Document:

EX-10.1

 EXHIBIT 10.1 

SECOND AMENDMENT dated as of September 28, 2015 (this “Second Amendment”), to the Credit Agreement
dated as of December 15, 2014 (as amended by that certain First Amendment dated as of March 31, 2015 and as it may be further amended, amended and restated, supplemented or otherwise modified from time to time, the
“Credit Agreement”), among Willbros Group, Inc., a Delaware corporation (the “Borrower”), the Guarantors from time to time party thereto, the Lenders from time to time party thereto, KKR Credit Advisors (US)
LLC, as Arranger (the “Arranger”), and JPMorgan Chase Bank, N.A., as Administrative Agent (in such capacity, the “Administrative Agent”). 

WHEREAS, the Loan Parties, the Administrative Agent and the Lenders are parties to the Credit Agreement, pursuant to which the Lenders made
Tranche B Loans to the Borrower. 
 WHEREAS, the Borrower has informed the Administrative Agent and the Lenders that the Borrower desires to
consummate the Professional Services Disposition (as defined herein), the Bemis Disposition (as defined herein) and the Other Designated Asset Dispositions (as defined herein). 

WHEREAS, in anticipation of such sale, the Borrower has requested that the Lenders agree to permit the Borrower to retain certain of the Net
Proceeds from the Professional Services Disposition and the Bemis Dispositions and restructure the call protection set forth in Section 2.06(f) of the Credit Agreement. 

WHEREAS, the Borrower has further requested that (a) the testing of the financial covenants set forth in Sections 6.15 and
6.16 of the Credit Agreement be further suspended during the Second Amendment Covenant Test Suspension Period (as defined herein) if the Professional Services Disposition Completion Date (as defined herein) does not occur on or prior to the
Professional Services Disposition Outside Date (as defined herein) and (b) certain financial covenant levels set forth in Sections 6.15 and 6.16 of the Credit Agreement be amended. 

WHEREAS, pursuant to, and in compliance with the requirements of, Section 10.01 of the Credit Agreement, each Lender is willing to
agree to the Borrower’s requests, in each case on the terms and subject to the conditions set forth herein. 
 NOW, THEREFORE, in
further consideration of the premises and mutual covenants contained herein, the parties hereto agree as follows: 
 SECTION 1. Defined
Terms. Capitalized terms used but not defined herein (including the recitals hereto) shall have the meanings assigned to such terms in the Credit Agreement. 

SECTION 2. Amendments to the Credit Agreement. As of the Second Amendment Effective Date (as defined below), the Credit Agreement is
hereby amended as follows: 

 (a) Subject to Section 3 of this Second Amendment, Section 1.01 of the
Credit Agreement is hereby amended by adding the following defined terms in appropriate alphabetical order: 

““Asset Sale Prepayment Premium” has the meaning set forth in Section 2.06(f)(ii).” 

““Bemis Disposition” the disposition of all or substantially all the assets of, or the Equity Interests
in, Bemis LLC, a Vermont limited liability company (and no other assets), provided that such disposition is consummated (a) in accordance with Section 6.04(h) and (b) without any recourse to the Borrower or any of its
Subsidiaries, other than customary purchase price adjustments, escrow arrangements and indemnities set forth in the definitive agreement for such disposition.” 

““Default Prepayment Premium” has the meaning set forth in Section 2.06(f)(iii).” 

““Designated Asset Dispositions” means the Professional Services Disposition, the Bemis Disposition and
the Other Designated Asset Dispositions.” 
 ““Designated Asset Disposition Outside Date” means
September 28, 2016.” 
 ““Insolvency Proceeding” has the meaning set forth in
Section 7.01(e).” 
 ““Other Designated Asset Dispositions” means each disposition
separately agreed to in writing by the Parent, the Administrative Agent and the Arranger as an “Other Designated Asset Disposition” for purposes of this Agreement, provided, in each case under clauses (a) and (b) above,
that such disposition is consummated (i) in accordance with Section 6.04(h) and (ii) without any recourse to the Borrower or any of its Subsidiaries, other than customary purchase price adjustments, escrow arrangements and
indemnities set forth in the definitive agreement for such disposition.” 
 ““Prepayment Premium”
has the meaning set forth in Section 2.06(f)(i).” 
 ““Professional Services Disposition
Completion Date” means the date on which the Professional Services Disposition is consummated.” 

““Professional Services Disposition Outside Date” means December 31, 2015.” 

““Professional Services Disposition” means the disposition of all or substantially all the assets
constituting the “Professional Services” segment of the Borrower and its Subsidiaries (excluding, at the option of the Borrower, the “Governmental Services” line of business otherwise included therein), whether such disposition
is by means of the disposition of such assets or of the Equity 

  
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Interests in one or more Subsidiaries that hold such assets (and no other assets), provided that such disposition is consummated (a) in accordance with Section 6.04(h) and
(b) without any recourse to the Borrower or any of its Subsidiaries, other than customary purchase price adjustments, escrow arrangements and indemnities set forth in the definitive agreement for such disposition.” 

““Repayment Fee” has the meaning set forth in Section 2.04(b).” 

““Repayment Fee Percentage” means 5.00%.” 

““Retained Net Proceeds” has the meaning set forth in Section 2.06(c)(i)(B)(4).” 

““Retained Net Proceeds Amount” means, at any time, (a) the Retained Net Proceeds at such time, but
not in excess of the Retained Net Proceeds Cap, less (b) the aggregate principal amount of Tranche B Loans prepaid pursuant to Section 2.06(b) after the Second Amendment Effective Date and prior to such time; provided
that, for the avoidance of doubt, “Retained Net Proceeds Amount” may not be less than zero.” 

““Retained Net Proceeds Cap” means, at any time, the sum of (a) $43,000,000 and (b) the total
amount of the premium and fees payable by the Borrower under this Agreement on account of the Professional Services Disposition or the Bemis Disposition, in each case, if such Designated Asset Disposition has been consummated prior to such
time.” 
 ““Second Amendment” means the Second Amendment dated as of September 28, 2015, to
this Agreement.” 
 ““Second Amendment Covenant Test Suspension Period” means the fiscal quarters
ending December 31, 2014, March 31, 2015, June 30, 2015, September 30, 2015, December 31, 2015, March 31, 2016 and June 30, 2016.” 

““Second Amendment Effective Date” means September 28, 2015.” 

(b) The definition of “Excluded Property” set forth in Section 1.01 of the Credit Agreement is hereby amended by
deleting the word “and” immediately after clause (f) thereof, adding the word “and” immediately after clause (g) thereof and adding the following new clause (h) immediately after clause (g) thereof: 

“(h) any cash and Cash Equivalents subject to a Lien referred to in clause (c), (d) or
(f) of the definition of Excepted Liens or Section 6.01(g), 6.01(k) or 6.01(l), in each case, to the extent that a grant of a Lien thereon pursuant to the Loan Documents shall constitute or result in a breach or
termination pursuant to the terms of, or a default under, any agreement to which any Loan Party is a party governing or relating to such Lien”. 

  
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 (c) Subject to Section 3 of this Second Amendment, Section 1.01 of the
Credit Agreement is hereby amended by amending and restating each of the following defined terms in its entirety as follows: 

““Makewhole Amount” means, in respect of the Tranche B Loans of any Lender being prepaid (or deemed
prepaid under Section 2.06(f)(iii)) or subject to a Repricing Amendment on any date, an amount equal to the present value as of such date of all interest payments that would have been made in respect of the principal of such Tranche B
Loans from the date of such prepayment (or deemed prepayment date) or the effective date of such Repricing Amendment to but excluding (a) in the case of any prepayment pursuant to Section 2.06(b) or 2.06(c)(ii) made on or
after June 15, 2018, June 15, 2019 and (b) in the case of any other prepayment or a Repricing Amendment, the Tranche B Maturity Date at a rate per annum equal to the sum of (i) 9.75% plus (ii) the greater of
(x) 1.25% and (y) the Eurodollar Rate (assuming an Interest Period of three months) in effect on the date of such prepayment (or deemed prepayment date) or the effective date of such Repricing Amendment (in each case, computed on the basis
of actual days elapsed over a year of 360 days and using a discount rate equal to the Treasury Rate as of such prepayment or effective date plus 50 basis points).” 

““Obligations” means all advances to, and debts, liabilities, obligations, covenants and duties of, any
Loan Party arising under any Loan Document (including any Prepayment Premium, any Asset Sale Prepayment Premium or the Default Prepayment Premium applicable pursuant hereto) or with respect to any Hedging Arrangement to which a Hedging Counterparty
is a party, whether direct or indirect (including those acquired by assumption), absolute or contingent, due or to become due, now existing or hereafter arising and including principal, interest, fees and indemnities (including interest and fees
that accrue after the commencement by or against any Loan Party or any Affiliate thereof of any proceeding under any Debtor Relief Laws naming such Person as the debtor in such proceeding, regardless of whether such interest and fees are allowed
claims in such proceeding); provided that, for purposes of determining any Obligations of any Guarantor under Article VIII of this Agreement and the Security Agreement, the definition of “Obligations” shall not create any
guarantee by any Guarantor of any Excluded Swap Obligations of such Guarantor.” 
 (d) The definition of “Permitted ABL Debt”
set forth in Section 1.01 of the Credit Agreement is hereby amended by replacing each reference in clause (a) thereof to “the First Amendment Effective Date” with a reference to “the Second Amendment Effective
Date”. 
 (e) Subject to Section 3 of this Second Amendment, Section 2.04 of the Credit Agreement is hereby
amended and restated in its entirety as follows: 
 “2.04 Fees. 

  
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 (a) The Borrower agrees to pay to the Administrative Agent the fees as separately
agreed upon by the Borrower and the Administrative Agent in the Agent Fee Letter. 
 (b) The Borrower shall pay to the
Administrative Agent, for the ratable account of each Lender, on the Tranche B Maturity Date a fee in the amount of 5.00% of the aggregate principal amount of the Tranche B Loans outstanding on the Tranche B Maturity Date (the “Repayment
Fee”). Once paid, the Repayment Fee shall not be refundable under any circumstances. The payment of (or the obligation to pay) the Repayment Fee does not reduce or modify any other fees or expenses owed to the Administrative Agent or any
other Secured Parties, for its or their own account, pursuant to any other fee arrangement or any other Loan Document and shall be in addition to, and not creditable against, any other fee, cost or expense payable under this Agreement or any other
Loan Document. The Repayment Fee shall be deemed to be payable in consideration of the agreements made by the Lenders in connection with this Agreement and the Second Amendment, and the Loan Parties agree that it is reasonable under the
circumstances currently existing. The Loan Parties expressly agree that (i) the Repayment Fee is reasonable and is the product of an arm’s length transaction between sophisticated business people, ably represented by counsel, (ii) the
Repayment Fee shall be payable notwithstanding the then prevailing market rates at the time payment is made, (iii) there has been a course of conduct between Lenders and the Loan Parties giving specific consideration in this transaction and the
transactions contemplated by the Second Amendment for such agreement to pay the Repayment Fee, and (iv) the Loan Parties shall be estopped hereafter from claiming differently than as agreed to in this Section 2.04(b).” 

(f) Subject to Section 3 of this Second Amendment, Section 2.06(c)(i)(B) of the Credit Agreement is hereby amended by
adding the following language as a new subclause (4), immediately following subclause (3) therein: 
 “(4) In the
case of any Net Proceeds received by the Borrower and its Subsidiaries in respect of the Professional Services Disposition and/or the Bemis Disposition, an additional amount thereof up to the Retained Net Proceeds Cap in the aggregate (the
“Retained Net Proceeds”), shall not, unless otherwise agreed by the Borrower, be subject to the requirements set forth in Section 2.06(c)(i)(A) and may be retained by the Borrower (and, prior to its permitted use as set
forth below, shall be held by the Loan Parties solely in one or more deposit accounts subject to a deposit account control agreement for the benefit of the Administrative Agent providing for a perfected Lien in favor of the Administrative Agent),
and be used by the Borrower solely for (I) making voluntary prepayments of the Tranche B Loans pursuant to Section 2.06(b) and paying any premiums or fees in connection therewith, provided that any such voluntary prepayment
shall be accompanied by a certificate signed by a Responsible Officer of the Borrower setting forth the calculation of the Retained Net Proceeds Amount as of such time of prepayment both before and after giving effect to such prepayment,
(II) working capital in the ordinary course of business 

  
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and other general corporate purposes in the ordinary course of business (including as the cash collateral component of the “borrowing base” under the ABL Documents or as cash collateral
to support obligations of the Borrower and its Subsidiaries in respect of letters of credit, surety bonds, performance bonds and similar obligations), in each case, excluding any Investments (other than intercompany loans and advances), Acquisitions
and Restricted Payments, whether or not otherwise permitted hereunder, or (III) repayment or prepayment of the Permitted ABL Debt, in each case, to the extent otherwise permitted hereunder; provided further that the Borrower shall
provide to the Administrative Agent, within five (5) Business Days of written request by the Administrative Agent or the Required Lenders, a certificate signed by a Responsible Officer of the Borrower setting forth the calculation of the
Retained Net Proceeds Amount as of such time (as well as reasonable backup documentation in support of such calculation).” 
 (g)
Subject to Section 3 of this Second Amendment, Section 2.06(f) of the Credit Agreement is hereby amended and restated in its entirety as follows: 

“(f) Call Protection. 

(i) In the event that, at any time prior to the Tranche B Maturity Date, the Loan Parties shall (i) prepay any Tranche B
Loans (other than pursuant to Section 2.06(c)(i) (solely to the extent such prepayment is made on account of one or more Designated Asset Dispositions permitted pursuant to Section 6.04(h) and does not result in the aggregate
principal amount of the Tranche B Loans outstanding after giving effect to such prepayment to be less than $88,000,000), Section 2.06(c)(iv) or, for the avoidance of doubt, Section 2.05(a) or 2.05(b)) or
(ii) effect any Repricing Amendment (including, for the avoidance of doubt, pursuant to Section 2.18), and, in each case, no Event of Default shall have occurred and be continuing immediately after giving effect to such prepayment,
the Borrower shall pay to the Administrative Agent, for the ratable account of each Lender, (A) in the case of clause (i) above, a prepayment premium equal to the Makewhole Amount plus the Repayment Fee Percentage, in each case, with
respect to the aggregate principal amount of the Tranche B Loans so prepaid, provided that, notwithstanding the foregoing, in the case of any prepayment of Tranche B Loans under Section 2.06(b) made after the Second Amendment
Effective Date (but only so long as (1) the aggregate principal amount of Tranche B Loans so prepaid shall not exceed the lesser of the Retained Net Proceeds and the Retained Net Proceeds Cap and (2) the aggregate principal amount of the
Tranche B Loans outstanding after giving effect to such prepayment under Section 2.06(b) shall not be less than $88,000,000), the prepayment premium shall equal to 2.00% of the aggregate principal amount of the Tranche B Loans so prepaid, and
(B) in the case of clause (ii) above, a fee equal to the Makewhole Amount plus the Repayment Fee Percentage, in each case, with respect to the aggregate principal amount of the Tranche B Loans subject to such Repricing Amendment (such
premium or fee referred to in clauses (A) and (B), the “Prepayment Premium”). 

  
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 (ii) With respect to any prepayments of Tranche B Loans pursuant to
Section 2.06(c)(i) solely to the extent such prepayment is made on account of one or more Designated Asset Dispositions permitted by Section 6.04(h), and, in each case, such prepayment does not result in the aggregate
principal amount of Tranche B Loans outstanding after giving effect to such prepayment to be less than $88,000,000 and does not occur at time when an Event of Default shall have occurred and be continuing immediately after giving effect to such
prepayment, the Borrower shall pay to the Administrative Agent, for the ratable account of each Lender, a prepayment premium equal to 2.00% of the aggregate principal amount of the Tranche B Loans so prepaid (such premium, the “Asset Sale
Prepayment Premium”). 
 (iii) Without limiting the generality of the foregoing and notwithstanding anything to the
contrary in this Agreement or any other Loan Document, it is understood and agreed that if (x) an Event of Default shall have occurred and be continuing immediately after giving effect to any prepayment of Tranche B Loans, whether in whole or
in part, made after the Second Amendment Effective Date or (y) the Tranche B Loans are accelerated (including, without limitation, as the result of the occurrence of any Event of Default or the commencement of any Insolvency Proceeding, whether
pursuant to Section 7.02 or 7.03, by operation of law or otherwise), a fee equal to the Makewhole Amount plus the Repayment Fee Percentage, in each case, with respect to the aggregate principal amount of the Tranche B Loans
subject to such prepayment (determined in the case of acceleration, as of the date of acceleration as if the aggregate principal amount of Tranche B Loans then outstanding were voluntarily prepaid on such date under Section 2.06(b) (but,
in the case of any portion of such fee attributable to the definition of “Makewhole Amount”, determined disregarding any interest payments hereunder that are actually made by the Borrower after such date of acceleration), will also be due
and payable and, in the case of acceleration, will be treated and deemed as though the Tranche B Loans were voluntary prepaid as of such date under Section 2.06(b) and shall constitute part of the Obligations for all purposes hereof (the
prepayment fee payable under this clause (f)(iii), the “Default Prepayment Premium”), it being understood and agreed that the Default Prepayment Premium shall be without duplication of any amounts payable under clause (f)(i) or
(f)(ii) above. The Default Prepayment Premium payable in accordance with the immediately preceding sentence shall be presumed to be the liquidated damages sustained by each Lender as a result of the early termination, and the Loan Parties agree that
it is reasonable under the circumstances currently existing, and will be payable notwithstanding the satisfaction, release, payment, restructuring, reorganization, replacement, reinstatement, defeasance or compromise of any of the Tranche B Loans in
any Insolvency Proceeding, any foreclosure (whether by power of judicial proceeding or otherwise) or deed in lieu of foreclosure or the making of a distribution of any kind in any Insolvency Proceeding. THE LOAN PARTIES EXPRESSLY WAIVE THE
PROVISIONS OF ANY PRESENT OR FUTURE STATUTE OR LAW THAT PROHIBITS OR MAY PROHIBIT THE COLLECTION OF THE DEFAULT PREPAYMENT PREMIUM IN CONNECTION WITH ANY SUCH 

  
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ACCELERATION. The Loan Parties expressly agree that (A) the Default Prepayment Premium is reasonable and is the product of an arm’s length transaction between sophisticated business
people, ably represented by counsel, (B) the Default Prepayment Premium shall be payable notwithstanding the then prevailing market rates at the time payment is made, (C) there has been a course of conduct between Lenders and the Loan
Parties giving specific consideration in this transaction and the transactions contemplated by the Second Amendment for such agreement to pay the Default Prepayment Premium, and (D) the Loan Parties shall be estopped hereafter from claiming
differently than as agreed to in this Section 2.06(f)(iii). 
 (iv) For the avoidance of doubt and
notwithstanding anything to the contrary herein or in any other Loan Document, the proceeds of any Asset Disposition (including any Designated Asset Disposition) shall not be included in the definition of Consolidated EBITDA, Consolidated Net Income
or Excess Cash Flow for any purposes hereunder or any other Loan Document.” 
 (h) Section 6.01(g) of the Credit Agreement
is hereby amended and restated in its entirety as follows: 
 “(g) Liens securing Debt permitted under Section 6.02(i) or
other obligations relating to the payment of insurance premiums or deductibles; provided that such Liens do not extend to any assets of the Borrower or any of its Subsidiaries other than assets of the type customarily subject to such Liens
(including rights under the applicable insurance policies and cash and Cash Equivalents);”. 
 (i) Subject to Section 3 of
this Second Amendment, Section 6.04(c) of the Credit Agreement is hereby amended and restated in its entirety as follows: 

“(c) [Reserved];”. 

(j) Subject to Section 3 of this Second Amendment, Section 6.04(h) of the Credit Agreement is hereby amended and
restated in its entirety as follows: 
 “(h) any other Asset Dispositions; provided that (i) each such Asset Disposition is
for fair market value, (ii) at least 75% of the consideration for each such Asset Disposition is cash or Cash Equivalents, (iii) no Default or Event of Default has occurred and is continuing after giving effect to such Asset Disposition,
and (iv) each such Asset Disposition consummated after the Second Amendment Effective Date (A) is a Designated Asset Disposition and (B) is consummated on or prior to the Designated Asset Disposition Outside Date; provided
further that, for the avoidance of doubt, upon the completion of all the Designated Asset Dispositions after the Second Amendment Effective Date, no other Asset Sales shall be permitted under this clause (h)”. 

(k) Subject to Section 3 of this Second Amendment, Section 6.15 of the Credit Agreement is hereby amended and restated
in its entirety as follows: 

  
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 “6.15 Minimum Interest Coverage Ratio. Permit the Interest Coverage
Ratio as of the last day of any fiscal quarter, commencing with the fiscal quarter ending December 31, 2014, to be less than the ratio set forth below with respect to such fiscal quarter: 

 

			
	 Fiscal Quarter
	  	Minimum Interest Coverage Ratio
	 Fiscal quarters ending December 31, 2014, March 31, 2015 and June 30, 2015
	  	2.00 to 1.00
	 Fiscal quarters ending September 30, 2015 and December 31, 2015
	  	2.50 to 1.00
	 Fiscal quarter ending March 31, 2016
	  	2.75 to 1.00
	 Fiscal quarter ending June 30, 2016
	  	1.00 to 1.00
	 Fiscal quarter ending September 30, 2016
	  	2.00 to 1.00
	 Fiscal quarter ending December 31, 2016
	  	2.00 to 1.00
	 Fiscal quarters ending March 31, 2017 and thereafter
	  	3.50 to 1.00

 (l) Subject to Section 3 of this Second Agreement, Section 6.16 of the Credit
Agreement is hereby and restated in its entirety as follows: 
 “6.16 Maximum Total Leverage Ratio. Permit the
Total Leverage Ratio as of the last day of any fiscal quarter, commencing with the fiscal quarter ending December 31, 2014, to exceed the ratio set forth below with respect to such fiscal quarter: 

 

			
	 Fiscal Quarter
	  	Maximum Total Leverage Ratio
	 Fiscal quarters ending December 31, 2014, March 31, 2015 and June 30, 2015
	  	  4.50 to 1.00
	 Fiscal quarter ending September 30, 2015
	  	  4.00 to 1.00
	 Fiscal quarter ending December 31, 2015
	  	  3.50 to 1.00
	 Fiscal quarter ending March 31, 2016
	  	  3.25 to 1.00
	 Fiscal quarter ending June 30, 2016
	  	10.00 to 1.00
	 Fiscal quarter ending September 30, 2016
	  	  4.50 to 1.00
	 Fiscal quarter ending December 31, 2016
	  	  4.50 to 1.00
	 Fiscal quarters ending March 31, 2017 and thereafter
	  	  2.75 to 1.00

  
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 (m) Article VI of the Credit Agreement is hereby amended by adding the following section
as new Section 6.20, immediately following Section 6.19 therein: 
 “6.20. Extended Suspension of Testing of
Financial Covenants During the Second Amendment Covenant Test Suspension Period. Notwithstanding anything in Sections 6.15, 6.16 and 6.19 to the contrary, during the Second Amendment Covenant Test Suspension Period, the Interest Coverage
Ratio and the Total Leverage Ratio shall not be tested to determine compliance with Section 6.15 or 6.16, respectively, and any failure by the Loan Parties to comply with the Interest Coverage Ratio or the Total Leverage Ratio as set forth in
such Sections during the Second Amendment Covenant Test Suspension Period shall not be deemed to be or result in a Default or an Event of Default; provided that the financial covenants set forth in Sections 6.15 and 6.16 shall be applicable for all
other purposes tested or referenced under this Agreement as if in effect during the Second Amendment Covenant Test Suspension Period; provided further that if the Professional Services Disposition Completion Date occurs on or prior to the
Professional Services Disposition Outside Date, this Section 6.20 (other than this ultimate proviso of this Section 6.20) shall no longer be of any force or effect (it being understood that nothing in this ultimate proviso shall affect
Section 6.19, which shall continue in full force and effect), and compliance with Sections 6.15 and 6.16 shall be subject to and tested pursuant to the terms of Section 6.19.” 

(n) Section 7.01(e) of the Credit Agreement is hereby amended to insert the following words at the end of such section immediately
prior to the “;” at the end of such Section: “(any of the foregoing clauses (a) through (e), an “Insolvency Proceeding”). 

(o) Section 7.02(a) of the Credit Agreement is hereby amended and restated in its entirety as follows: 

“(a) the Administrative Agent shall, at the request, or may, with the consent, of the Majority Lenders, by notice to the Borrower, declare
all principal, interest, fees, reimbursements, indemnifications, and all other amounts payable under this Agreement and the other Loan Documents (including the Default Prepayment Premium) to be forthwith due and payable, whereupon all such amounts
shall 

  
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become and be forthwith due and payable in full, without notice of intent to demand, demand, presentment for payment, notice of nonpayment, protest, notice of protest, grace, notice of dishonor,
notice of intent to accelerate, notice of acceleration, and all other notices, all of which are hereby expressly waived by the Borrower; and”. 

(p) Section 7.03(a)(ii) of the Credit Agreement is hereby amended and restated in its entirety as follows: 

(ii) all principal, interest, fees, reimbursements, indemnifications, and all other amounts payable under this Agreement and the other Loan
Documents (including the Default Prepayment Premium) shall become and be forthwith due and payable in full, without notice of intent to demand, demand, presentment for payment, notice of nonpayment, protest, notice of protest, grace, notice of
dishonor, notice of intent to accelerate, notice of acceleration, and all other notices, all of which are hereby expressly waived by the Borrower; and”. 

(q) Section 10.06(g) of the Credit Agreement is hereby amended and restated in its entirety as follows: 

“(g) [Reserved].” 

SECTION 3. Cessation of Effectiveness of Certain Amendments. Notwithstanding anything to the contrary set forth herein or in any other
Loan Document, if the Professional Services Disposition Completion Date does not occur on or prior to the Professional Services Disposition Outside Date, the amendments set forth in Sections 2 of this Second Amendment (other than Sections
2(b), 2(d), 2(h), 2(m), 2(n) and 2(q)) shall be deemed to be null and void and of no further force and effect, in each case, as of the Professional Services Disposition Outside Date, and the terms of the
Sections of the Credit Agreement there were subject to such amendments set forth in Section 2 of this Second Amendment shall automatically be reinstated to be identical to such terms as in effect immediately prior to the Second Amendment
Effective Date. 
 SECTION 4. Amendment to the Intercreditor Agreement. Each Lender hereby (a) authorizes and directs the
Administrative Agent to execute and deliver an amendment to the Intercreditor Agreement in the form of Exhibit A hereto, in each case, on behalf of such Lender and without any further consent, authorization or other action by such Lender, and
(b) agrees that, upon the execution and delivery thereof, such Lender will be bound by the provisions of the Intercreditor Agreement, as so amended, as if it were a signatory thereto and will take no actions contrary to the provisions of the
Intercreditor Agreement, as so amended. 
 SECTION 5. Amendment to ABL Credit Agreement. Each Lender hereby agrees that on the Second
Amendment Effective Date the ABL Credit Agreement shall be amended as set forth on Exhibit B hereto and that, notwithstanding anything to the contrary in the Credit Agreement or any other Loan Document, such amendment shall be permitted under the
Credit Agreement and the other Loan Documents. 

  
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 SECTION 6. Conditions to Effectiveness of Second Amendment. This Second Amendment shall
become effective on the first date (the “Second Amendment Effective Date”) on which: 
 (a) The Arranger and the
Administrative Agent (or their respective counsels) shall have received duly executed counterparts hereof that, when taken together, bear the signatures of the Borrower and each Lender; 

(b) The Arranger and the Administrative Agent (or their respective counsels) shall have received duly executed counterparts of an amendment to
the Intercreditor Agreement, in the form of Exhibit A hereto, that, when taken together, bear the signatures of the ABL Representative and each Loan Party. 

(c) The Arranger and the Administrative Agent (or their respective counsels) shall have received certificates from the appropriate
Governmental Authority certifying as to the good standing of each Loan Party in the jurisdiction of its incorporation or formation; and 

(d) The Arranger and the Administrative Agent (or their respective counsels) shall have received a certificate dated the Second Amendment
Effective Date from a Responsible Officer of the Borrower certifying that: 
 (i) The Borrower and its Subsidiaries, taken as
a whole, after giving effect to this Second Amendment, are Solvent as of the Second Amendment Effective Date; 
 (ii) No
Default or Event of Default has occurred and is continuing as of the Second Amendment Effective Date; 
 (iii) All
representations and warranties of the Loan Parties set forth in Article IV of the Credit Agreement are true and correct as of the Second Amendment Effective Date in all material respects (except that to the extent any representation and
warranty is qualified as to “Material Adverse Effect” or otherwise as to “materiality”, such representation and warranty shall be true and correct in all respects as of the Second Amendment Effective Date), except to the extent
that any such representation and warranty relates solely to an earlier date, in which case such representation and warranty was true and correct in all material respects (except that to the extent any representation and warranty is qualified as to
“Material Adverse Effect” or otherwise as to “materiality”, such representation and warranty was true and correct in all respects) as of such earlier date; and 

(iv) The Organizational Documents of each Loan Party, including all amendments thereto, delivered to the Administrative Agent
on December 15, 2014, pursuant to the Credit Agreement remain in full force and effect as of the Second Amendment Effective Date and have not been amended, waived or supplemented since such date and to the Second Amendment Effective Date.

 SECTION 7. Representations and Warranties. Each Loan Party represents and warrants as of the Second Amendment Effective Date as
follows: 

  
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 (a) Authority Etc. Each of the Loan Parties has the requisite organizational power and
authority to execute, deliver and perform this Second Amendment. The execution, delivery and performance by each Loan Party of this Second Amendment (i) have been duly authorized by all necessary organizational action on the part of such Loan
Party, (ii) do not and will not (A) contravene the terms of such Loan Party’s Organizational Documents, (B) violate any Legal Requirement or (C) conflict with or result in any breach or contravention of, or the creation of
any Lien (other than any Lien created under the Loan Documents and Liens created under the ABL Documents) under, (1) the provisions of any indenture, instrument or agreement to which such Loan Party is a party or by which it or its property is
bound or (2) any order injunction, writ or decree of any Governmental Authority or any arbitral award to which such Loan Party or its property is subject, except, in the case of clauses (ii)(B) and (ii)(C) above, to the extent any of the
foregoing could not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect. No authorization, approval, consent, exemption or other action by, or notice to or filing with, and Governmental Authority is necessary
or required on the part of any Loan Party in connection with the execution, delivery and performance by any Loan Party of this Second Amendment, except (I) as such have been obtained or made and are in full force and effect, and
(II) actions by, and notices to or filings with, Governmental Authorities (including the SEC) that may be required in the ordinary course of business from time to time or that may be required to comply with the express requirements of the Loan
Documents. 
 (b) Enforceability. This Second Amendment has been duly executed and delivered by each Loan Party. This Second
Amendment constitutes a legal, valid and binding obligation of each Loan Party, enforceable against such Loan Party in accordance with its terms, except as such enforceability may be limited by any applicable bankruptcy, insolvency, reorganization,
fraudulent conveyance, moratorium or similar law affecting creditors’ rights generally or general principles of equity. 
 (c)
Representations and Warranties. After giving effect to this Second Amendment, the representations and warranties contained in each Loan Document are true and correct in all material respects (except that such materiality qualifier shall be
not applicable to any representations and warranties that already are qualified or modified by the materiality in the text thereof) on and as of the date hereof, as though made on and as of the date hereof (except to the extent that such
representations and warranties relate solely to an earlier date, in which case, such representations and warranties shall be true and correct in all material respects (except that such materiality qualifier shall not be applicable to any
representations and warranties that already are qualified or modified by materiality in the text thereof) as of such earlier date). 
 (d)
No Default. No Default or Event of Default has occurred and is continuing as of the date hereof. 
 SECTION 8. Reaffirmation and
Ratification. The Loan Parties hereby: 
 (a) acknowledge and agree that the Liens and security interests created under the Security
Agreement and the other Security Documents in favor of the Administrative Agent for the benefit of the Lenders and securing payment of all “Obligations” (including, without limitation, all prior loans or advances made to the Borrower by
the Lenders) outstanding pursuant to the Credit Agreement shall remain in full force and effect with respect to the Obligations and are hereby and thereby reaffirmed, 

  
 13 

 (b) acknowledge and reaffirm their respective obligations as set forth in each Loan Document (as
amended or otherwise modified by this Second Amendment), including, without limitations, all Obligations under the Credit Agreement and the other Loan Documents (as amended or otherwise modified by this Second Amendment), 

(c) agree to continue to comply with, and be subject to, all of the terms, provisions, conditions, covenants, agreements and obligations
applicable to them set forth in each Loan Document (as amended or otherwise modified by this Second Amendment), which remain in full force and effect, and 

(d) confirm, ratify and reaffirm that (i) the guarantees and indemnities given by them pursuant to the Credit Agreement and/or any other
Loan Documents continue in full force and effect, following and notwithstanding the amendments thereto pursuant to this Second Amendment, and (ii) the security interest granted to Administrative Agent, for the benefit of the Lenders, pursuant
to the Loan Documents in all of their right, title, and interest in all then existing and thereafter acquired or arising Collateral in order to secure prompt payment and performance of the Obligations, is continuing and is and shall remain
unimpaired and continue to constitute a first priority security interest (subject to Permitted Liens) in favor of the Administrative Agent, for the benefit of the Lenders, with the same force, effect and priority in effect immediately prior to
entering into this Second Amendment. 
 SECTION 9. Release. Each Loan Party hereby remises, releases, acquits, satisfies and forever
discharges the Arranger, the Administrative Agent, the Lenders and their respective agents, employees, officers, directors, predecessors, attorneys and all others acting or purporting to act on behalf of or at the direction of the Arranger, the
Administrative Agent or the Lenders (“Releasees”), of and from any and all manner of actions, causes of action, suits, damages, claims and demands, in each case, that as of the date hereof are known or reasonably should be known to
such Loan Party, in law or in equity, which such Loan Party ever had, now has or, to the extent arising from or in connection with any act, omission or state of facts taken or existing on or prior to the date hereof, may have after the date hereof
against the Releasees, for, upon or by reason of any matter, cause or thing whatsoever through the date hereof (it being understood that nothing in this sentence shall release or otherwise affect the covenants of the Releasees under the Credit
Agreement and the other Loan Documents, in each case, after the Second Amendment Effective Date). Without limiting the generality of the foregoing, each Loan Party hereby waives and affirmatively agrees not to allege or otherwise pursue any actions,
causes of action, suits, damages, claims and demands that it shall or may have as of the date hereof against any Releasees in connection with the Credit Agreement or the other Loan Documents, including, but not limited to, the rights to contest
(a) the right of the Arranger, the Administrative Agent and each Lender to exercise its rights and remedies described in the Credit Agreement, (b) any provision of the Credit Agreement or the other Loan Documents or (c) any conduct of
the Arranger, the Administrative Agent, the Lenders or other Releasees relating to or arising out of the Credit Agreement or the other Loan Documents on or prior to the date hereof. 

  
 14 

 SECTION 10. Estoppel. To induce the Arranger, the Administrative Agent and the Lenders to
enter into this Second Amendment, each Loan Party hereby acknowledges and agrees that, after giving effect to this Second Amendment, as of the date hereof, to the knowledge of any Loan Party, there exists no right of offset, defense, counterclaim or
objection in favor of any Loan Party as against the Arranger, the Administrative Agent or any Lender with respect to the Obligations. 

SECTION 11. Effects on Loan Documents. Except as specifically amended herein or pursuant hereto, all provisions of the Credit Agreement
and the other Loan Documents shall continue to be in full force and effect and are hereby in all respects ratified and confirmed. Except as otherwise expressly provided herein, the execution, delivery and effectiveness of this Second Amendment shall
not operate as a waiver of any right, power or remedy of any Lender, the Arranger or the Administrative Agent under any of the Loan Documents or constitute a waiver or consent of any provision of the Loan Documents or to any further or future action
on the part of the Loan Parties that would require a waiver or consent of the Majority Lenders or the Administrative Agent. 
 SECTION 12.
GOVERNING LAW; WAIVER OF JURY TRIAL. THIS SECOND AMENDMENT AND THE RIGHTS AND OBLIGATIONS OF THE PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND BE GOVERNED BY THE LAW OF THE STATE OF NEW YORK. EACH PARTY HERETO HEREBY AGREES AS
SET FORTH FURTHER IN SECTION 10.13 OF THE CREDIT AGREEMENT AS IF SUCH SECTION WAS SET FORTH IN FULL HEREIN, MUTATIS MUTANDIS. 

SECTION 13. Loan Document. This Second Amendment shall constitute a “Loan Document” for all purposes of the Credit Agreement
and the other Loan Documents. From and after the Second Amendment Effective Date, the terms “Agreement”, “this Agreement”, “herein”, “hereafter”, “hereto”, “hereof” and words of similar
import, as used in the Credit Agreement and the other Loan Documents, shall refer to the Credit Agreement as amended hereby. 
 SECTION 14.
Execution in Counterparts. This Second Amendment may be executed in counterparts (and by different parties hereto in different counterparts), including by means of facsimile or electronic transmission, each of which when so executed and
delivered shall be an original, but all of which shall together constitute one and the same instrument. 
 [signature pages to follow]

  
 15 

 IN WITNESS WHEREOF, the parties hereto have caused this Second Amendment to be duly executed and
delivered by their respective proper and duly authorized officers as of the day and year first above written. 
  

			
	WILLBROS GROUP, INC.
		
	By:	 	/s/ Richard W. Russler
	Name:	 	Richard W. Russler
	Title:	 	Vice President & Treasurer

 Signature Page to Second Amendment 

 
			
	 JPMORGAN CHASE BANK, N.A.,
 as
Administrative Agent

		
	By:	 	/s/ Stephanie Dickens
	Name:	 	Stephanie Dickens
	Title:	 	Authorized Officer

 Signature Page to Second Amendment 

 ACKNOWLEDGED AND AGREED BY: 

WILLBROS UNITED STATES HOLDINGS, INC. 
 WILLBROS GOVERNMENT
SERVICES (U.S.), LLC 
 WILLBROS CONSTRUCTION (U.S.), LLC 

WILLBROS ENGINEERS (U.S.), LLC 
 WILLBROS ENGINEERING CALIFORNIA
(U.S.), INC. 
 WILLBROS MIDSTREAM SERVICES (U.S.), LLC 

WILLBROS PROJECT SERVICES (U.S.), LLC 
 WILLBROS DOWNSTREAM, LLC

 WILLBROS WEST COAST SERVICES, INC. 
 CONSTRUCTION TANK
SERVICES, L.L.C. 
 WILLBROS UTILITY T&D HOLDINGS, LLC 

WILLBROS T&D SERVICES, LLC 
 CHAPMAN CONSTRUCTION MANAGEMENT
CO., INC. 
 CHAPMAN CONSTRUCTION CO., L.P. 
 WILLBROS UTILITY
T&D GROUP COMMON PAYMASTER, LLC 
 BEMIS, LLC 
 WILLBROS
UTILITY T&D OF MASSACHUSETTS, LLC 
 WILLBROS UTILITY T&D OF NEW YORK, LLC 

LINEAL INDUSTRIES, INC. 
 SKIBECK PIPELINE COMPANY, INC. 

TRAFFORD CORPORATION 

			
		
	By:	 	/s/ Richard W. Russler
	Name:	 	Richard W. Russler
	Title:	 	Vice President & Treasurer

 Signature Page to Second Amendment 

 
			
	 KKR LENDING PARTNERS II L.P.,
 as a
Lender

		
	By:	 	/s/ Jeffrey M. Smith
	Name:	 	Jeffrey M. Smith
	Title:	 	Authorized Signatory
	
	 CORPORATE CAPITAL TRUST, INC.,
 as a
Lender

		
	By:	 	/s/ Jeffrey M. Smith
	Name:	 	Jeffrey M. Smith
	Title:	 	Authorized Signatory
	
	 KKR LENDING PARTNERS FUNDING LLC,

as a Lender

		
	By:	 	/s/ Jeffrey M. Smith
	Name:	 	Jeffrey M. Smith
	Title:	 	Authorized Signatory
	
	 KKR-VRS CREDIT PARTNERS L.P.,
 as a
Lender

		
	By:	 	/s/ Jeffrey M. Smith
	Name:	 	Jeffrey M. Smith
	Title:	 	Authorized Signatory
	
	 KKR LENDING PARTNERS FUNDING III LLC,

as a Lender

		
	By:	 	/s/ Jeffrey M. Smith
	Name:	 	Jeffrey M. Smith
	Title:	 	Authorized Signatory
	
	 KKR CREDIT SELECT FUNDING LLC,
 as a
Lender

		
	By:	 	/s/ Jeffrey M. Smith
	Name:	 	Jeffrey M. Smith
	Title:	 	Authorized Signatory

 Signature Page to Second Amendment 

  

			
	 LINCOLN INVESTMENT SOLUTIONS, INC.,

as a Lender

		
	By:	 	/s/ Jeffrey M. Smith
	Name:	 	Jeffrey M. Smith
	Title:	 	Authorized Signatory
	
	 KKR CREDIT ADVISORS (US) LLC,
 as
Arranger

		
	By:	 	/s/ Jeffrey M. Smith
	Name:	 	Jeffrey M. Smith
	Title:	 	Authorized Signatory

 Signature Page to Second Amendment 

 EXHIBIT A 

FIRST AMENDMENT dated as of September 28, 2015 (this “Agreement”), to the Intercreditor Agreement dated
as of August 7, 2013 (as modified by the Notice of Refinancing and Reaffirmation of Intercreditor Agreement dated as of December 15, 2014, the “Intercreditor Agreement”), among Bank of America, N.A., as Agent for the ABL
Secured Parties (in such capacity, the “ABL Representative”), JPMorgan Chase Bank, as Administrative Agent for the Term Loan Secured Parties (in such capacity, the “Term Loan Representative”), and the Grantors party
thereto. 
 WHEREAS, pursuant to the Fourth Amendment to Loan, Security and Guaranty Agreement dated as of the date hereof (the “ABL
Fourth Amendment”), (a) the Existing ABL Agreement has been modified to, among other things, include Eligible Pledged Cash (as defined in the Existing ABL Agreement) in the Canadian Borrowing Base and the U.S. Borrowing Base (in each
case, as defined in the Existing ABL Agreement) and (b) the Lenders under the Existing ABL Agreement have authorized the ABL Representative to enter into this Agreement. 

WHEREAS, pursuant to the Second Amendment dated as of the date hereof to the Term Loan Agreement (the “Term Second
Amendment”), the Lenders under the Term Loan Agreement have authorized the Term Loan Representative to enter into this Agreement. 

WHEREAS, the ABL Representative, the Term Loan Representative and the Grantors desire to amend the Intercreditor Agreement as set forth below.

 NOW THEREFORE, in consideration of the mutual agreements herein contained and other good and valuable consideration, the sufficiency and
receipt of which are hereby acknowledged, the parties hereto agree as follows: 
 SECTION 1. Defined Terms. Capitalized terms used
but not defined herein (including the recitals hereto) shall have the meanings assigned to them in the Intercreditor Agreement. 
 SECTION
2. Amendments to the Intercreditor Agreement. 
 (a) Section 1.2 of the Intercreditor Agreement is hereby amended as follows:

 (i) Clauses (f) and (g) of the definition of “ABL Facility First Priority Collateral” are hereby
amended and restated in their entirety as follows: 
 “(f) (i) all Deposit Accounts constituting Eligible Pledged
Cash Accounts (including all cash, cash equivalents, financial assets, negotiable instruments and other evidence of payment, and other funds on deposit therein or credited thereto), provided that the aggregate amount of the cash, cash
equivalents, financial assets, negotiable instruments and other evidences of payment, Investment Property and other funds or other property on deposit or held in or credited to all the Eligible Pledged Cash Accounts does not exceed at any one time
the sum of (A) $43,000,000 (it being agreed that the provisions of Section 4.1(d) shall not apply to this clause (A)), (B) the Proceeds of the ABL Facility First Priority Collateral received by the Grantors and (C) interest and
other profits thereon, and (ii) all other Deposit Accounts (other than Deposit Accounts that contain only the Proceeds of the Term Loan Priority Collateral) with any bank or other financial institution (including all cash, cash equivalents,
financial assets, negotiable instruments and other 

 
evidence of payment, and other funds on deposit therein or credited thereto, other than, in each case, to the extent constituting the identifiable Proceeds of Term Loan Priority
Collateral);” 
 “(g) (i) all Securities Accounts constituting Eligible Pledged Cash Accounts (including all
Investment Property and all funds or other property held therein or credited thereto), provided that the aggregate amount of the cash, cash equivalents, financial assets, negotiable instruments and other evidences of payment, Investment
Property and other funds or other property on deposit or held in or credited to all the Eligible Pledged Cash Accounts does not exceed at any one time the sum of (A) $43,000,000 (it being agreed that the provisions of Section 4.1(d) shall
not apply to this clause (A)), (B) the Proceeds of the ABL Facility First Priority Collateral received by the Grantors and (C) interest and other profits thereon, and (ii) all other Securities Accounts (other than Securities Accounts
that contain only the Proceeds of the Term Loan Priority Collateral) with any securities intermediary (including any and all Investment Property and all funds or other property held therein or credited thereto, other than, in each case, to the
extent constituting the identifiable Proceeds of Term Loan Priority Collateral);” 

        (ii) Clauses (a) and (j) of the definition of “Term Loan
Priority Collateral” is hereby amended and restated in their entirety as follows: 
 “(a) Deposit Accounts,
Securities Accounts and Commodity Accounts that contain only proceeds of items (b) through (k) below, other than any Eligible Pledged Cash Accounts expressly constituting ABL Facility First Priority Collateral pursuant to clause
(f) or (g) of the definition of such term;” 
 “(j) to the extent not otherwise included, all Proceeds
(including, without limitation, all insurance proceeds relating to the above and any identifiable proceeds of items (a) through (k) of this definition contained in any Deposit Accounts, Securities Accounts and Commodity Accounts that
otherwise constitute Term Loan Priority Collateral), Supporting Obligations and products of any and all of the foregoing and all collateral security and guarantees given by any Person with respect to any of the foregoing; and” 

        (iii) The following definitions are hereby added in the appropriate
alphabetical order: 
 “Eligible Pledged Cash Account” means each Deposit Account or Securities Account
established by any Grantor at Bank of America or one of its Affiliates, or any other bank or other financial institution, provided that the cash, cash equivalents, Investment Property or other funds on deposit or held therein or credited
thereto constitute a component of the “borrowing base” (however denominated) under the ABL Agreement. 
 (b) Section 9.5(a)
of the Intercreditor Agreement is hereby amended and restated in its entirety as follows: 
 “(a) No amendment or
modification of any of the provisions of this Agreement shall be effective unless the same shall be in writing and signed by the ABL Representative and the Term Loan Representative. Each Grantor agrees that this Agreement may be amended or modified
by the ABL Representative and the Term Loan Representative without notice to, or the consent of, any Grantor, provided that (i) no amendment or modification (A) to decrease the ABL Cap Amount or expand the types of Capped ABL
Obligations, or to decrease of the Term Cap Amount or expand the types of Capped Term Obligations or (B) to the definition of Eligible Pledged Cash Account (or any provision of the definitions of ABL Facility First Priority

 
Collateral or Term Loan Priority Collateral relating to Eligible Pledged Cash Accounts) may, in either case, be made without the prior written consent of the Parent and (ii) no Grantor shall
be bound by any such amendment or modification that directly and adversely affects the rights or duties of such Grantor in any material respect.” 

SECTION 3 Effect of this Agreement. (c) Except as expressly set forth herein, this Agreement shall not by implication or otherwise
limit, impair, constitute a waiver of, or otherwise affect the rights and remedies of the ABL Representative or the Term Loan Representative under the Intercreditor Agreement or any of the ABL Documents or the Term Loan Documents, and shall not
alter, modify, amend or in any way affect any of the terms, conditions, obligations, covenants or agreements contained in the Intercreditor Agreement or any of the ABL Documents or the Term Loan Documents, all of which are ratified and affirmed in
all respects and shall continue in full force and effect. Nothing herein shall be deemed to entitle any party to the Intercreditor Agreement to a consent to, or a waiver, amendment, modification or other change of, any of the terms, conditions,
obligations, covenants or agreements contained in the Intercreditor Agreement in similar or different circumstances. 
 (b) On and after the
date hereof, each reference in the Intercreditor Agreement to “this Agreement”, “hereunder”, “hereof”, “herein” or words of like import, and each reference to the Intercreditor Agreement in any ABL Document or
any Term Loan Document, shall be deemed to be a reference to the Intercreditor Agreement as amended hereby. 
 SECTION 4.
Counterparts. This Agreement may be executed in counterparts (and by different parties hereto on different counterparts), each of which shall constitute an original, but all of which when taken together shall constitute a single contract.
Delivery of an executed counterpart of a signature page of this Agreement by facsimile transmission or other electronic imaging shall be as effective as delivery of a manually executed counterpart of this Agreement. 

SECTION 5. Governing Law. This Agreement shall be construed in accordance with and governed by the law of the State of New York, except
as otherwise required by mandatory provisions of law and except to the extent that remedies provided by the laws of any jurisdiction other than the State of New York are governed by the laws of such jurisdiction. 

SECTION 6. Heading. Section headings used herein are for convenience of reference only, are not part of this Agreement and shall not
affect the construction of, or be taken into consideration in interpreting, this Agreement. 
 SECTION 7. Incorporation by Reference.
The provisions of Sections 9.8 and 9.10 of the Intercreditor Agreement are hereby incorporated by reference, mutatis mutandis, as if set forth in full herein. 

[Signature pages follow.] 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed by their
respective authorized officers as of the day and year first above written. 
  

			
	BANK OF AMERICA, N.A., as the ABL Representative for and on behalf of the ABL
Secured Parties,
		
	    by	 	 
		 	Name:
		 	Title:

 
			
	JPMORGAN CHASE BANK, N.A., as the Term Loan Representative for and on behalf of the Term Loan Secured Parties,
		
	    by	 	 
		 	Name:
		 	Title:

 WILLBROS GROUP, INC. 

WILLBROS UNITED STATES HOLDINGS, INC. 

WILLBROS GOVERNMENT SERVICES (U.S.), LLC 

WILLBROS CONSTRUCTION (U.S.), LLC 

WILLBROS ENGINEERS (U.S.), LLC 

WILLBROS ENGINEERING CALIFORNIA (U.S.), INC. 

WILLBROS MIDSTREAM SERVICES (U.S.), LLC 

WILLBROS PROJECT SERVICES (U.S.), LLC 

WILLBROS DOWNSTREAM, LLC 
 WILLBROS
WEST COAST SERVICES, INC. 
 CONSTRUCTION TANK SERVICES LLC 

WILLBROS UTILITY T&D HOLDINGS, LLC 

WILLBROS T&D SERVICES, LLC 

CHAPMAN CONSTRUCTION MANAGEMENT CO., INC. 

CHAPMAN CONSTRUCTION CO., L.P. 

WILLBROS UTILITY T&D GROUP COMMON PAYMASTER, LLC 

BEMIS, LLC 
 WILLBROS UTILITY T&D
OF MASSACHUSETTS, LLC 
 WILLBROS UTILITY T&D OF NEW YORK, LLC 

LINEAL INDUSTRIES, INC. 
 SKIBECK
PIPELINE COMPANY, INC. 
 TRAFFORD CORPORATION 
  

			
	by:	 	 
	Name:	 	
	Title:	 	

 EXHIBIT B 

[Fourth Amendment to Loan, Security and Guaranty Agreement is attached as Exhibit 10.2 to this Form 8-K.]EX-10.2

 EXHIBIT 10.2 

FOURTH AMENDMENT TO 

LOAN, SECURITY AND GUARANTY AGREEMENT 

This FOURTH AMENDMENT TO LOAN, SECURITY AND GUARANTY AGREEMENT (this “Amendment”) is entered into as of September 28,
2015, among WILLBROS UNITED STATES HOLDINGS, INC., a Delaware corporation (“Holdings”), BEMIS, LLC, a Vermont limited liability company (“Bemis”), CHAPMAN CONSTRUCTION CO., L.P., a Texas limited partnership
(“Chapman Construction”), CHAPMAN CONSTRUCTION MANAGEMENT CO., INC., a Texas corporation (“Chapman Management”), CONSTRUCTION TANK SERVICES, LLC, a Delaware limited liability company (“Construction
Tank”), WILLBROS UTILITY T&D OF MASSACHUSETTS, LLC, a New York limited liability company (“WUTDM”), WILLBROS UTILITY T&D OF NEW YORK, LLC, a New York limited liability company (“WUTDNY”), LINEAL
INDUSTRIES, INC., a Pennsylvania corporation (“Lineal”), WILLBROS WEST COAST SERVICES, INC., an Oklahoma corporation (“Willbros West Coast”), TRAFFORD CORPORATION, a Pennsylvania corporation
(“Trafford”), WILLBROS CONSTRUCTION (U.S.), LLC, a Delaware limited liability company (“Willbros Construction (U.S.)”), WILLBROS DOWNSTREAM, LLC, an Oklahoma limited liability company (“Willbros
Downstream”), WILLBROS ENGINEERING CALIFORNIA (U.S.), INC., a Delaware corporation (“Willbros Engineering California”), WILLBROS ENGINEERS (U.S.), LLC, a Delaware limited liability company (“Willbros Engineers
(U.S.)”), WILLBROS GOVERNMENT SERVICES (U.S.), LLC, a Delaware limited liability company (“Willbros Government Services”), WILLBROS PROJECT SERVICES (U.S.), LLC, a Delaware limited liability company (“Willbros
Project Services”), WILLBROS T&D SERVICES, LLC, a Delaware limited liability company (“Willbros T&D Services”, and together with Holdings, Bemis, Chapman Construction, Chapman Management, Construction Tank, WUTDM,
WUTDNY, Lineal, Willbros West Coast, Trafford, Willbros Construction (U.S.), Willbros Downstream, Willbros Engineering California, Willbros Engineers (U.S.), Willbros Government Services and Willbros Project Services, the “U.S.
Borrowers”), WILLBROS CONSTRUCTION SERVICES (CANADA) L.P., a limited partnership organized under the laws of Alberta, Canada (“Canadian Borrower” and, together with the U.S. Borrowers, the “Borrowers” and each,
a “Borrower”), WILLBROS GROUP, INC., a Delaware corporation (the “Parent”), the other Persons party to this Amendment as Guarantors, the Lenders party to this Amendment, and BANK OF AMERICA, N.A., a national banking
association, in its capacity as collateral agent and administrative agent for itself and the other Secured Parties (the “Agent”). 

RECITALS: 
 A. The
Borrowers, the Guarantors, the Agent, and the financial institutions named therein as lenders (the “Lenders”), are parties to that certain Loan, Security and Guaranty Agreement dated as of August 7, 2013 (as heretofore amended
or otherwise modified, the “Loan Agreement”), pursuant to which the Lenders agreed to make Loans and provide certain other credit accommodations to the Borrowers. Unless otherwise defined herein, all terms used herein with their
initial letter capitalized shall have the meaning given such terms in the Loan Agreement. 

 B. The Borrowers have requested that the Lenders agree to amend the Loan Agreement, among other
things, (i) to modify the Borrowing Base to include a pledged cash component and to increase the advance rate on unbilled Accounts and (ii) to provide for certain additional permitted dispositions. 

C. The Lenders have agreed to the amendments set forth below subject to the terms and conditions set forth herein, including a reduction in
the Commitments as set forth herein. 
 NOW THEREFORE, for and in consideration of the mutual covenants and agreements herein contained and
other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Borrowers, the Guarantors, the Agent and the Lenders hereby agree as follows: 

Section 1. Amendments. In reliance on the representations, warranties, covenants and agreements contained in this Amendment, the Loan Agreement
shall be amended effective as of the Fourth Amendment Effective Date (hereinafter defined) in the manner provided in this Section 1. 

1.1 Additional Definitions. Section 1.1 of the Loan Agreement shall be amended by adding the following defined terms in
appropriate alphabetical order: 
 Bemis Disposition: a disposition of Bemis (and no other Subsidiaries or assets), whether by means
of the sale of all or substantially all the assets of Bemis or by means of the sale of all the issued and outstanding Equity Interests in Bemis, provided that such disposition is consummated on or prior to December 31, 2015, pursuant to
a purchase agreement and related definitive agreements reasonably satisfactory to the Agent (with the Agent acknowledging that the form of purchase agreement provided to it on September 17, 2015 is satisfactory to the Agent). 

Canadian Eligible Pledged Cash Account: a special purpose Deposit Account established by the Canadian Borrower at Bank of America or one
of its Affiliates and designated by the Canadian Borrower and the Agent as an “Eligible Pledged Cash Account” and over which the Agent has, in accordance with Section 8.6, exclusive control for withdrawal purposes. 

Eligible Pledged Cash: on any date of determination, the aggregate amount of cash of the Canadian Borrower or the U.S. Borrowers, as
applicable, as of such date that (a) is on deposit in an Eligible Pledged Cash Account and subject to a duly perfected first priority Lien in favor of the Agent and (b) does not constitute Term Loan Priority Collateral. 

Eligible Pledged Cash Account: the Canadian Eligible Pledged Cash Account and/or the U.S. Eligible Pledged Cash Account, as applicable.

 Fourth Amendment: the Fourth Amendment to this Agreement, among the Borrowers, the Guarantors, the Lenders and the Agent. 

 Fourth Amendment Effective Date: the date on which each of the conditions precedent to the
Fourth Amendment have been satisfied (which date occurred on September 28, 2015). 
 Professional Services Disposition: a
disposition of all or substantially all the assets constituting the Professional Services Segment (excluding, at the option of the Parent, the “Governmental Services” line of business otherwise included therein), whether by means of the
sale of such assets or by means of the sale of all the issued and outstanding Equity Interests in one or more Subsidiaries holding such assets (and no other assets or Subsidiaries), provided, that such disposition is consummated on or before
December 31, 2015 (or at such later date as is consented to by the Agent in its sole discretion) pursuant to a purchase agreement and related definitive agreements reasonably satisfactory to the Agent. 

Professional Services Segment: The “Professional Services” segment of the Parent and its Subsidiaries, as described in the
Parent’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014. 
 U.S. Eligible Pledged Cash Account: a
special purpose Deposit Account established by the U.S. Borrowers at Bank of America and designated by the U.S. Borrowers and the Agent as an “Eligible Pledged Cash Account” and over which the Agent has, in accordance with
Section 8.6, exclusive control for withdrawal purposes. 
 1.2 Amendment to the definition of Canadian Borrowing Base. The
definition of “Canadian Borrowing Base” set forth in Section 1.1 of the Loan Agreement shall be amended and restated in its entirety to read as follows: 

Canadian Borrowing Base: on any date of determination, an amount equal to the lesser of (a) the Canadian Revolver Commitments and
(b) the sum, without duplication, of the following (expressed in U.S. Dollars based on the Dollar Equivalent thereof): 

(a) 85% of the Value of Canadian Eligible Accounts, plus 

(b) the lesser of (i) 75% of the Value of Canadian Eligible Unbilled Accounts (provided, that the forgoing advance
rate shall be 60% until such time as the Agent shall have completed a field examination of unbilled Accounts following the Fourth Amendment Effective Date with results satisfactory to the Agent) and (ii) $33,000,000, minus the amount of
the U.S. Eligible Unbilled Accounts then included in the U.S. Borrowing Base, plus 
 (c) 100% of the Eligible Pledged
Cash of Canadian Borrower, minus 
 (d) the Canadian Availability Reserves. 

Notwithstanding the foregoing, the aggregate amount of the Canadian Borrowing Base and the U.S. Borrowing Base that is attributable to Eligible
Accounts and 

 
Eligible Unbilled Accounts constituting progress billings, milestone billings, retainage and billings under other performance-based benchmarks shall not exceed $23,000,000 at any time. 

1.3 Amendment to the definition of Cash Dominion Event. The definition of “Cash Dominion Event” set forth in Section 1.1
of the Loan Agreement shall be amended and restated in its entirety to read as follows: 
 Cash Dominion Event: the occurrence of any
one of the following events: (i) Excess Availability shall be less than (A) the greater of 15% of the Commitments or $15,000,000 for five consecutive days or (B) the greater of 12.5% of the Commitments or $12,500,000 at any time; or
(ii) (A) an Event of Default under Section 11.1.1 or 11.1.5 shall have occurred and be continuing or (B) any other Event of Default shall have occurred and be continuing and Agent shall have determined, in its sole
discretion or at the direction of the Required Lenders (by written notice to Borrower Agent), to effect a Cash Dominion Event as a result of such other Event of Default; provided that, notwithstanding anything herein to the contrary, if a Cash
Dominion Event occurs, it shall be deemed to continue until Full Payment of all Obligations. 
 1.4 Amendment to the Definition of
Commitment. The definition of “Commitment” set forth in Section 1.1 of the Loan Agreement shall be amended and restated in its entirety to read as follows: 

Commitment: for any Lender, the aggregate amount of such Lender’s Borrower Group Commitments. “Commitments” means
the aggregate amount of all Borrower Group Commitments, which amount shall on the Fourth Amendment Effective Date be equal to the sum of (a) $20,000,000 in respect of the Canadian Revolver Commitments and (b) $80,000,000 in respect of the
U.S. Revolver Commitments. 
 1.5 Amendment to the Definition of Letter of Credit Sublimit. The definition of “Letter of Credit
Sublimit” set forth in Section 1.1 of the Loan Agreement shall be amended and restated in its entirety to read as follows: 

Letter of Credit Sublimit: $80,000,000. 

1.6 Amendment to the Definition of LIBOR. The definition of “LIBOR” set forth in Section 1.1 of the Loan Agreement shall
be amended and restated in its entirety to read as follows: 
 LIBOR: for any Interest Period, the per annum rate of interest (not
less than zero percent (0%), rounded up, if necessary, to the nearest 1/8th of 1%) determined by Agent at approximately 11:00 a.m. (London time) two Business Days prior to commencement of such Interest Period, for a term comparable to such Interest
Period, equal to (a) the London interbank offered rate as administered by ICE Benchmark Administration Limited or successor thereto if such administration is no longer making such rate available, as published by Reuters (or other

 
commercially available source designated by Agent); or (b) if the rate described in clause (a) is unavailable for any reason, the interest rate at which Dollar deposits in the
approximate amount of the Loan and for a term comparable to such Interest Period would be offered by Agent’s London branch to major banks in the London interbank Eurodollar market. 

1.7 Amendment to the Definition of Maximum Facility Amount. The definition of “Maximum Facility Amount” set forth in
Section 1.1 of the Loan Agreement shall be amended and restated in its entirety to read as follows: 
 Maximum Facility Amount:
$175,000,000. 
 1.8 Amendment to the Definition of Trigger Period. The definition of “Trigger Period” set forth in
Section 1.1 of the Loan Agreement shall be amended and restated in its entirety to read as follows: 
 Trigger Period: the period
(a) commencing on the day that Excess Availability is less than the greater of (i) fifteen percent (15%) of the Commitments and (ii) $15,000,000 at any time; and (b) continuing until, during each of the preceding 45
consecutive days, Excess Availability has been higher than the greater of (i) fifteen percent (15%) of the Commitments and (ii) $15,000,000 at all times. 

1.9 Amendment to the definition of U.S. Borrowing Base. The definition of “U.S. Borrowing Base” set forth in Section 1.1
of the Loan Agreement shall be amended and restated in its entirety to read as follows: 
 U.S. Borrowing Base: on any date of
determination, with respect to the U.S. Borrowers, an amount equal to the lesser of (a) the U.S. Revolver Commitments minus the Availability Block and (b) the sum, without duplication, of the following: 

(a) 85% of the Value of U.S. Eligible Accounts, plus 

(b) the lesser of (i) 75% of the Value of U.S. Eligible Unbilled Accounts (provided, that the forgoing advance rate
shall be 60% until such time as Agent shall have completed a field examination of unbilled Accounts following the Fourth Amendment Effective Date with results satisfactory to the Agent) and (ii) $33,000,000 minus the amount of the
Canadian Eligible Unbilled Accounts then included in the Canadian Borrowing Base, plus 
 (c) 100% of the Eligible
Pledged Cash of U.S. Borrowers, minus 
 (d) the U.S. Availability Reserves. 

Notwithstanding the foregoing, the aggregate amount of the Canadian Borrowing Base and the U.S. Borrowing Base that is attributable to Eligible
Accounts and Eligible Unbilled Accounts constituting progress billings, milestone billings, retainage and billings under other performance-based benchmarks shall not exceed $23,000,000 at any time. 

 1.10 Amendment to Section 8. Section 8 of the Loan Agreement shall be amended to
add a new Section 8.6 at the end thereof, which shall read in full as follows: 
 8.6. Eligible Pledged Cash Accounts. The
Canadian Borrower and the U.S. Borrowers may (and the Agent shall permit such Borrowers to), at any time and from time to time, deposit cash into the applicable Eligible Pledged Cash Account in an amount not less than $1,000,000, provided
that (a) the initial cash deposit into the Eligible Pledged Cash Accounts shall be a deposit by the U.S. Borrowers into the U.S. Eligible Pledged Cash Account and (b) with respect to each deposit, the Borrower Agent shall have delivered to
the Agent an updated Borrowing Base Certificate reflecting the increase in the Canadian Borrowing Base or the U.S. Borrowing Base, as applicable, attributable solely to the increase in the Eligible Pledged Cash resulting from such deposit (and the
Canadian Borrowing Base or the U.S. Borrowing Base, as applicable, then in effect shall, until the next redetermination thereof in accordance with this Agreement, be determined on the basis of such Borrowing Base Certificate). The Agent shall have
exclusive control over withdrawals from any Eligible Pledged Cash Account, provided that the Canadian Borrower and the U.S. Borrowers may (and the Agent shall permit such Borrowers to), upon not less than five Business Days’ prior
written notice to the Agent by the Borrower Agent, withdraw Eligible Pledged Cash from the applicable Eligible Pledged Cash Account if (i) no Default or Event of Default exists immediately prior to such withdrawal or would exist immediately
after giving effect thereto, (ii) immediately after giving effect to such withdrawal, the Canadian Availability or the U.S. Availability, as applicable, shall not be less than zero and (iii) the Borrower Agent shall have delivered to the
Agent an updated Borrowing Base Certificate reflecting the reduction in the Canadian Borrowing Base or the U.S. Borrowing Base, as applicable, attributable solely to the reduction in the Eligible Pledged Cash resulting from such withdrawal (and the
Canadian Borrowing Base or the U.S. Borrowing Base, as applicable, then in effect shall, until the next redetermination thereof in accordance with this Agreement, be determined on the basis of such Borrowing Base Certificate); provided
further that (A) unless the Agent shall have otherwise agreed in its discretion, a withdrawal by the Borrowers may not be made more frequently than once in any calendar month and (B) no Borrower may withdraw any Eligible Pledged Cash
from an Eligible Pledged Cash Account until after the date that the Parent and its Subsidiaries have a Fixed Charge Coverage Ratio of at least 1.15 to 1.00 for two consecutive Fiscal Quarters following the Fourth Amendment Effective Date for which
financial statements have been delivered in accordance with Section 10.1.6(a) or 10.1.6(b) (such Fixed Charge Coverage Ratio to be determined on the basis of the six (6) month period comprising such Fiscal Quarters instead of
the period of twelve (12) months referred to in the definition of such term) and a Financial Officer of Parent shall have delivered a certificate certifying as to the foregoing and containing a reasonably detailed calculation thereof. Each
Eligible Pledged Cash Account shall be a money market deposit 

 
account offered by Bank of America or any of its Affiliates and established by Canadian Borrower or U.S. Borrowers, as applicable, in each case, at the Borrowers’ sole risk and expense.
Interest or profits, if any, on such deposit shall accumulate in the applicable Eligible Pledged Cash Account and be part of the Eligible Pledged Cash. 

1.11 Amendment to Section 10.2.1. Clause (f) of Section 10.2.1 of the Loan Agreement shall be amended and restated in
its entirety to read as follows: 
 (f) Liens securing Debt permitted under Section 10.2.2(i) or other obligations relating to
the payment of insurance premiums (and, in the case of workers’ compensation insurance and liability insurance, deductibles required to be deposited with the provider thereof); provided that such Liens do not extend to any assets of the
Parent or any of its Subsidiaries other than assets of the type customarily subject to such Liens (including rights under the applicable insurance policies and, in the case of workers’ compensation insurance and liability insurance, cash and
Cash Equivalents required to be deposited with the provider thereof); 
 1.12 Amendments to Section 10.2.4. Clauses (c) and
(g), respectively, of Section 10.2.4 of the Loan Agreement shall be amended and restated in their entirety to read as follows: 
 (c)
Asset Dispositions (other than (1) the Bemis Disposition (disregarding the proviso set forth in the definition of such term), (2) the Professional Services Disposition (disregarding the proviso set forth in the definition of such term),
(3) dispositions of Equity Interests in Holdings or the Canadian Borrower, and (4) dispositions of any Accounts (including unbilled Accounts) except as part of a disposition of Equity Interests in a Person owning such Accounts or of a
business, division or substantially all assets of a Person) not otherwise permitted under this Section 10.2.4; provided that (i) at the time of each such Asset Disposition, no Default or Event of Default (including any
Overadvance) shall exist or would result from such Asset Disposition, (ii) in the case of any such Asset Disposition, (A) the aggregate amount of cash received by the Obligors as consideration therefor is not less than the net book value
(less associated liabilities) of the assets disposed in such Asset Disposition and (B) the sales price for such Asset Disposition (together with the sales price for any series of related Asset Dispositions) is less than $25,000,000,
(iii) if such Asset Disposition includes a disposition of any ABL Facility First Priority Collateral (or, in the case of a disposition by the Canadian Subsidiaries, assets that are of the same type as the ABL Facility First Priority
Collateral), the Net Proceeds of such Asset Disposition in an amount equal to the net book value of such disposed ABL Facility First Priority Collateral (or, in the case of a disposition by the Canadian Subsidiaries, such disposed assets) shall be
applied to repay, to the extent of the outstanding amount thereof, the U.S. Revolving Loans or the Canadian Revolving Loans, as applicable (and, for the avoidance of doubt, if the Loans are repaid in full, any such remaining Net Proceeds may be used
to prepay the Term Debt in accordance with the requirements of Section 10.2.14(f)(i) – (iii)), (iv) to the extent required 

 
thereby, the Net Proceeds of such Asset Disposition constituting Term Loan Priority Collateral are applied in accordance with the Term Loan Credit Agreement and (v) the Borrower Agent
shall have delivered with respect thereto an updated Borrowing Base Certificate required under Section 8.1; 
 (g) the Bemis
Disposition and the Professional Services Disposition; provided that (i) at the time of each such Asset Disposition, no Default or Event of Default (including any Overadvance) shall exist or would result from such Asset Disposition,
(ii) (A) the aggregate amount of cash received by the Obligors as consideration for the Bemis Disposition is not less than the net book value (less the associated liabilities) of the assets disposed in the Bemis Disposition and
(B) the aggregate amount of cash received by the Obligors as consideration for the Professional Services Disposition is not less than the net book value (less associated liabilities) of the assets disposed in the Professional Services
Disposition, (iii) if the Bemis Disposition or the Professional Services Disposition, as applicable, includes a disposition of any ABL Facility First Priority Collateral (or, in the case of a disposition by the Canadian Subsidiaries, assets
that are of the same type as the ABL Facility First Priority Collateral), the Net Proceeds of the Bemis Disposition or the Professional Services Disposition, as applicable, in an amount equal to the net book value of such disposed ABL Facility First
Priority Collateral (or, in the case of any disposition by the Canadian Subsidiaries, such disposed assets) shall be applied to repay, to the extent of the outstanding amount thereof, the U.S. Revolving Loans or the Canadian Revolving Loans, as
applicable (and, for the avoidance of doubt, if the Loans are prepaid in full, any such remaining Net Proceeds may be used to prepay the Term Debt in accordance with the requirements of Section 10.2.14(f)(i) – (iii) or
10.2.14(g)), (iv) subject to clause (iii) above, the Net Proceeds of the Bemis Disposition and the Professional Services Disposition shall be used by the Parent and its Subsidiaries solely for (A) working capital or other
general corporate purposes in the Ordinary Course of Business (including as Eligible Pledged Cash and as cash collateral to support obligations of the Parent and its Subsidiaries in respect of letters of credit, surety bonds, performance bonds and
similar obligations), in each case, excluding any Investments (other than intercompany loans and advances), Acquisitions and Restricted Payments, whether or not otherwise permitted hereunder, (B) repayment or prepayment of Loans (including as
required under clause (iii) above) or other Obligations and (C) payments and distributions in respect of Term Debt to the extent permitted by Section 10.2.14(f)(i) – (iii) or 10.2.14(g), (v) the U.S.
Borrowers shall deposit the Net Proceeds from the Bemis Disposition and the Professional Services Disposition into the U.S. Eligible Pledged Cash Account within one Business Day following receipt of any portion thereof, provided that this clause
(v) shall cease to apply after the aggregate amount so deposited is at least $25,000,000, and (vi) the Borrower Agent shall have delivered with respect thereto an updated Borrowing Base Certificate required under Section 8.1.

 1.13 Amendments to Section 10.2.14. Section 10.2.14 of the Loan Agreement shall be amended by (a) deleting
“and” at the end of clause (e) thereof, (b) amending and restating in its entirety clause (f) thereof to read as set forth below and (c) adding a new clause (g) at the end thereof, which shall read in full as
follows: 

 (f) other payments and distributions in respect of Debt (including the Term Debt);
provided that (i) Excess Availability exceeds the greater of 20% of the Commitments and $20,000,000, (ii) the Parent and its Subsidiaries have an Adjusted Fixed Charge Coverage Ratio of at least 1.15 to 1.00 and (iii) no
Default or Event of Default has occurred which is continuing, in each case both before and after giving effect to such payment or distribution; provided, further, that (A) mandatory prepayments of the Term Debt made as a result
and to the extent of the proceeds of any sale, transfer or other disposition of any Term Loan Priority Collateral (or, in the case of any sale, transfer or other disposition by the Canadian Subsidiaries, assets that are of the same type as the Term
Loan Priority Collateral), other than the Bemis Disposition and the Professional Services Disposition, shall not be subject to the limitations set forth in the immediately preceding proviso and (B) prior to making any payment or distribution
hereunder that is subject to the limitations of such clauses, the Borrower Agent shall deliver to the Agent a certificate from a Financial Officer of the Parent in form and substance reasonably satisfactory to the Agent certifying compliance with
clauses (f)(ii) and (f)(iii) above; and 
 (g) other payments and distributions in respect of the Term Debt made in connection with the Bemis
Disposition and/or the Professional Services Disposition, provided that the aggregate principal amount of the Term Debt prepaid or repaid in reliance on this clause (g), together with all fees and premiums paid in respect of such prepayment
or repayment, shall not exceed (i) the aggregate amount of the Net Proceeds received by the Obligors in cash as consideration for the Bemis Disposition and the Professional Services Disposition less (ii) $43,000,000, provided
further that such payment is made within 3 Business Days following consummation of both the Bemis Disposition and the Professional Services Disposition (whichever is later). 

1.14 Replacement of Schedules 1.1(a) and 1.1(b). Schedules 1.1(a) and 1.1(b) to the Loan Agreement shall be restated in their entirety
to be in the form of Schedules 1.1(a) and 1.1(b), respectively, to this Amendment. 
 Section 2. Amendment to the Intercreditor
Agreement. Each Lender and Issuing Bank hereby (a) authorizes and directs the Agent to execute and deliver an amendment to the Intercreditor Agreement in the form of Exhibit A hereto, in each case, on behalf of such Lender or Issuing Bank
and without any further consent, authorization or other action by such Lender or Issuing Bank, and (b) agrees that, upon the execution and delivery thereof, such Lender or Issuing Bank will be bound by the provisions of the Intercreditor
Agreement, as so amended, as if it were a signatory thereto and will take no actions contrary to the provisions of the Intercreditor Agreement, as so amended. 

Section 3. Amendment to Term Loan Credit Agreement. Each Lender hereby agrees that on the Fourth Amendment Effective Date the Term Loan Credit
Agreement shall be amended as set 

 
forth on Exhibit B hereto and that, notwithstanding anything to the contrary in the Loan Agreement or any other Loan Document, such amendment shall be permitted under the Loan Agreement and the
other Loan Documents. 
 Section 4. Conditions Precedent. Each of the amendments contained in Section 1 hereof and agreements set forth in
Sections 2 and 3 hereof are subject to the satisfaction of each of the following conditions precedent (the date on which all such conditions are satisfied, the “Fourth Amendment Effective Date”): 

4.1 Fourth Amendment. The Agent shall have received counterparts of this Amendment executed on behalf of the Agent, each Obligor and
each Lender. 
 4.2 Amendment Fee. The Agent shall have received an amendment fee for the benefit of the Lenders in an amount for
each Lender equal to 10.0 basis points (0.10%) of the amount of such Lender’s Commitment as of the Fourth Amendment Effective Date (determined after giving effect to this Amendment). 

4.3 Consent of Term Loan Agent. The Borrowers shall have received the consent of the Term Loan Agent to (a) the Borrowing Base
amendments and (b) the amendments to the limitations on prepayments of the Term Debt contemplated by this Amendment. 
 Section 5.
Representations and Warranties. To induce the Lenders and Agent to enter into this Amendment, each Obligor hereby represents and warrants to Lenders and Agent that, as of the Fourth Amendment Effective Date: 

5.1 Loan Document Representations and Warranties. Each representation and warranty of such Obligor contained in the Loan Agreement and
the other Loan Documents is true and correct in all material respects (except to the extent that any such representation and warranty is qualified by materiality in which case it is true and correct in all respects) on the date hereof (except for
representations and warranties that expressly relate to an earlier date in which case such representations and warranties were true and correct in all material respects (except to the extent that any such representation and warranty is qualified by
materiality in which case it was true and correct in all respects) as of such earlier date). 
 5.2 No Defaults. No Default or Event
of Default has occurred and is continuing. 
 5.3 Power and Authority; No Contravention; Authorizations and Approvals. The execution,
delivery and performance by such Obligor of this Amendment (a) are within such Obligor’s organizational powers, (b) have been duly authorized by all necessary organizational action on the part of such Obligor, (c) require no
action by or in respect of, or filing with, any Governmental Authority except actions by, and notices to or filings with, Governmental Authorities (including, without limitation, the SEC) that may be required in the Ordinary Course of Business from
time to time or that may be required to comply with the express requirements of the Loan Documents, (d) do not violate any provision of Applicable Law in any material respect or contravene the terms of any Organic Document or the Term Loan
Documents and (e) do not contravene any provision of any other indenture, instrument or agreement binding upon such Obligor except as could not reasonably be expected to have a Material Adverse Effect. 

 5.4 Enforceable Obligations. This Amendment is a legal, valid and binding obligation of
such Obligor enforceable in accordance with its terms, except as enforceability may be limited by any applicable Debtor Relief Laws or general principles of equity. 

Section 6. Miscellaneous. 
 6.1
Field Examination. Each Obligor shall, and shall cause each Subsidiary to, in addition to any examinations permitted under Section 10.1.9 and 10.1.10 of the Loan Agreement, permit the Agent or its designees to conduct an additional field
examination of the Parent’s and its Subsidiaries’ unbilled Accounts (and the Agent agrees to commence (subject to the reasonable cooperation of the Parent and its Subsidiaries) such field examination promptly following the date of this
Agreement). Neither the Agent nor any Lender shall have any duty to any Obligor to share any results of any such field examinations with any Obligor. The Obligors acknowledge that such field examination and any reports with respect thereto are
conducted for, and prepared by, the Agent for its and the Lenders’ purposes, and the Obligors shall not be entitled to rely upon them. The Borrowers agree to pay the Agent’s then standard charges for such field examination activities,
including the standard charges of the Agent’s or its designees’ internal examination groups, as well as the charges of any third party used for such purposes, and all out-of-pocket costs and expenses of the foregoing Persons (which field
examination and payment obligation shall not be subject to or count towards the frequency limits set forth in Section 10.1.9 of the Loan Agreement). 

6.2 Reaffirmation of Loan Documents. All of the terms and provisions of the Loan Agreement and the other Loan Documents shall, except
as amended and modified hereby, remain in full force and effect and are hereby ratified and affirmed by the Obligors. The amendments contemplated hereby shall not limit or impair any Liens securing the Obligations, which Liens are hereby ratified
and affirmed by the Obligors. This Amendment is a Loan Document. 
 6.3 Reaffirmation of Guaranty. Each Guarantor hereby ratifies and
affirms its guaranty obligations under Section 5.10 of the Loan Agreement and agrees that such Guarantor continues to unconditionally and irrevocably guarantee the prompt payment and performance of the Obligations or the Canadian Facility
Obligations thereunder, as applicable. 
 6.4 Parties in Interest. All of the terms and provisions of this Amendment shall bind and
inure to the benefit of the parties hereto and their respective successors and assigns. 
 6.5 Legal Expenses. As provided in
Section 3.4 of the Loan Agreement, Borrowers hereby agree to pay on demand all reasonable fees and expenses of counsel to Agent incurred by Agent in connection with the preparation, negotiation and execution of this Amendment and all related
documents. 
 6.6 Counterparts; Execution. This Amendment may be executed in counterparts, and all parties need not execute the same
counterpart; however, no party shall be bound by this Amendment until all Borrowers, all Guarantors, Lenders and Agent have executed a counterpart. Facsimiles or other electronic transmissions (e.g., .pdf) shall be effective as originals. 

 6.7 Entire Agreement. THIS AMENDMENT, THE LOAN AGREEMENT AND THE OTHER LOAN DOCUMENTS
REPRESENT THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR ORAL AGREEMENTS BETWEEN THE PARTIES. THERE ARE NO UNWRITTEN AGREEMENTS BETWEEN THE PARTIES. 

6.8 Headings. The headings, captions and arrangements used in this Amendment are, unless specified otherwise, for convenience only and
shall not be deemed to limit, amplify or modify the terms of this Amendment, nor affect the meaning thereof. 
 6.9 Governing Law.
This Amendment shall be governed by the laws of the State of New York, without giving effect to any conflict of law principles (but giving effect to federal laws relating to national banks). 

6.10 FATCA. For purposes of determining withholding Taxes imposed under FATCA, from and after the Fourth Amendment Effective Date, the
Obligors and the Agent shall treat (and the Lenders hereby authorize the Agent to treat) the Loan Agreement as not qualifying as a “grandfathered obligation” within the meaning of Treasury Regulation Section 1.1471-2(b)(2)(i). 

6.11 Release. Each Obligor hereby remises, releases, acquits, satisfies and forever discharges the Agent, the Lenders and their
respective agents, employees, officers, directors, predecessors, attorneys and all others acting or purporting to act on behalf of or at the direction of the Agent or the Lenders (“Releasees”), of and from any and all manner of
actions, causes of action, suits, damages, claims and demands, in each case, that as of the date hereof are known or reasonably should be known to such Obligor, in law or in equity, which such Obligor ever had, now has or, to the extent arising from
or in connection with any act, omission or state of facts taken or existing on or prior to the date hereof, may have after the date hereof against the Releasees, for, upon or by reason of any matter, cause or thing whatsoever through the date hereof
(it being understood that nothing in this sentence shall release or otherwise affect the covenants of the Releasees under the Loan Agreement and the other Loan Documents, in each case, after the Fourth Amendment Effective Date). Without limiting the
generality of the foregoing, each Obligor hereby waives and affirmatively agrees not to allege or otherwise pursue any actions, causes of action, suits, damages, claims and demands that it shall or may have as of the date hereof against any
Releasees in connection with the Loan Agreement or the other Loan Documents, including, but not limited to, the rights to contest (a) the right of the Agent and each Lender to exercise its rights and remedies described in the Loan Agreement,
(b) any provision of the Loan Agreement or the other Loan Documents or (c) any conduct of the Agent, the Lenders or other Releasees relating to or arising out of the Loan Agreement or the other Loan Documents on or prior to the date
hereof. 
 [Remainder of page intentionally left blank. Signature page follows.] 

 IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed by their
respective authorized officers effective as of the date and year first above written. 
  

			
	 U.S. BORROWERS:
  

WILLBROS UNITED STATES HOLDINGS, INC., a Delaware corporation

BEMIS, LLC, a Vermont limited liability company
 CHAPMAN
CONSTRUCTION CO., L.P., a Texas limited partnership
 CHAPMAN CONSTRUCTION MANAGEMENT CO., INC., a Texas corporation

CONSTRUCTION TANK SERVICES, LLC, a Delaware limited liability company

WILLBROS UTILITY T&D OF MASSACHUSETTS, LLC, a New York limited liability company

WILLBROS UTILITY T&D OF NEW YORK, LLC, a New York limited liability company

LINEAL INDUSTRIES, INC., a Pennsylvania corporation

WILLBROS WEST COAST SERVICES, INC., an Oklahoma corporation

TRAFFORD CORPORATION, a Pennsylvania corporation

WILLBROS CONSTRUCTION (U.S.), LLC, a Delaware limited liability company

WILLBROS DOWNSTREAM, LLC, an Oklahoma limited liability company

WILLBROS ENGINEERING CALIFORNIA (U.S.), INC., a Delaware Corporation

WILLBROS ENGINEERS (U.S.), LLC, a Delaware limited liability corporation

WILLBROS GOVERNMENT SERVICES (U.S.), LLC, a Delaware limited liability company

WILLBROS PROJECT SERVICES (U.S.), LLC, a Delaware limited liability company

WILLBROS T&D SERVICES, LLC, a Delaware limited liability company

		
	By:	 	/s/ Richard W. Russler
	Name:	 	Richard W. Russler
	Title:	 	Treasurer of each of the above listed entities

 [Signature Page] 

FOURTH AMENDMENT TO LOAN, SECURITY AND
GUARANTY AGREEMENT 
 WILLBROS UNITED STATES
HOLDINGS, INC., ET AL. 

 
			
	 CANADIAN BORROWER:
  

WILLBROS CONSTRUCTION SERVICES (CANADA), L.P., an Alberta limited partnership, by its General Partner, WILLBROS (CANADA) GP I LIMITED

		
	By:	 	/s/ Richard W. Russler
	Name:	 	Richard W. Russler
	Title:	 	Treasurer
	
	 U.S. FACILITY GUARANTORS:
  

WILLBROS GROUP, INC., a Delaware corporation
 WILLBROS
MIDSTREAM SERVICES (U.S.), LLC, a Delaware limited liability company
 WILLBROS UTILITY T&D HOLDINGS, LLC, a Delaware limited liability
company
 WILLBROS UTILITY T&D GROUP COMMON PAYMASTER, LLC, a Delaware limited liability company

SKIBECK PIPELINE COMPANY, INC., a New York corporation

		
	By:	 	/s/ Richard W. Russler
	Name:	 	Richard W. Russler
	Title:	 	Treasurer of each of the above listed entities

 [Signature Page] 

FOURTH AMENDMENT TO LOAN, SECURITY AND
GUARANTY AGREEMENT 
 WILLBROS UNITED STATES
HOLDINGS, INC., ET AL. 

 
			
	 CANADIAN FACILITY GUARANTORS
  

WILLBROS CANADA HOLDINGS ULC, a British Columbia unlimited liability company

WILLBROS (CANADA) GP I LIMITED, a British Columbia corporation

WILLBROS (CANADA) GP IV LIMITED, a British Columbia corporation

WILLBROS (CANADA) GP V LIMITED, a British Columbia corporation

0795781 B.C. LTD., a British Columbia corporation
 P/L
EQUIPMENT LP, an Alberta limited partnership, by its General Partner, 0795781 B.C. LTD.
 WILLBROS FACILITIES & TANKS (CANADA) LP, an
Alberta limited partnership, by its General Partner, WILLBROS (CANADA) GP IV LIMITED
 WILLBROS PSS MIDSTREAM (CANADA) LP, an Alberta limited
partnership, by its General Partner, WILLBROS (CANADA) GP V LIMITED

		
	By:	 	/s/ Richard W. Russler
	Name:	 	Richard W. Russler
	Title:	 	Treasurer of each of the above listed entities

 [Signature Page] 

FOURTH AMENDMENT TO LOAN, SECURITY AND
GUARANTY AGREEMENT 
 WILLBROS UNITED STATES
HOLDINGS, INC., ET AL. 

 
			
	 AGENT AND LENDERS:
  

BANK OF AMERICA, N.A.,
 as Agent, a U.S. Lender, U.S.
Swingline Lender, and U.S. Issuing Bank

		
	By:	 	/s/ Laura Parrish
	Name:	 	Laura Parrish
	Title:	 	Vice President

 [Signature Page] 

FOURTH AMENDMENT TO LOAN, SECURITY AND
GUARANTY AGREEMENT 
 WILLBROS UNITED STATES
HOLDINGS, INC., ET AL. 

 
			
	BANK OF AMERICA, N.A. (acting through its Canada branch), as a Canadian Lender, Canadian Swingline Lender and Canadian Issuing Bank
		
	By:	 	/s/ Sylwia Durkiewicz
	Name:	 	Sylwia Durkiewicz
	Title:	 	Vice President

 [Signature Page] 

FOURTH AMENDMENT TO LOAN, SECURITY AND
GUARANTY AGREEMENT 
 WILLBROS UNITED STATES
HOLDINGS, INC., ET AL. 

 
			
	CAPITAL ONE LEVERAGE FINANCE CORP., as a U.S. Lender
		
	By:	 	/s/ Lawrence J. Cannariato
	Name:	 	Lawrence J. Cannariato
	Title:	 	Vice President

 [Signature Page] 

FOURTH AMENDMENT TO LOAN, SECURITY AND
GUARANTY AGREEMENT 
 WILLBROS UNITED STATES
HOLDINGS, INC., ET AL. 

 
			
	WELLS FARGO BANK, NATIONAL ASSOCIATION, as a U.S. Lender
		
	By:	 	/s/ Reza Sabahi
	Name:	 	Reza Sabahi
	Title:	 	Duly Authorized Signer

 [Signature Page] 

FOURTH AMENDMENT TO LOAN, SECURITY AND
GUARANTY AGREEMENT 
 WILLBROS UNITED STATES
HOLDINGS, INC., ET AL. 

 
			
	WELLS FARGO CAPITAL FINANCE CORPORATION CANADA, as a Canadian Lender
		
	By:	 	/s/ David G. Phillips
	Name:	 	David G. Phillips
	Title:	 	Senior Vice President

 [Signature Page] 

FOURTH AMENDMENT TO LOAN, SECURITY AND
GUARANTY AGREEMENT 
 WILLBROS UNITED STATES
HOLDINGS, INC., ET AL. 

 
			
	 SUNTRUST BANK,
 as a U.S.
Lender and a Canadian Lender

		
	By:	 	/s/ Janet R. Naifeh
	Name:	 	Janet R. Naifeh
	Title:	 	Senior Vice President

 [Signature Page] 

FOURTH AMENDMENT TO LOAN, SECURITY AND
GUARANTY AGREEMENT 
 WILLBROS UNITED STATES
HOLDINGS, INC., ET AL. 

 SCHEDULE 1.1(a) 

to 
 Loan, Security and Guaranty
Agreement 
 CANADIAN REVOLVER COMMITMENTS 
  

			
	 Canadian Lender
	  	Canadian Revolver Commitment
	 Bank of America, N.A. (acting through its Canada branch)
	  	$12,000,000.00
	 Wells Fargo Capital Finance Corporation Canada
	  	$  4,666,666.40
	 SunTrust Bank
	  	$  3,333,333.60
		  	  

	 Total
	  	$20,000,000.00
		  	  

  
 Schedule 1.1(a) 

 SCHEDULE 1.1(b) 

to 
 Loan, Security and Guaranty
Agreement 
 U.S. REVOLVER COMMITMENTS 
  

					
	 U.S. Lender
	  	U.S. Revolver Commitment	 
	 Bank of America, N.A.
	  	$	25,600,000.00	  
	 Capital One Leverage Finance Corp.
	  	$	22,400,000.00	  
	 Wells Fargo Bank, National Association
	  	$	18,666,666.88	  
	 SunTrust Bank
	  	$	13,333,333.12	  
		  	  
	  
	 
	 Total
	  	$	80,000,000.00	  
		  	  
	  
	 

  
 Schedule 1.1(b) 

 EXHIBIT A 

FIRST AMENDMENT dated as of September 28, 2015 (this “Agreement”), to the Intercreditor Agreement dated
as of August 7, 2013 (as modified by the Notice of Refinancing and Reaffirmation of Intercreditor Agreement dated as of December 15, 2014, the “Intercreditor Agreement”), among Bank of America, N.A., as Agent for the ABL
Secured Parties (in such capacity, the “ABL Representative”), JPMorgan Chase Bank, as Administrative Agent for the Term Loan Secured Parties (in such capacity, the “Term Loan Representative”), and the Grantors party
thereto. 
 WHEREAS, pursuant to the Fourth Amendment to Loan, Security and Guaranty Agreement dated as of the date hereof (the “ABL
Fourth Amendment”), (a) the Existing ABL Agreement has been modified to, among other things, include Eligible Pledged Cash (as defined in the Existing ABL Agreement) in the Canadian Borrowing Base and the U.S. Borrowing Base (in each
case, as defined in the Existing ABL Agreement) and (b) the Lenders under the Existing ABL Agreement have authorized the ABL Representative to enter into this Agreement. 

WHEREAS, pursuant to the Second Amendment dated as of the date hereof to the Term Loan Agreement (the “Term Second
Amendment”), the Lenders under the Term Loan Agreement have authorized the Term Loan Representative to enter into this Agreement. 

WHEREAS, the ABL Representative, the Term Loan Representative and the Grantors desire to amend the Intercreditor Agreement as set forth below.

 NOW THEREFORE, in consideration of the mutual agreements herein contained and other good and valuable consideration, the sufficiency and
receipt of which are hereby acknowledged, the parties hereto agree as follows: 
 SECTION 1. Defined Terms. Capitalized terms used
but not defined herein (including the recitals hereto) shall have the meanings assigned to them in the Intercreditor Agreement. 
 SECTION
2. Amendments to the Intercreditor Agreement. 
 Section 1.2 of the Intercreditor Agreement is hereby amended as follows: 

(i) Clauses (f) and (g) of the definition of “ABL Facility First Priority Collateral” are hereby amended
and restated in their entirety as follows: 
 “(f) (i) all Deposit Accounts constituting Eligible Pledged Cash
Accounts (including all cash, cash equivalents, financial assets, negotiable instruments and other evidence of payment, and other funds on deposit therein or credited thereto), provided that the aggregate amount of the cash, cash equivalents,
financial assets, negotiable instruments and other evidences of payment, Investment Property and other funds or other property on deposit or held in or credited to all the Eligible Pledged Cash Accounts does not exceed at any one time the sum of
(A) $43,000,000 (it being agreed that the provisions of Section 4.1(d) shall not apply to this clause (A)), (B) the Proceeds of the ABL Facility First Priority Collateral received by the Grantors and (C) interest and other
profits thereon, and (ii) all other Deposit Accounts (other than Deposit Accounts that contain only the Proceeds of the Term Loan Priority Collateral) with any bank or other financial institution (including all cash, cash equivalents, financial
assets, negotiable instruments and other 

  
 1 

 
evidence of payment, and other funds on deposit therein or credited thereto, other than, in each case, to the extent constituting the identifiable Proceeds of Term Loan Priority
Collateral);” 
 “(g) (i) all Securities Accounts constituting Eligible Pledged Cash Accounts (including all
Investment Property and all funds or other property held therein or credited thereto), provided that the aggregate amount of the cash, cash equivalents, financial assets, negotiable instruments and other evidences of payment, Investment
Property and other funds or other property on deposit or held in or credited to all the Eligible Pledged Cash Accounts does not exceed at any one time the sum of (A) $43,000,000 (it being agreed that the provisions of Section 4.1(d) shall
not apply to this clause (A)), (B) the Proceeds of the ABL Facility First Priority Collateral received by the Grantors and (C) interest and other profits thereon, and (ii) all other Securities Accounts (other than Securities Accounts
that contain only the Proceeds of the Term Loan Priority Collateral) with any securities intermediary (including any and all Investment Property and all funds or other property held therein or credited thereto, other than, in each case, to the
extent constituting the identifiable Proceeds of Term Loan Priority Collateral);” 
 (ii) Clauses (a) and
(j) of the definition of “Term Loan Priority Collateral” is hereby amended and restated in their entirety as follows: 

“(a) Deposit Accounts, Securities Accounts and Commodity Accounts that contain only proceeds of items (b) through
(k) below, other than any Eligible Pledged Cash Accounts expressly constituting ABL Facility First Priority Collateral pursuant to clause (f) or (g) of the definition of such term;” 

“(j) to the extent not otherwise included, all Proceeds (including, without limitation, all insurance proceeds relating to
the above and any identifiable proceeds of items (a) through (k) of this definition contained in any Deposit Accounts, Securities Accounts and Commodity Accounts that otherwise constitute Term Loan Priority Collateral), Supporting
Obligations and products of any and all of the foregoing and all collateral security and guarantees given by any Person with respect to any of the foregoing; and” 

(iii) The following definitions are hereby added in the appropriate alphabetical order: 

“Eligible Pledged Cash Account” means each Deposit Account or Securities Account established by any Grantor at
Bank of America or one of its Affiliates, or any other bank or other financial institution, provided that the cash, cash equivalents, Investment Property or other funds on deposit or held therein or credited thereto constitute a component of
the “borrowing base” (however denominated) under the ABL Agreement. 
 (b) Section 9.5(a) of the Intercreditor Agreement is
hereby amended and restated in its entirety as follows: 
 “(a) No amendment or modification of any of the provisions of
this Agreement shall be effective unless the same shall be in writing and signed by the ABL Representative and the Term Loan Representative. Each Grantor agrees that this Agreement may be amended or modified by the ABL Representative and the Term
Loan Representative without notice to, or the consent of, any Grantor, provided that (i) no amendment or modification (A) to decrease the ABL Cap Amount or expand the types of Capped ABL Obligations, or to decrease of the Term Cap
Amount or expand the types of Capped Term Obligations or (B) to the definition of Eligible Pledged Cash Account (or any provision of the definitions of ABL Facility First Priority Collateral or Term Loan Priority Collateral relating to Eligible
Pledged Cash Accounts) may, in 

  
 2 

 
either case, be made without the prior written consent of the Parent and (ii) no Grantor shall be bound by any such amendment or modification that directly and adversely affects the rights
or duties of such Grantor in any material respect.” 
 SECTION 3. Effect of this Agreement. (iv) Except as expressly set forth
herein, this Agreement shall not by implication or otherwise limit, impair, constitute a waiver of, or otherwise affect the rights and remedies of the ABL Representative or the Term Loan Representative under the Intercreditor Agreement or any of the
ABL Documents or the Term Loan Documents, and shall not alter, modify, amend or in any way affect any of the terms, conditions, obligations, covenants or agreements contained in the Intercreditor Agreement or any of the ABL Documents or the Term
Loan Documents, all of which are ratified and affirmed in all respects and shall continue in full force and effect. Nothing herein shall be deemed to entitle any party to the Intercreditor Agreement to a consent to, or a waiver, amendment,
modification or other change of, any of the terms, conditions, obligations, covenants or agreements contained in the Intercreditor Agreement in similar or different circumstances. 

(b) On and after the date hereof, each reference in the Intercreditor Agreement to “this Agreement”, “hereunder”,
“hereof”, “herein” or words of like import, and each reference to the Intercreditor Agreement in any ABL Document or any Term Loan Document, shall be deemed to be a reference to the Intercreditor Agreement as amended hereby. 

SECTION 4. Counterparts. This Agreement may be executed in counterparts (and by different parties hereto on different counterparts),
each of which shall constitute an original, but all of which when taken together shall constitute a single contract. Delivery of an executed counterpart of a signature page of this Agreement by facsimile transmission or other electronic imaging
shall be as effective as delivery of a manually executed counterpart of this Agreement. 
 SECTION 5. Governing Law. This Agreement
shall be construed in accordance with and governed by the law of the State of New York, except as otherwise required by mandatory provisions of law and except to the extent that remedies provided by the laws of any jurisdiction other than the State
of New York are governed by the laws of such jurisdiction. 
 SECTION 6. Heading. Section headings used herein are for convenience of
reference only, are not part of this Agreement and shall not affect the construction of, or be taken into consideration in interpreting, this Agreement. 

SECTION 7. Incorporation by Reference. The provisions of Sections 9.8 and 9.10 of the Intercreditor Agreement are hereby incorporated
by reference, mutatis mutandis, as if set forth in full herein. 
 [Signature pages follow.] 

  
 3 

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed by their
respective authorized officers as of the day and year first above written. 
  

			
	BANK OF AMERICA, N.A., as the ABL Representative for and on behalf of the ABL Secured Parties,
		
	    by	 	 
		 	Name:
		 	Title:

  
 4 

 
			
	JPMORGAN CHASE BANK, N.A., as the Term Loan Representative for and on behalf of the Term Loan Secured Parties,
		
	    by	 	 
		 	Name:
		 	Title:

  
 5 

 WILLBROS GROUP, INC. 

WILLBROS UNITED STATES HOLDINGS, INC. 

WILLBROS GOVERNMENT SERVICES (U.S.), LLC 

WILLBROS CONSTRUCTION (U.S.), LLC 

WILLBROS ENGINEERS (U.S.), LLC 

WILLBROS ENGINEERING CALIFORNIA (U.S.), INC. 

WILLBROS MIDSTREAM SERVICES (U.S.), LLC 

WILLBROS PROJECT SERVICES (U.S.), LLC 

WILLBROS DOWNSTREAM, LLC 
 WILLBROS
WEST COAST SERVICES, INC. 
 CONSTRUCTION TANK SERVICES LLC 

WILLBROS UTILITY T&D HOLDINGS, LLC 

WILLBROS T&D SERVICES, LLC 

CHAPMAN CONSTRUCTION MANAGEMENT CO., INC. 

CHAPMAN CONSTRUCTION CO., L.P. 

WILLBROS UTILITY T&D GROUP COMMON PAYMASTER, LLC 

BEMIS, LLC 
 WILLBROS UTILITY T&D
OF MASSACHUSETTS, LLC 
 WILLBROS UTILITY T&D OF NEW YORK, LLC 

LINEAL INDUSTRIES, INC. 
 SKIBECK
PIPELINE COMPANY, INC. 
 TRAFFORD CORPORATION 

			
		
	by:	 	 
	Name:	 	
	Title:	 	

  
 6 

 EXHIBIT B 

[Second Amendment to Credit Agreement is attached as Exhibit 10.1 to this Form 8-K.]

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