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Exhibit 10.13

WILLDAN GROUP, INC.
2006 EMPLOYEE STOCK PURCHASE PLAN

        1.    PURPOSE.    The purpose of this Willdan Group, Inc. 2006 Employee Stock Purchase Plan (the "Plan") is to encourage stock ownership by eligible employees of Willdan Group, Inc. (the "Company") and its Subsidiaries, excluding Public Agency Resource (PARs), and to provide them with an incentive to contribute to the profitability and success of the Company. The Plan is intended to qualify as an "employee stock purchase plan" under Section 423 of the Code and will be maintained for the exclusive benefit of eligible employees of the Company and its Subsidiaries.

        2.    DEFINITIONS.    For purposes of the Plan, in addition to the terms defined in Section 1, the following terms are defined:

        3.    ADMINISTRATION.    


        4.    STOCK SUBJECT TO PLAN.    Subject to adjustment as provided below, the total number of shares of Stock reserved and available for issuance or which may be otherwise acquired upon exercise of Purchase Rights under the Plan will be 300,000; provided, however, that not more than 100,000 shares of Stock shall be available for issuance during any one calendar year. Any shares of Stock delivered by the Company under the Plan may consist, in whole or in part, of authorized and unissued shares or treasury shares or shares of Stock purchased on the open market. The number and kind of such shares of Stock subject to the Plan will be proportionately adjusted, as determined by the Board, in the event of any extraordinary dividend or other distribution, recapitalization, forward or reverse split, reorganization, merger, consolidation, spin-off, combination, repurchase, or share exchange, or other similar corporate transaction or event affecting the Stock. If, at the end of any Offering Period, the number of shares of Stock with respect to which Purchase Rights are to be exercised exceeds the number of shares of Stock then available under the Plan, the Board shall make a pro rata allocation of the shares of Stock remaining available for purchase in as uniform a manner as shall be practicable and as it shall determine to be equitable.

        5.    ENROLLMENT AND CONTRIBUTIONS.    

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        The Company will notify an employee of the date as of which he or she is eligible to enroll in the Plan, and will make available to each eligible employee the necessary enrollment forms.

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        6.    PURCHASES OF STOCK.    

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        7.    TERMINATION AND DISTRIBUTIONS.    

        8.    GENERAL.    

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        9.    GENERAL PROVISIONS.    

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