Willdan Group, Inc. (“Willdan”) (NASDAQ:WLDN), today announced the planned date for its first quarter 2011 financial results and conference call. On Thursday, May 12, 2010, after market close, Willdan plans to announce its first quarter 2011 financial results. Following the announcement, Chief Executive Officer Thomas Brisbin and Chief Financial Officer Kimberly Gant plan to host a conference call at 5:00 p.m. Eastern/2:00 p.m. Pacific on the same day, to further discuss Willdan’s financial results. Interested parties may participate in the conference call by dialing 800-762-8779 (480-629-9771 for international callers). When prompted, ask for the “Willdan Group, Inc., First Quarter 2011 Conference Call.” The conference call will be webcast simultaneously on Willdan’s website at www.willdan.com under Investors: Events. The telephonic replay of the conference call may be accessed approximately two hours after the call through May 26, 2011, by dialing 800-406-7325 (303-590-3030 for international callers). The replay access code is 4437628. The webcast replay will be archived for 12 months. About Willdan Group, Inc. Founded over 45 years ago, Willdan is a provider of professional technical and consulting services to small and mid-sized public agencies, large public utilities and, to a lesser extent, private industry primarily located in California, New York and Arizona. Willdan provides a broad range of services to clients, including civil engineering and planning, energy efficiency and sustainability, economic and financial consulting, and homeland security and communications and technology. For additional information, visit Willdan's website at www.willdan.com. Forward-Looking Statements Any statements made in this release that are not based on historical fact are forward-looking statements. Any forward-looking statements made in this release represent management's best judgment as to what may occur in the future. However, Willdan Group, Inc.'s actual outcome and results are not guaranteed and are subject to certain risks, uncertainties and assumptions, and may differ materially from what is expressed. For a description of factors that could cause actual results to differ materially from such forward-looking statements, see the discussion under the section "Risk Factors" included in Willdan's Form 10-K for the year ended December 31, 2010 filed on March 29, 2011.