On Assignment, Inc. (NYSE: ASGN), a leading global provider of diversified professional staffing solutions, will announce its 2012 fourth quarter financial results after market on Thursday, February 14, 2013, to be followed by its regular quarterly conference call later that day at 1:30 p.m. PST (4:30 p.m. EST). The dial-in number for this conference call is 877-837-4158 (+1-281-913-8521 outside the United States). Please reference conference ID number 87843435. The call will be hosted by Peter Dameris, President and Chief Executive Officer of On Assignment, Inc. A replay of the conference call will be available from 4:30 p.m. PST (7:30 p.m. EST) on Thursday, February 14, 2013 until 9:00 p.m. PST on Thursday, February 28, 2013. The dial-in number for the replay is 855-859-2056 (+1-404-537-3406 outside the United States). The conference ID number is 87843435. This call is being webcast by CCBN and can be accessed through On Assignment's website at www.onassignment.com. About On Assignment, Inc. On Assignment, Inc. (NYSE: 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 its 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 is located in Calabasas, California, with a network of approximately 130 branch offices throughout the United States, Canada, United Kingdom, Netherlands, Ireland and Belgium. To learn more, visit http://www.onassignment.com .