Willdan Group, Inc. (“Willdan”) (NASDAQ: WLDN) announced today that President and Chief Executive Officer Thomas Brisbin will present at the Wedbush Securities Clean Technology and Industrial Growth Conference on Wednesday, September 14, 2011 at 3:35 p.m. Pacific Time. The conference will be held at The Westin San Francisco Market Street Hotel in San Francisco, California. Willdan invites investors and other interested parties to attend a live webcast of its presentation on Willdan's website at www.willdan.com under Investors: Events. A replay of the presentation will be available on the website following the presentation. 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 web site at www.willdan.com.