On Assignment, Inc. President And CEO Peter T. Dameris Is An Ernst & Young Entrepreneur Of The Year® 2012 Award Winner In Greater Los Angeles Region

On Assignment, Inc. (NASDAQ: ASGN) announced today that President and CEO Peter T. Dameris received the Ernst & Young Entrepreneur Of The Year ® 2012 Award in the Services category for Greater Los Angeles. The award recognizes outstanding entrepreneurs who demonstrate excellence and extraordinary success in such areas as innovation, financial performance, and personal commitment to their businesses and communities. Mr. Dameris was selected by an independent panel of judges, and the award was presented at a special gala on June 19, 2012, at The Beverly Hilton Hotel.

“It is an honor to have been chosen for this prestigious award out of a group of many exceptional entrepreneurs,” said Dameris. “I’m really proud of what On Assignment has been able to accomplish over the past several years, and a lot of its success is due to our smart, dedicated, and hardworking employees.”

Now in its 26th year, the Ernst & Young Entrepreneur Of The Year Program has honored the inspirational leadership of such entrepreneurs as Jeff Bezos of Amazon.com, Michael Dell of Dell Inc., Herb Kelleher of Southwest Airlines, Fred Smith of FedEx, Larry Page and Sergey Brin of Google, Richard Schulze of Best Buy, Andrew Mason of Groupon, Mindy Grossman of HSN, Inc., Reid Hoffman and Jeff Weiner of LinkedIn, and many more.

As a Greater Los Angeles award winner, Mr. Dameris is now eligible for consideration for the National Entrepreneur Of The Year 2012 Award. Award winners in several national categories, as well as the National Entrepreneur Of The Year Overall Award winner, will be announced at the annual awards gala in Palm Springs, California, on November 17, 2012. The awards are the culminating event of the Ernst & Young Strategic Growth Forum ®, the nation’s most prestigious gathering of high-growth, market-leading companies.

Sponsors

Founded and produced by Ernst & Young LLP, the Entrepreneur Of The Year Awards are nationally sponsored in the United States by SAP America and the Ewing Marion Kauffman Foundation.

In the Greater Los Angeles Region, sponsors include Acacia Wealth Advisors, ADP, CresaPartners, J.H. Cohn, Marsh, Montgomery & Co., Scherzer International, Smart Business, Strategic Equity Group, The Big Picture, and Union Bank.

About On Assignment

On Assignment, Inc. (NASDAQ: ASGN) is a leading global provider of in-demand, skilled professionals in the growing technology, healthcare, and life sciences sectors, where quality people are the key to success. The Company goes beyond matching résumés with job descriptions to match people they know into positions they understand for temporary, contract-to-hire, and direct hire assignments. Clients recognize On Assignment for their quality candidates, quick response, and successful assignments. Professionals think of On Assignment as career-building partners with the depth and breadth of experience to help them reach their goals. On Assignment was founded in 1985 and went public in 1992. The corporate headquarters are located in Calabasas, California, with a network of approximately 125 branch offices throughout the United States, Canada, United Kingdom, Netherlands, Ireland, Belgium, and Spain. Additionally, physician placements are made in Australia and New Zealand. To learn more, please visit www.onassignment.com.

About Ernst & Young Entrepreneur Of The Year ®

Ernst & Young Entrepreneur Of The Year is the world’s most prestigious business award for entrepreneurs. The unique award makes a difference through the way it encourages entrepreneurial activity among those with potential, and recognizes the contribution of people who inspire others with their vision, leadership, and achievement. As the first and only truly global award of its kind, Entrepreneur Of The Year celebrates those who are building and leading successful, growing and dynamic businesses, recognizing them through regional, national, and global awards programs in more than 140 cities in more than 50 countries.

About Ernst & Young

Ernst & Young is a global leader in assurance, tax, transaction, and advisory services. Worldwide, our 152,000 people are united by our shared values and an unwavering commitment to quality. We make a difference by helping our people, our clients, and our wider communities achieve their potential.

Ernst & Young refers to the global organization of member firms of Ernst & Young Global Limited, each of which is a separate legal entity. Ernst & Young Global Limited, a UK company limited by guarantee, does not provide services to clients. For more information about our organization, please visit www.ey.com.

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