EX-10.1



 Exhibit 10.1 

EXECUTION COPY 

AMENDED AND RESTATED EMPLOYMENT AGREEMENT 

This AMENDED AND RESTATED EMPLOYMENT AGREEMENT (the “Agreement”) is made as of the 8th day of May, 2014 (the
“Agreement Date”), by and between Great Lakes Dredge & Dock Corporation (the “Corporation”), with and on behalf of its wholly-owned subsidiary, Great Lakes Dredge & Dock Company, LLC (“GLDD
LLC”) (together, the “Company”), and Jonathan W. Berger (“Executive”). 
 RECITALS

 WHEREAS, Executive is currently employed by the Company in the position of Chief Executive Officer; 

WHEREAS, Executive and the Company have previously agreed to and operated under the terms of an employment agreement dated
September 7, 2010 (the “Original Agreement”); and 
 WHEREAS, in consideration of the vesting and
exercisability of Non-Qualified Stock Option Agreement, the Restricted Stock Unit Award Agreement, and the Performance Vesting RSU Award Agreement granted to Executive on May 9, 2014, Executive and the Company agree to amend and restate
the Original Agreement in its entirety by setting forth the terms and conditions of their agreements and understandings in this Agreement, which shall replace and supersede all terms and conditions contained within the Original Agreement as of the
date first written above. 
 NOW, THEREFORE, in consideration of the foregoing promises and the respective agreements
of Executive and the Company set forth below, Executive and the Company, intending to be legally bound, agree as follows: 

ARTICLE I 
 EMPLOYMENT
SERVICES 
 1.1 Term of Employment. Executive’s employment under this Agreement shall commence on September 7,
2010 (the “Start Date”) and continue until the third annual anniversary of such date, unless terminated earlier pursuant to Article III herein (the “Initial Employment Term”). The Employment Term shall
be extended automatically for successive one-year periods unless, at least 90 days prior to expiration of the Employment Term, either party gives written notice to the other party that he/it does not wish to renew the Agreement (such one year
extension(s) and the Initial Employment Term to be, collectively, the “Employment Term”). 
 1.2 Position and Duties.
During the Employment Term, Executive shall hold the position of Chief Executive Officer, and shall report to the Corporation’s Board of Directors (the “Board”). Executive shall perform such duties and responsibilities as are
consistent with Executive’s position and as may be reasonably assigned to Executive by the Board from time to time. Executive shall devote Executive’s full business time, attention, skill and energy to the business and affairs of the
Company, and shall use Executive’s reasonable best efforts to perform such responsibilities in a diligent, loyal, and businesslike manner so as to advance the best 







 
interests of the Company. Executive shall act in conformity with Company’s written and oral policies and within the limits, budgets and business plans set by the Company, and shall adhere to
all rules and regulations in effect from time to time relating to the conduct of executives of the Company. Executive’s office will be at the principal executive offices of the Company in Oak Brook, IL and Executive will be expected to conduct
his activities from such office other than when traveling on behalf of the Company. Notwithstanding the foregoing, Executive shall be permitted to devote a reasonable amount of time and effort to civic and charitable organizations and managing
personal investments; but only to the extent that such activities, individually or as a whole, do not materially interfere with the execution of Executive’s duties hereunder, or otherwise violate any provision of this Agreement. Executive shall
not become involved in the management of any corporation, partnership or other entity, including serving on the board of directors of any publicly traded company, other than Boise Inc., without the written consent of the Board. 

1.3 Service on Board. During the Employment Term, the Board will nominate Executive for election as a member of the Board and, at
the expiration of each then-current term, re-election as a member of the Board. Executive will serve without additional compensation as a member of the Board and as an officer and director of any of the Corporation’s subsidiaries. Any
compensation or other remuneration received from such service may be offset against the amounts due hereunder. 
 ARTICLE II 

COMPENSATION 
 2.1
Base Salary. The Company shall pay Executive an annual base salary (“Base Salary”) of $575,000, payable in accordance with the general payroll practices of the Company. The Board may, in its sole discretion, increase
Executive’s Base Salary, or decrease it by up to 10 percent if there is a salary reduction affecting substantially all executive or managerial employees of the Company.  

2.2 Incentive Compensation. Executive will be eligible to participate in any annual performance bonus plans and long-term
incentive plans established or maintained by the Company for its senior executive officers, including, but not limited to, the Annual Cash Bonus Plan or such similar or successor plans as the Company may establish. The maximum annual incentive
compensation Executive may earn each year is $550,000, unless such amount is adjusted by the Compensation Committee of the Board of Directors of the Company in its sole discretion. Fifty percent of any annual bonus earned by Executive will be paid
in shares of the Company’s common stock; the remainder (and the value of any fractional shares) will be paid to Executive in cash. Such bonus will be paid in accordance with the Company’s standard practice, but in any event no later than
2.5 months after the end of the calendar year in which Executive earns such bonus. 
 2.3 Equity Compensation. Executive will
be eligible to participate in any equity-based compensation plans established or maintained by the Company for its senior executive officers, including but not limited to the Company’s 2007 Long-Term Incentive Plan and any successor thereto.


  
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 2.4 Employee Benefit Plans. Executive will be eligible to participate on
substantially the same basis as the Company’s other senior executive officers in any employee benefit plans offered by the Company including, without limitation, the Company’s Supplemental Savings Plan (or any successor thereto), medical,
dental, short-term and long-term disability, life, pension, profit sharing and nonqualified deferred compensation arrangements. The Company reserves the right to modify, suspend or discontinue any and all of the plans, practices, policies and
programs at any time without recourse by Executive, so long as Company takes such action generally with respect to other similarly situated senior executive officers. 

2.5 Vacation. Executive will be entitled to four (4) weeks of paid vacation per calendar year, subject to the Company’s
vacation policy as in effect from time-to-time. The Company may, at its discretion, increase (but not decrease) Executive’s vacation entitlement. 

2.6 Business Expenses. The Company will reimburse Executive for all reasonable and necessary business expenses incurred in the
performance of services with the Company, according to the Company’s policies and upon Executive’s presentation of an itemized written statement and such verification as the Company may require. 

ARTICLE III 
 TERMINATION
OF EMPLOYMENT 
 3.1 Voluntary Resignation. Executive may terminate his employment for any reason by giving the Company 90
days’ prior written notice of a voluntary resignation date (“Resignation Date”). Upon receiving Executive’s notice of intent to resign, the Company may require that Executive cease performing services for the Company at
any time before the Resignation Date, so long as the Company continues Executive’s Base Salary under Section 2.1 and employee benefits under Section 2.4 through the Resignation Date. Except as otherwise provided under
law or the terms of any employee benefit plans in which Executive participates, Executive shall not be entitled to receive any compensation or benefits from the Company after the Resignation Date. 

3.2 Termination By Company With Cause. The Company may terminate Executive’s employment for Cause (as defined below) by
giving written notice to Executive designating an immediate or future termination date. In the event of a termination for Cause, the Company shall pay Executive his Base Salary under Section 2.1 and employee benefits under
Section 2.4 through the termination date. Except as otherwise provided under law or the terms of any employee benefit plans in which Executive participates, Executive shall not be entitled to receive any compensation or benefits from the
Company after the termination date. 
 For purposes of this Agreement, “Cause” means: (a) Executive materially breaches
Executive’s obligations under this Agreement or an established policy of the Company; (b) Executive commits an act constituting a felony or engages in unethical or immoral conduct that, in the reasonable judgment of the Board, could injure
the integrity, character or reputation of the Company; (c) Executive fails, refuses or is unable to perform, or habitually neglects, Executive’s duties and responsibilities hereunder, and continues such failure, refusal, inability or
neglect after having been given written notice by the Company that specifies what duties Executive failed to perform and an opportunity to cure of 15 days; (d) Executive commits an act of material


  
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dishonesty, misconduct or fraud in connection with his job duties, or otherwise violates a fiduciary duty to the Company; or (e) Executive fails to reasonably cooperate with any audit or
investigation involving the Company or its business practices after having been given written notice by the Company that specifies Executive’s failure to cooperate and an opportunity to cure of 15 days. 

3.3 Termination By Company Without Cause. The Company may terminate Executive’s employment without Cause by giving written
notice to Executive designating an immediate or future termination date. Executive’s voluntary resignation of employment due to a material diminution of Executive’s authority, duties or responsibilities shall be treated as a termination by
Company without Cause; provided that, (a) such voluntary resignation occurs within 150 days following the initial occurrence of such diminution, (b) Executive provided written notice of such diminution to the Board within 90 days of
such diminution, and (c) the Company failed to cure such diminution within 30 days of receipt of such written notice from Executive. 

In the event of a termination without Cause, Executive shall receive from the Company his Base Salary under Section 2.1 and
employee benefits under Section 2.4 through the termination date, and shall be eligible to receive the benefits described in Sections 3.3(a), (b), and (c) below (collectively, “Severance
Pay”), subject to the requirements set forth in Section 3.6 and Section 3.7. The period over which the amounts in Section 3.3(a), (b)(i) or (b)(ii), as applicable, are payable is referred to as the
“Severance Period.”  
 (a) [INTENTIONALLY DELETED.] 

(b) If Executive is terminated without Cause after the first six months of the Initial Employment Term, the Company will provide the following
compensation and benefits to Executive: 
 (i) If at least 12 full months remain in the Employment Term, a payment of equal
to 18 months of Executive’s then current Base Salary, less applicable withholdings. This amount will be paid in equal installments on each regularly scheduled payroll pay date during the 18-month period that begins on the first day immediately
after the Release Effective Date, as described in Section 3.6. 
 (ii) If fewer than 12 full months remain in the
Employment Term, a payment equal to 12 months of Executive’s Base Salary, less applicable withholdings. This amount will be paid in equal installments on each regularly scheduled payroll pay date during the 12-month period that begins on the
first day immediately after the Release Effective Date, as described in Section 3.6. 
 (iii) The pro rata portion of
the annual bonus and the Supplemental Savings Plan benefits earned through the termination date. Such amount will be paid when all other Company executives receive such payments, but in no event later than March 15 of the year following the
termination date. 

  
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 (iv) Continued coverage for Executive (and his spouse and eligible dependents, to
the extent they have been provided with coverage on the date immediately prior to the termination date and otherwise continue to be eligible for coverage under the terms of the applicable governing documents) under the Company’s medical and
dental plans for up to 24 months following the termination date. During this 24-month period, the Company will reduce Executive’s cash Severance Pay by his share of the cost of these benefits, which is fixed at the amount Executive had been
paying for such coverage on the date immediately prior to the termination date. After this 24-month period, Executive (and his spouse and eligible dependents, as applicable) will be eligible for continuation coverage under COBRA or other similar
state statute. Notwithstanding the foregoing, the Company may find alternate medical and dental plan coverage if, by law or other restrictions outside the control of the Company, continued coverage under the Company’s health plans is not
permitted. 
 (c) If Executive is terminated without Cause, Executive will receive the following vesting credit for any unvested equity
awards measured from the date of Executive’s termination of employment: 
 (i) If Section 3.3(b)(i) applies,
eighteen (18) months of vesting credit; or 
 (ii) If Section 3.3(b)(ii) applies, twelve (12) months of
vesting credit. 
 Except as otherwise provided under law or the terms of any employee benefit plans in which Executive participates,
Executive shall not be entitled to receive any additional compensation or benefits from the Company after the termination date. For the avoidance of doubt, Executive shall not be eligible for Severance Pay if his employment ends because the Company
or Executive provides notice of nonrenewal of the Employment Term pursuant to Section 1.1. 
 3.4 Change in
Control. If, contemporaneous with or within twenty-four (24) months after a Change in Control (as defined below), the Company terminates Executive’s employment other than for Cause, Executive will be eligible to receive, in lieu of
those payments provided under Sections 3.3(a), (b)(i) or (b)(ii), as applicable: (a) 2 times the sum of his then current Base Salary plus the average of Executive’s actual annual bonus over the three (3) year period
immediately preceding Executive’s termination and (b) the pro rata portion of the annual bonus and the Supplemental Savings Plan benefits earned through the termination date as described in Section 3.3(b)(iii) (together, the
“Change in Control Payment”), subject to the requirements set forth in Section 3.6. The Base Salary portion of the Change in Control Payment will be made in a lump sum cash payment as soon as practicable, but in no event
more than 10 days after Executive’s termination of employment (on or after the date of the Change in Control). In addition, Executive will be eligible for the continued health plan coverage described in Section 3.3(b)(iv) and will
receive full vesting credit for any outstanding unvested equity awards (excluding performance-based equity awards, for which vesting credit may be awarded at the sole discretion of the Company’s Compensation Committee), consistent with and
subject to the limitations of Section 3.6. 

  
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 For purposes of this Agreement, a “Change in Control” of the Corporation will be deemed
to occur as of the first day that any one or more of the following conditions is satisfied: 
 (i) The
“beneficial ownership” (as defined in Rule 13d-3 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) of securities representing 30% or more of the combined voting power of the then outstanding voting
securities of the Corporation entitled to vote generally in the election of directors (the “Corporation Voting Securities”) is accumulated, held or acquired by a Person (as defined in Section 3(a)(9) of the Exchange Act, as
modified, and used in Sections 13(d) and 14(d) thereof) (other than the Corporation, any trustee or other fiduciary holding securities under an employee benefit plan of the Corporation, holders of capital stock of the Corporation as of the date
hereof or an affiliate thereof, any corporation owned, directly or indirectly, by the Corporation’s stockholders in substantially the same proportions as their ownership of stock of the Corporation); provided, however that any
acquisition from the Corporation or any acquisition pursuant to a transaction that complies with clauses (A), (B) and (C) of subparagraph (iii) of this paragraph will not be a Change in Control under this subparagraph (i), and
provided further, that immediately prior to such accumulation, holding or acquisition, such Person was not a direct or indirect beneficial owner of 25% or more of the Corporation Voting Securities; or 

(ii) Within any twelve (12) month period that includes or is after the Start Date, individuals who constitute the Board
(the “Incumbent Board”) cease for any reason to constitute at least a majority of the Board; provided, however, that any individual becoming a director subsequent to the date hereof whose election, or nomination for election
by the Corporation’s stockholders, was approved by a vote of at least a majority of the directors then comprising the Incumbent Board will be considered as though such individual were a member of the Incumbent Board, but excluding, for this
purpose, any such individual whose initial assumption of office occurs as a result of an actual or threatened election contest with respect to the election or removal of directors or other actual or threatened solicitation of proxies or consents by
or on behalf of a person other than the Board; or 
 (iii) Consummation by the Corporation of a reorganization, merger or
consolidation, or sale or other disposition of all or substantially all of the assets of the Corporation or the acquisition of assets or stock of another entity (a “Business Combination”), in each case, unless immediately following
such Business Combination: (A) more than 60% of the combined voting power of then outstanding voting securities entitled to vote generally in the election of directors of (x) the corporation resulting from such Business Combination (the
“Surviving Corporation”), or (y) if applicable, a corporation that as a result of such transaction owns the Corporation or all or substantially all of the Corporation’s assets either directly or through one or more
subsidiaries (the “Parent Corporation”), is represented, directly or indirectly by Corporation Voting Securities outstanding immediately prior to such Business Combination (or, if 

  
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applicable, is represented by shares into which such Corporation Voting Securities were converted pursuant to such Business Combination), and such voting power among the holders thereof is in
substantially the same proportions as their ownership, immediately prior to such Business Combination, of the Corporation Voting Securities; (B) no Person (excluding any employee benefit plan (or related trust) of the Corporation or such
corporation resulting from such Business Combination) beneficially owns, directly or indirectly, 20% or more of the combined voting power of the then outstanding voting securities eligible to elect directors of the Parent Corporation (or, if there
is no Parent Corporation, the Surviving Corporation) except to the extent that such ownership of the Corporation existed prior to the Business Combination; and (C) at least a majority of the members of the board of directors of the Parent
Corporation (or, if there is no Parent Corporation, the Surviving Corporation) were members of the Incumbent Board at the time of the execution of the initial agreement, or of the action of the Board, providing for such Business Combination; or 

(iv) Approval by the Corporation’s stockholders of a complete liquidation or dissolution of the Corporation. 

However, in no event will a Change in Control be deemed to have occurred with respect to Executive if Executive is part of a purchasing group that
consummates the Change in Control transaction. Executive will be deemed “part of a purchasing group” for purposes of the preceding sentence if Executive is an equity participant in the purchasing company or group (except: (a) passive
ownership of less than two percent of the stock of the purchasing company; or (b) ownership of equity participation in the purchasing company or group that is otherwise not significant, as determined prior to the Change in Control by a majority
of the nonemployee continuing Directors; provided that, for purposes of the foregoing, participation as a management investor in such purchasing company will not be deemed to be within the exceptions provided for in (a) and (b)).

 Notwithstanding anything to contrary, a Change in Control will have occurred only if such change in ownership constitutes a change in control
under Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), and the regulations and other guidance in effect thereunder (“Section 409A”). 

3.5 Additional Vesting. In addition to any amounts otherwise payable to Executive upon a separation from service, if Executive
incurs any of the events below, he will be granted additional vesting, as described below: 
 (a) Death or Disability. If Executive
dies or becomes permanently disabled (as determined under the Company’s long-term disability plan in which Executive participates), Executive will receive an additional vesting credit under each of the Company’s employee benefit plans that
have vesting requirements. Such additional vesting credit shall begin with the date of death or disability period, as applicable, and will equal the greater of (i) 18 months vesting credit and (ii) the amount of additional vesting credit
that would be provided without regard to this Section 3.5(a) under any other Company policy or agreement with Executive. 

  
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 (b) Retirement. If Executive retires at any time after providing services as the Chief
Executive Officer of the Company for at least five continuous years and provides the Company with at least 12 months advance notice of his intent to retire (a “Retirement”), Executive will receive full vesting of any of his
outstanding equity awards. 
 If the Company determines that Executive cannot receive such additional vesting credit under the terms of any
such employee benefit plan because, for example, Executive is not actually providing any services to the Company, the Company may provide the value of such additional vesting under an alternate arrangement, such as through the purchase of an
individual insurance policy that provides similar benefits or, if applicable, through a nonqualified pension or profit sharing plan. 

3.6 Execution of Separation Agreement. As a condition to receiving the Severance Pay or the Change in Control Payment set forth
in Section 3.3 or Section 3.4, respectively, Executive must execute and return to the Company, and not revoke any part of, a separation agreement containing a general release and waiver of claims against the Company and its
respective officers, directors, stockholders, employees and affiliates with respect to Executive’s employment, and other customary terms, in a form and substance reasonably acceptable to the Company. Executive must deliver the executed
separation agreement within 21 days after Executive receives the separation agreement from the Company (unless the agreement provides a 45-day signing window), and in no event later than 60 days following the date of Executive’s termination of
employment. Such release will become effective on the date the revocation period of the ADEA claims release expires without Executive revoking such claims (the “Release Effective Date”). Any obligation of the Company to provide the
Severance Pay shall cease: (a) upon Executive’s death; (b) if Executive materially breached or breaches his contractual obligations to the Company, including those set forth in Article IV or Article V herein,
or in the release agreement; or (c) if, after Executive’s termination, the Company discovers facts and circumstances that would have justified a termination for Cause. 

3.7 Section 409A. While the parties acknowledge that any payments and benefits provided under Article III of this
Agreement are intended to be exempt from Section 409A, to the extent (a) further guidance or interpretation is issued by the IRS after the date of this Agreement which would indicate that the payments do not qualify for such exemption or
the amount of payments due under Article III increases in a manner to cause certain payments to exceed the limitation available for exempt separation payment and (b) Executive is a “specified employee” within the meaning
of Code Section 409A(a)(2)(B)(i) upon the date of Executive’s termination of employment, such payments or benefits which are not exempt and would otherwise be payable to Executive prior to the date that is six (6) months following the
date of such termination of employment shall be delayed and instead shall be paid to Executive on the first regular payroll date that occurs after the six (6) month anniversary of such date of termination. For purposes of Section 409A,
each installment of Severance Pay under Article III shall be treated as a right to a separate payment. 
 3.8 Excess
Parachute Payments. Notwithstanding any provision of this Agreement to the contrary, if any amount or benefit to be paid or provided under this Agreement would be an “Excess Parachute Payment” within the meaning of Code
Section 280G but for the application of this sentence, then the payments and benefits to be paid or provided under this 

  
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Agreement will be reduced to the minimum extent necessary (but in no event to less than zero) so that no portion of any such payment or benefit, as so reduced, constitutes an Excess Parachute
Payment; provided, however, that the foregoing reduction will be made only if and to the extent that such reduction would result in an increase in the aggregate payment and benefits to be provided to Executive, determined on an
after-tax basis (taking into account the excise tax imposed pursuant to Code Section 4999, any tax imposed by any comparable provision of state law, and any applicable federal, state and local income and employment taxes).  

The fact that Executive’s right to payments or benefits may be reduced by reason of the limitations contained in this
Section 3.8 will not of itself limit or otherwise affect any other rights of Executive other than pursuant to this Agreement. In the event that any payment or benefit intended to be provided under this Agreement is required to be reduced
pursuant to this Section 3.8, the reduction shall be made in the following order: (a) first reducing, if any, those payments or benefits which have a higher Parachute Value than actual present value, (b) then, to the extent
necessary, reducing cash payments or benefits; and (c) then, to the extent necessary, reducing those payments or benefits having the next highest ratio of Parachute Value to actual present value of such payments or benefits as of the date
of the change of control (as defined under Code Section 280G). For purposes of this Section 3.8, present value shall be determined in accordance with Section 280G(d)(4) of the Code. For purposes of this Section 3.8,
the “Parachute Value” of a payment or benefit means the present value as of the date of the change of control of the portion of such payment that constitutes a “parachute payment” under Section 280G(b)(2) of the
Code, as valued in accordance with Section 280G of the Code any interpretive guidance thereunder. 
 3.9 Removal from any
Boards and Positions. If Executive’s employment is terminated for any reason under this Agreement, Executive will, immediately upon Executive’s termination of employment, be deemed to have resigned from (a) if a member, the
Board as well as the board of directors of any GLDD Entity (as defined below) or any other board to which he has been appointed or nominated by or on behalf of the Company, (b) any position with the Company or any GLDD Entity, including, but
not limited to, as an officer of the Company or any GLDD Entity, and (c) any fiduciary positions with respect to the Company’s benefit plans. In addition, and as a condition to receiving the Severance Pay described in
Section 3.3 or the Change in Control Payment described in Section 3.4, Executive shall take any and all necessary steps to effectuate his resignation from such positions. 

ARTICLE IV 
 EXCLUSIVITY
OF SERVICES AND RESTRICTIVE COVENANTS 
 4.1 Confidential Information. Executive acknowledges and agrees that the
Confidential Information (as defined below) of the Company and its subsidiaries and any other entity related to the Company (each, a “GLDD Entity”) that he obtained during the course of his employment by the Company is the property
of the Company or such other GLDD Entity. Executive will never, directly or indirectly, disclose, publish or use any Confidential Information of which Executive has become aware, whether or not such information was developed by him. All duties and
obligations set forth in this Agreement regarding Confidential Information shall be in addition to those which exist under the Illinois Trade Secrets Act and at common law. 

  
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 As used in this Agreement, “Confidential Information” means information that is not
generally known to the public and that was or is used, developed or obtained by the Company or any other GLDD Entity, in connection with its businesses, including but not limited to: 

i. products or services, unannounced products or services, product or service development information (or other proprietary product or service
information); 
 ii. fees, costs, bids and pricing structures and quotations or proposals given to agents, customers, sureties, suppliers, or
prospective customers, agents, sureties or suppliers, or received from any such person or entity; 
 iii. accounting or financial records;

 iv. strategic business plans; 

v. information system applications or strategies; 

vi. customer and vendor lists and employee lists and directories; 

vii. marketing plans, bidding strategies and processes, and negotiation strategies, whether past, current, or future; 

viii. accounting and business methods; 

ix. legal advice and/or attorney work product; 

x. trade secrets and other proprietary information; 

xi. information, analysis or strategies regarding acquisitions, mergers, other business combinations, divestitures, recapitalizations, or new
ventures; and 
 xii. nonpublic information that was acquired by Executive concerning the requirements and specifications of the
Company’s or any other GLDD Entity’s agents, vendors, contractors, customers, or potential customers. 
 Notwithstanding anything
to the contrary, Confidential Information does not include any information that: (a) is publicly disclosed by law or pursuant to, and to the extent required by, an order of a court of competent jurisdiction or governmental agency;
(b) becomes publicly available through no fault of Executive; or (c) has been published in a form generally available to the public before Executive proposes to disclose, publish, or use such information. 

4.2 Noncompetition. During the Employment Term and for the 18-month period following the termination of Executive’s
employment with the Company for any reason (the “Restricted Period”), Executive will not, on behalf of himself or any other entity, have an ownership interest in or become employed or engaged by, or otherwise participate in or
render services to, any business or enterprise (including, without limitation, any division, group or franchise of a larger organization) within the Geographical Area (as defined below) that engages in any dredging or demolition or any other
business engaged in by the Company; provided,  

  
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however, that this restriction shall not prohibit Executive from passive beneficial ownership of less than three percent of any class of securities of a publicly-held
corporation whose stock is traded on a U.S. national securities exchange or traded in the over-the-counter market. For the purpose of this provision, “Geographical Area” means North America, Central America, South America, the
Caribbean, the Middle East, Africa, India, Australia, and Asia. Notwithstanding anything in this Article IV to the contrary, Executive may, at any time during the Restricted Period, provide written notice to the Company that
(a) describes a particular business or employment opportunity that he is interested in pursuing or in which he may wish to engage, and (b) request that the Company agree that the opportunity so described would not violate this
Section 4.2. Within a reasonable time, the Company will send Executive a written response, indicating whether or not the Company consents to Executive engaging in the opportunity described in his notice. 

4.3 Non-Solicitation. During the Restricted Period, Executive shall not (other than in furtherance of Executive’s legitimate
job duties on behalf of Company), directly or indirectly, on Executive’s own behalf or for any other person or entity: (a) solicit for employment, hire or engage, or attempt to solicit for employment, hire or engage, any person who is or
was employed by the Company within the six (6) month period prior to the solicitation, hire or engagement, or (b) otherwise interfere with the relationship between any such person and the Company. 

4.4 Non-Interference with Business Relationships. During the Restricted Period, Executive shall not (other than in furtherance of
Executive’s legitimate job duties on behalf of the Company), directly or indirectly, on Executive’s own behalf or for any other person or entity: (a) solicit, for a purpose related to a competitive activity (i.e., an activity
prohibited by Section 4.2), any customer, vendor or agent of the Company that was doing business with the Company during the six month period prior to the solicitation; or (b) induce, or attempt to induce, any customer, vendor or
agent of the Company to reduce or cease doing business with the Company, or otherwise interfere with the relationship between such entity and the Company. 

4.5 Equitable Modification. If any court of competent jurisdiction shall deem any provision in this Article IV too
restrictive, the other provisions shall stand, and the court shall modify the unduly restrictive provision to the point of greatest restriction permissible by law. 

4.6 Remedies. Executive acknowledges that the agreements and covenants contained in this Article IV are essential to
protect the Company and its business and are a condition precedent to entering into this Agreement. Should Executive breach any covenants in this Article IV, then among other remedies, the duration of the covenant shall be
extended by the period of any such breach. Executive agrees that irreparable harm would result from Executive’s breach or threat to breach any provision of this Article IV, and that monetary damages alone would not provide adequate
relief to the Company for the harm incurred. Executive agrees that in addition to money damages, the Company shall be entitled to seek and obtain temporary, preliminary, and permanent injunctive relief restraining Executive from committing or
continuing any breach without being required to post a bond. Without limiting the foregoing, upon a breach by Executive of any provision of this Article IV, any outstanding Severance Pay shall cease and be forfeited, and Executive shall
immediately reimburse the Company for any Severance Pay previously paid. 

  
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 ARTICLE V 

POST-TERMINATION OBLIGATIONS 

5.1 Return of Company Materials. No later than three (3) business days following the termination of Executive’s
employment for any reason, Executive shall return to the Company all Company property that is then in Executive’s possession, custody or control, including, without limitation, all keys, access cards, credit cards, computer hardware and
software, documents, records, policies, marketing information, design information, specifications and plans, data base information and lists, and any other property or information that Executive has or had relating to the Company (whether those
materials are in paper or computer-stored form), and including but not limited to any documents containing, summarizing, or describing any Confidential Information. 

5.2 Executive Assistance. During Executive’s employment with the Company and for a period of 12 months after the termination
of such employment, Executive shall, upon reasonable notice, furnish the Company with such information as may be in Executive’s possession or control, and cooperate with the Company in any reasonable manner that the Company may request,
including without limitation conferring with the Company with regard to any litigation, claim, or other dispute in which the Company is or may become a party. The Company shall reimburse Executive for all reasonable out-of-pocket expenses incurred
by Executive in fulfilling Executive’s obligations under this Section 5.2. The Company will make any such reimbursement within 30 days of the date Executive provides the Company with documentary evidence of such expense consistent
with the policies of the Company. Notwithstanding anything to the contrary, any such reimbursement shall be administered so as to comply with Treasury Regulation Section 1.409A-3(i)(1)(iv). 

ARTICLE VI 

MISCELLANEOUS 
 6.1
Notices. Any notices, consents or other communications required or permitted to be sent or given hereunder shall be in writing and shall be deemed properly served if (a) delivered personally, in which case the date of such notice
shall be the date of delivery; (b) delivered to a nationally recognized overnight courier service, in which case the date of delivery shall be the next business day; or (c) sent by facsimile transmission (with a copy sent by first-class
mail), in which case the date of delivery shall be the date of transmission, or if after 5:00 P.M., the next business day. If not personally delivered, notice shall be sent using the addresses set forth below: 

If to Executive, to the address listed on the signature page hereto or the last address on file in the records of the Company. 

  
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 If to the Company: 

Great Lakes Dredge & Dock Corporation 

2122 York Road 

Oak Brook, IL 60523 

Attn: Kathleen M. LaVoy, Assistant General Counsel 

fax: (630) 574-3007 

email: kmlavoy@gldd.com 

telephone: (630) 574-3468 

or such other address as may hereafter be specified by notice given by either party to the other party. Executive shall promptly notify the Company of any
change in his address set forth on the signature page. 
 6.2 Company Stock Retention. Executive shall be subject to the
Company’s stock retention guidelines and policies in effect from time-to-time. 
 6.3 Withholding. The Company may
withhold from any payment that it is required to make under this Agreement amounts sufficient to satisfy applicable withholding requirements under any federal, state or local law, or any other amounts due and owing to the Company from Executive.

 6.4 Successors and Assigns. This Agreement shall not be assignable by Executive without the Company’s written consent.
The Company may unilaterally assign this Agreement to any successor employer or corporation or entity that purchases substantially all of the assets of or succeeds to the business of the Company. Subject to the foregoing, this Agreement shall be
binding upon and inure to the benefit of the parties hereto and their respective heirs, personal representatives, successors and assigns. 

6.5 No Waiver. No failure or delay by the Company or Executive in enforcing or exercising any right or remedy hereunder will
operate as a waiver thereof. No modification, amendment or waiver of this Agreement or consent to any departure by Executive from any of the terms or conditions thereof, will be effective unless in writing and signed by the Chairman or Lead Director
of the Company’s Board. Any such waiver or consent will be effective only in the specific instance and for the purpose for which given. 

6.6 Severability; Survivability. If any term or provision of this Agreement shall be held to be invalid or unenforceable, the
remaining terms and provisions hereof shall not be affected thereby and shall be enforced to the fullest extent permitted under law. Executive’s obligations in Articles IV and V shall survive and continue in full force
notwithstanding the termination of this Agreement or Executive’s employment for any reason. 
 6.7 Execution in
Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be considered an original instrument, but all of which shall be considered one and the same agreement. 

  
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 6.8 Governing Law; Consent to Jurisdiction; Waiver of Jury. This Agreement shall be
governed by and construed in accordance with the internal laws of the State of Illinois, without regard to its conflict of law principles. For the purposes of any suit, action, or other proceeding arising out of this Agreement or with respect to
Executive’s employment hereunder, the parties: (a) agree to submit to the exclusive jurisdiction of the federal or state courts located in Cook County, Illinois; (b) waive any objection to personal jurisdiction or venue in such
jurisdiction, and agree not to plead or claim forum non conveniens; and (c) waive their respective rights to a jury trial of any claims and causes of action, and agree to have any matter heard and decided solely by the court. 

6.9 Construction. The language used in this Agreement will be deemed to be the language chosen by Executive and the Company to
express their mutual intent, and no rule of strict construction will be applied against Executive or the Company. The headings in this Agreement are for convenience of reference only and will not limit or otherwise affect the meaning of the
provision. 
 6.10 Entire Agreement; Amendments. This Agreement contains the entire understanding of the parties hereto with
regard to the subject matter contained herein, and supersedes all prior agreements, understandings or letters of intent with regard to the subject matter contained herein between the parties hereto, unless otherwise specified herein. This Agreement
shall not be amended, modified or supplemented except by a written instrument signed by each of the parties hereto. 

  
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 [SIGNATURE PAGE TO EMPLOYMENT AGREEMENT] 

IN WITNESS WHEREOF, each of the parties hereto has duly executed this Employment Agreement as of the date first set forth above.

  

			
	Great Lakes Dredge & Dock Corporation
		
	By:	 	 /s/ Carl A. Albert

		
	Title:	 	 Compensation Committee Chair

	
	Jonathan W. Berger
	
	 /s/ Jonathan W. Berger




  
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