On Assignment, Inc. (NASDAQ: ASGN), a leading global provider of diversified professional staffing solutions, announced today that it will transfer the listing of its common stock to the New York Stock Exchange (NYSE) from the NASDAQ Stock Market. The Company expects to begin trading on the NYSE on August 31, 2012, using its current symbol “ASGN” and will continue to trade on NASDAQ until the transfer takes place. “On Assignment continues to expand its national and global presence in the technology, healthcare, and life sciences staffing markets through organic growth and acquisitions,” said Peter Dameris, President and CEO of On Assignment. “NASDAQ has been a valuable partner; however, we believe trading on NYSE Euronext, the world’s largest stock exchange, will broaden our visibility and provide long-term value to our customers, employees, and shareholders.” In May 2012, On Assignment acquired Apex Systems, making On Assignment the second largest IT staffing company in the United States and one of the largest publicly traded professional staffing companies in the world. The Company also celebrates its twentieth year as a publicly traded company in September. “This year has included many milestones for On Assignment,” said Dameris. “Our continued growth strengthens our position in the financial marketplace and we are pleased to partner with NYSE Euronext as we move forward as one of the leading professional staffing firms.” To celebrate the occasion, representatives from On Assignment will ring the NYSE Opening Bell at 9:30 a.m. EDT on September 19, 2012. 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.