Document:

Exhibit 4.3

Exhibit 4.3

AMENDMENT TO CONSENT AGREEMENT

This
AMENDMENT TO CONSENT AGREEMENT (this “Amendment”) is made and entered into this _______ day of
May, 2010, by and between Willbros Group, Inc., a Delaware corporation (the “Company”), and
                                         (the “Consenting Holder”).

WHEREAS, on March 10, 2010, the Company entered into a Consent Agreement with the Consenting
Holder and with other Consenting Holders who, as of that date, collectively held a majority of the
$32,050,000 in aggregate principal amount outstanding of the Company’s 6.5% Convertible Senior
Notes due 2012 (the “Notes”) that were duly issued by the Company pursuant to an Indenture dated as
of December 23, 2005, between the Company, Willbros United States Holdings, Inc., a Delaware
corporation formerly known as Willbros USA, Inc. and Bank of Texas, N.A., a Texas banking
corporation, as successor Trustee, as amended and modified by (1) that certain First Supplemental
Indenture dated as of November 2, 2007, (2) that certain Second Supplemental Indenture dated as of
March 3, 2009 (such indenture as so supplemented, the “Indenture”); and

WHEREAS, pursuant to the Consent Agreement, the Consenting Holder (a) consented to the
modifications and amendments to the Indenture in the form attached thereto (the “Original Third
Supplemental Indenture”), which, among other things, contemplated an amendment to Section 6.13 of
the Indenture allowing the Company to incur indebtedness under a new credit agreement for a credit
facility, and (b) agreed to execute and deliver any additional documents deemed by the Company to
be necessary or desirable to properly deliver the Consenting Holder’s consent; and

WHEREAS, subsequent to the execution of the Consent Agreement, it appears that the Company and
the Consenting Holder would benefit if the Indenture were modified in order to clarify that the
Company may incur indebtedness in the form of a combination of credit agreement indebtedness,
and/or a new series of notes or bonds pursuant to an indenture; and

WHEREAS, the Consenting Holder is willing to consent to the modification of certain provisions
of the Indenture substantially as set forth in the form of Third Supplemental Indenture attached
hereto as Annex I (the “Modified Third Supplemental Indenture”);

 

 

 

NOW, THEREFORE, in consideration of the recitals and mutual covenants set forth or described
herein, and for good and valuable consideration, the receipt of which is hereby acknowledged, the
parties hereto, intending to be legally bound, hereby agree as follows:

1. The Consenting Holder acknowledges that it is hereby giving its consent to the modifications and
amendments to the Indenture substantially in the form and substance as set forth in the form of
Modified Third Supplemental Indenture, attached hereto as Annex
I and with such changes thereto as the Trustee may reasonably require, with respect to the entire
principal amount of Notes held by such Consenting Holder as of the date of the Consent Agreement.
The Consenting Holder will execute and deliver any additional documents deemed by the Company to be
necessary or desirable to properly deliver the Consenting Holder’s consent.

2. This Amendment shall become valid and binding upon the Consenting Holder, and shall not be
revocable by the Consenting Holder, upon (i) delivery of this Amendment and other substantially
similar agreements, executed by the holders of Notes representing a majority in principal amount of
the Notes outstanding as of the date of the Consent Agreement, to the Company and (ii) delivery of
such agreements, executed by the Company, to such holders.

3. This Amendment shall be governed by, and construed in accordance with the laws of the state of
New York (without regard to conflicts of laws principles thereof). EACH PARTY HEREBY IRREVOCABLY
WAIVES ANY RIGHT IT MAY HAVE, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY
DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS AMENDMENT OR ANY TRANSACTION
CONTEMPLATED HEREBY.

4. Except as specifically set forth in this Amendment, the Consent Agreement shall continue in full
force and effect in accordance with its terms.

5. This Amendment may be executed in any number of counterparts, each of which shall be an
original; but such counterparts shall together constitute but one and the same instrument.

[signatures on following page]

 

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This Amendment has been executed and delivered as of the date first above written.

	 	 	 	 	 
	 	 
 	 
	 	By:  	 	 
	 	 	Name:  	 	 
	 	 	Title:  	Authorized Signatory 	 

	 	 	 	 	 
	 	WILLBROS GROUP, INC.

 	 
	 	By:  	 	 
	 	 	Name:  	Van A. Welch 	 
	 	 	Title:  	Senior Vice President and

Chief Financial Officer 	 

 

3

 

	 	 	 	 	 

Annex I

THIRD SUPPLEMENTAL INDENTURE

AMONG

WILLBROS GROUP, INC., a Delaware Corporation

WILLBROS UNITED STATES HOLDINGS, INC., a Delaware Corporation

formerly known as Willbros USA, Inc.

AND

BANK OF TEXAS, N.A.

As Trustee

DATED AS OF MAY _______, 2010

TO THE INDENTURE FOR

6.5% CONVERTIBLE SENIOR NOTES DUE 2012

DATED AS OF DECEMBER 23, 2005

 

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THIRD SUPPLEMENTAL INDENTURE

THIRD SUPPLEMENTAL INDENTURE, dated as of May _______, 2010 (the “Effective Date”), among Willbros
Group, Inc., a Delaware corporation (the “Company”), Willbros United States Holdings, Inc., a
Delaware corporation formerly known as Willbros USA, Inc. (the “Guarantor”), and Bank of Texas,
N.A. (the “Trustee”), as successor in interest to The Bank of New York Mellon (formerly known as
The Bank of New York).

WHEREAS, Willbros Group, Inc., a Republic of Panama corporation (“Willbros Panama”), has
heretofore executed and delivered to the Trustee an indenture, dated as of December 23, 2005, as
supplemented by the First Supplemental Indenture thereto, dated as of November 2, 2007 (the “First
Supplemental Indenture”) and the Second Supplemental Indenture thereto, dated as of March 3, 2009
(the “Second Supplemental Indenture,” and such indenture as so supplemented by the First
Supplemental Indenture and the Second Supplemental Indenture, the “Indenture”), pursuant to which
Willbros Panama has duly issued 6.5% Convertible Senior Notes due 2012 (the “Notes”) in the
aggregate principal amount of $84,500,000, of which $32,050,000 in aggregate principal amount of
the Notes are outstanding as of the Effective Date; and

WHEREAS, pursuant to the Agreement and Plan of Merger dated as of December 10, 2008 (the
“Merger Agreement”) among the Company, Willbros Panama and Willbros Merger, Inc., a Delaware
corporation and a wholly owned subsidiary of the Company (“Sub”), on March 3, 2009 Sub merged with
and into the Willbros Panama (the “Merger”), with Willbros Panama being the surviving corporation
in the Merger, following which Willbros Panama became a direct, wholly owned subsidiary of the
Company; and

WHEREAS, pursuant to the Second Supplemental Indenture, the Company assumed all obligations of
Willbros Panama under the Indenture and the Notes; and

WHEREAS, the Company has received consents to certain amendments to the Indenture as described
herein from Holders representing in excess of a majority in aggregate principal amount of the
outstanding Notes as of the date hereof; and

WHEREAS, pursuant to the first subparagraph of Section 11.2 of the Indenture, the Indenture
may be amended with the consent or affirmative vote of the Holders of at least a majority of the
principal amount of the Notes at that time outstanding so long as the amendment does not fall under
subparagraphs (a) through (l) of Section 11.2; and

WHEREAS, the amendment effected by this Third Supplemental Indenture does not fall within
subparagraphs (a) through (l) of Section 11.2; and

WHEREAS, pursuant to Section 11.7 of the Indenture, upon the execution of this Third
Supplemental Indenture by the Company and the Trustee, the Indenture shall be modified in
accordance herewith, and this Third Supplemental Indenture shall form a part of the Indenture for
all purposes and every Holder of the Notes shall be bound hereby.

 

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NOW, THEREFORE, the parties hereto agree as follows:

ARTICLE ONE

PROVISIONS OF GENERAL APPLICATION

SECTION 1.01. Applicability of Amendments. This Third Supplemental Indenture with respect to
the Notes is effective as of the Effective Date.

SECTION 1.02. Definitions. All capitalized terms which are used herein and not otherwise
defined herein are defined in the Indenture and are used herein with the same meanings as in the
Indenture. If a capitalized term is defined in the Indenture and this Supplemental Indenture, the
definition in this Supplemental Indenture shall apply to the Indenture and the Notes.

SECTION 1.03. Provisions of the Indenture. Except insofar as herein otherwise expressly
provided, all the definitions, provisions, terms and conditions of the Indenture shall remain in
full force and effect. The Indenture as modified by this Third Supplemental Indenture is in all
respects ratified and confirmed, and the Indenture and this Third Supplemental Indenture shall be
read, taken and considered as one and the same instrument for all purposes and every Holder of
Notes authenticated and delivered under the Indenture shall be bound hereby. The provisions of
this Third Supplemental Indenture shall, subject to the terms hereof, supersede the provisions of
the Indenture to the extent the Indenture is inconsistent herewith.

ARTICLE TWO

AMENDMENTS TO THE INDENTURE

SECTION 2.01. Amendments to Section 6.1.

Section 6.1 is hereby amended and restated in its entirety to read as follows:

“Section 6.1 Payment of Notes.

The Company shall pay interest on the Notes as provided in the Notes and this Indenture. The
Company shall promptly make all payments in respect of the Notes on the dates and in the manner
provided in the Notes or pursuant to this Indenture. Principal Amount, Purchase Price and
Fundamental Change Purchase Price and accrued and unpaid interest, Special Interest, Additional
Amounts and Additional Interest, if any, shall be considered paid on the applicable date due if by
11:00 a.m., New York City time, on such date the Paying Agent holds, in accordance with this
Indenture, cash or securities, if permitted hereunder, sufficient to pay all such amounts then due.
The Company shall, to the fullest extent permitted by law, pay interest on overdue principal and
overdue installments of interest, Special Interest, Additional Amounts and Additional Interest, if
any, at the rate borne by the Notes per annum plus 1%. All references in this Indenture or the
Notes to interest shall, without duplication, be deemed to include Special
Interest, Additional Amounts and Additional Interest, if any, payable pursuant to the
Registration Rights Agreement.

 

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If at any time Additional Interest becomes payable by the Company pursuant to the Registration
Rights Agreement, the Company shall promptly deliver to the Trustee a certificate to that effect
and stating (i) the amount of such Additional Interest that is payable and (ii) the date on which
such Additional Interest is payable pursuant to the terms of the Registration Rights Agreement.
Unless and until a Responsible Officer of the Trustee receives such a certificate, the Trustee may
assume without inquiry that no Additional Interest is payable. If the Company has paid Additional
Interest directly to the Persons entitled to it, the Company shall deliver to the Trustee a
certificate setting forth the particulars of such payment.

Each payment of the principal of and interest, Special Interest, Additional Amounts and
Additional Interest, if any, on the Notes due in cash shall be in such coin or currency of the
United States of America as at the time of payment is legal tender for payment of public and
private debts.

Subject to Section 4.1 and Section 5.1, the Company shall pay interest, Additional Amounts and
Additional Interest, if any, on the Notes to the Person in whose name the Notes are registered at
the close of business on the Regular Record Date next preceding the corresponding Interest Payment
Date. Any such interest, Additional Amounts and Additional Interest, if any, not so punctually
paid or duly provided for shall forthwith cease to be payable to the Holder on such Regular Record
Date and may be paid (a) to the Person in whose name the Notes are registered at the close of
business on a Special Record Date for the payment of such defaulted interest, Additional Amounts
and Additional Interest, if any, to be fixed by the Trustee, notice whereof shall be given to the
Holders not less than 10 calendar days prior to such Special Record Date or (b) at any time in any
other lawful manner not inconsistent with the requirements of any securities exchange on which the
Notes may be listed, and upon such notice as may be required by such exchange.

In addition to any other payment required by the Notes and this Indenture, the Company shall
make a one-time payment (a “Special Interest Payment”), as special interest (“Special Interest”),
in an amount equal to 4% of the principal amount of the Notes outstanding as of the Special
Interest Record Date. The Special Interest Payment shall be paid to the Person in whose name the
Notes are registered at the close of business on a special interest payment record date (“Special
Interest Payment Record Date”) for the payment of such Special Interest, which shall be four
business days after the Acquisition Date. The Special Interest Payment shall be payable five
business days after the completion of the Company’s acquisition of InfrastruX Group, Inc. (the
“Acquisition Date”). On or prior to the Acquisition Date, the Company shall deliver to the Trustee
a certificate stating the amount of Special Interest that is payable pursuant to this Section 6.1
and the date on which Special Interest is payable.

 

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The Holder must surrender the Notes to the Paying Agent to collect payment of principal.
Payment of cash interest, Additional Amounts and Additional Interest, if any, on Certificated
Securities in the aggregate principal amount of $5,000,000 or less shall be made by check mailed to
the address of the Person entitled thereto as such address appears in the Register, and payment
of cash interest, Additional Amounts and Additional Interest, if any, on Certificated
Securities in aggregate principal amount in excess of $5,000,000 shall be made by wire transfer in
immediately available funds at the election of such Holder. Notwithstanding the foregoing, so long
as the Notes are registered in the name of a Depositary or its nominee, all payments with respect
to the Notes shall be made by wire transfer of immediately available funds to the account of the
Depositary or its nominee. At the Stated Maturity, interest, Additional Amounts and Additional
Interest, if any, on Certificated Securities will be payable at the office or agency of the Company
described in Section 6.5.

SECTION 2.02. Amendment to Section 6.13.

The first paragraph of Section 6.13 is hereby amended and restated in its entirety to
read as follows:

“The Company will not, and will not permit any of its Subsidiaries to, Incur
any Indebtedness (other than Permitted Indebtedness) (a) unless such Indebtedness
(other than Credit Agreement Indebtedness) (i) matures after the Stated Maturity,
(ii) is expressly subordinated to the Indebtedness evidenced by the Securities in
right of payment, whether in respect of payment of interest or upon liquidation or
dissolution or otherwise, upon commercially reasonable terms that are no less
favorable than the terms set forth in ARTICLE XIII hereof, (iii) does not require or
permit at any time for the prepayment, repayment, repurchase or defeasance, directly
or indirectly, of any principal or premium, if any, thereon until ninety-one (91)
days after the Stated Maturity or later, and (iv) does not provide for total
interest and fees in excess of 10.0% per annum and (b) if the Incurrence of such
Indebtedness (including, without limitation, Credit Agreement Indebtedness) would
cause the Consolidated Leverage Ratio to exceed 4.00:1.00. The preceding sentence
shall not be applicable to the Incurrence of Indebtedness by the Company or any of
its Subsidiaries in connection with the Company’s acquisition of InfrastruX Group,
Inc. in an aggregate amount not to exceed $300 million in the form of a term loan
pursuant to a credit agreement for a credit facility and/or a new series of notes or
bonds pursuant to an indenture, provided that any credit agreement for a credit
facility to be entered into in connection therewith may not include loan commitments
in an amount greater than $500 million less the amount of any notes or bonds issued
under the indenture. For the avoidance of doubt, (i) with respect to any business
or company which the Company may acquire, for purposes of determining compliance
with the Consolidated Leverage Ratio test in this Section 6.13, Consolidated EBITDA
shall be calculated pro forma (without duplication) as if the acquired company or
business had been owned during the entire four quarter period, on the basis of (x)
the historical financial statements of any company or business so acquired, and (y)
the assumption that the consolidated financial statements of the Company and its
Subsidiaries have been reformulated as if such acquisition had been consummated at
the beginning of the relevant four quarter period, (ii) in no event shall the
Company’s settlement agreements with the SEC and the Department of Justice or the
obligations of the Company and its Subsidiaries thereunder

 

A-5

 

be
considered Indebtedness or Consolidated Funded Indebtedness and (iii) upon its
execution by the Company, the credit agreement entered into in connection with the
Company’s acquisition of InfrastruX Group, Inc, as the same may be amended,
supplemented, restated or otherwise modified from time to time, shall constitute the
“Credit Agreement” for all purposes of the Indenture (including Section 6.12 and
this 6.13), as shall any indentures, credit agreements or commercial paper
facilities, in each case as the same may be amended, supplemented, restated or
otherwise modified from time to time, that extend, renew, replace or refinance any
part of the loans, notes, credit facilities or commitments under such credit
agreement (or any such extension, renewal, replacement or refinancing thereof),
whether or not any of the foregoing increases the amount borrowable thereunder and
whether by the same or any other agent, lender, group of lenders or investors;
provided that the Company may not Incur any Indebtedness thereunder if the
Incurrence of such Indebtedness would cause the Consolidated Leverage Ratio to
exceed 4.00:1.00. For purposes of this Section 6.13, whenever pro forma effect is
to be given to an acquisition of a company or business by the Company, including the
pro forma Consolidated EBITDA relating thereto, the pro forma calculations shall be
determined in accordance with GAAP and Regulation S-X. Notwithstanding the
foregoing, this Section 6.13 shall not prohibit the Incurrence of the following
Indebtedness (collectively, “Permitted Indebtedness”):”

ARTICLE THREE

MISCELLANEOUS PROVISIONS

SECTION 3.01. Integral Part. This Supplemental Indenture constitutes an integral part of the
Indenture.

SECTION 3.02. Trust Indenture Act Controls. If any provision of this Third Supplemental
Indenture limits, qualifies or conflicts with another provision which is required to be included in
this Third Supplemental Indenture by the TIA, the required provision shall control. If any
provision of this Third Supplemental Indenture modifies any TIA provision that may be so modified,
such TIA provision shall be deemed to apply to this Third Supplemental Indenture as so modified. If
any provision of this Third Supplemental Indenture excludes any TIA provision that may be so
excluded, such TIA provision shall be excluded from this Third Supplemental Indenture.

SECTION 3.03. Governing Law. THIS THIRD SUPPLEMENTAL INDENTURE SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

 

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SECTION 3.04. Severability. In case any provision in this Third Supplemental Indenture shall
be invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining
provisions shall, to the fullest extent permitted by applicable law, not in any way be affected or
impaired thereby.

SECTION 3.05. Counterpart Originals. The parties may sign any number of copies of this Third
Supplemental Indenture. Each signed copy shall be an original, but all of them together represent
the same agreement.

SECTION 3.06. Successors. All agreements of the Company or the Guarantor in this Third
Supplemental Indenture shall bind their respective successors. All agreements of the Trustee in
this Third Supplemental Indenture shall bind its successors.

SECTION 3.07. Headings. The headings of the Articles and Sections of this Third Supplemental
Indenture have been inserted for convenience of reference only, are not to be considered a part
hereof and shall in no way modify or restrict any of the terms or provisions hereof.

SECTION 3.08. Benefit of Third Supplemental Indenture. Nothing in this Third Supplemental
Indenture, express or implied, shall give to any Person, other than the parties hereto, any
Registrar, any Paying Agent and their successors hereunder, and the Holders of Securities, any
benefit or any legal or equitable right, remedy or claim under this Third Supplemental Indenture.

SECTION 3.09. Acceptance by Trustee. The Trustee accepts the amendments to the Indenture
effected by this Third Supplemental Indenture and agrees to execute the trusts created by the
Indenture as hereby amended, but only upon the terms and conditions set forth in this Third
Supplemental Indenture and the Indenture. Without limiting the generality of the foregoing, the
Trustee assumes no responsibility for the correctness of the recitals contained herein, which shall
be taken as the statements of the Company and the Guarantor and except as provided in the
Indenture, the Trustee shall not be responsible or accountable in any way whatsoever for or with
respect to the validity or execution or sufficiency of this Third Supplemental Indenture and the
Trustee makes no representation with respect thereto.
All rights, protections, privileges, indemnities and benefits granted or afforded to the Trustee
under the TIA or the Indenture shall be deemed incorporated herein by this reference and shall be
deemed applicable to all actions taken, suffered or omitted by the Trustee under this Third
Supplemental Indenture.

[signatures on following page]

 

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IN WITNESS WHEREOF, the parties hereto have caused this Third Supplemental Indenture to be
duly executed and attested, all as of the date first written above.

	 	 	 	 	 
	 	WILLBROS GROUP, INC.

 	 
	 	By:  	 	 
	 	 	Name:  	Van A. Welch 	 
	 	 	Title:  	Senior Vice President and

Chief Financial Officer 	 
	 
	 	WILLBROS UNITED STATES HOLDINGS, INC.,

as Guarantor

 	 
	 	By:  	 	 
	 	 	Name:  	Van A. Welch 	 
	 	 	Title:  	Senior Vice President and

Chief Financial Officer 	 
	 
	 	BANK OF TEXAS, N.A., as Trustee

 	 
	 	By:  	 	 
	 	 	Name:  	Ronda L. Parman 	 
	 	 	Title:  	Vice President 	 

 

A-8Exhibit 10.1

EXHIBIT 10.1

AMENDMENT NO. 1

TO

AMENDED AND RESTATED

EMPLOYMENT AGREEMENT

This Amendment No. 1 to Amended and Restated Employment Agreement (this “Amendment”) is made
and entered into as of the 23rd day of March, 2010, by and between Willbros United States Holdings,
Inc. (formerly known as Willbros USA, Inc.), a Delaware corporation (the “Corporation”), and Robert
R. Harl (the “Executive”).

RECITALS

A. Effective as of December 31, 2008, the Corporation and the Executive entered into that
certain Amended and Restated Employment Agreement (the “Agreement”).

B. The Corporation and the Executive desire to amend the Agreement in certain respects, as set
forth in this Amendment.

C. Terms used in this Amendment shall have the same meanings as in the Agreement, unless
otherwise defined herein.

Now, therefore, in consideration of the premises, the mutual covenants contained herein and
the mutual benefits derived therefrom, the Corporation and the Executive hereby agree as follows:

1. Effective as of the date of this Amendment, the first sentence of Section 1.2(a) of the
Agreement is hereby amended so as to read in its entirety as follows:

“For the remainder of the Employment Period, the Corporation shall pay the
Executive a base salary of nine hundred thousand dollars ($900,000).”

2. Except as specifically set forth herein, the Agreement shall continue in full force and
effect in accordance with its terms.

3. The provisions of this Amendment shall be construed and enforced in accordance with the
laws of the State of Texas, without regard to any otherwise applicable principles of conflicts of
laws.

In witness whereof, the Corporation and the Executive have executed and delivered this
Amendment as of the date first above written.

	 	 	 	 	 	 	 
	 	 	Willbros United States Holdings, Inc.	 	 
	 	 	(formerly Willbros USA, Inc.)	 	 
	 
	 	 	 	 	 	 
	/s/ Robert R. Harl
 

Robert R. Harl

	 	By:
	 	/s/ Gordon Hagendorf
 

Name: Gordon Hagendorf
	 	 
	 

	 	 	 	Title:   VP Human Resources

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