On Assignment, Inc. Changes Time for First Quarter Earnings Release Conference Call

Time of Conference Call Changed to 5:00 p.m. EDT from 4:30 p.m. EDT

On Assignment, Inc. (NYSE: ASGN), a leading global provider of diversified professional staffing solutions, will announce its first quarter financial results after the market at approximately 4:15 p.m. EDT on Wednesday, April 27, 2016 to be followed by its regular quarterly conference call later that day at 5:00 p.m. EDT. The time of the conference call is 30 minutes later than previously scheduled to allow participants more time to review the release and the Company’s prepared remarks, which will be posted for the first time to its website prior to the call. In the future, the Company plans to post its prepared remarks on its website prior to the earnings release conference call and to schedule the conference call to begin 45 minutes after the release of the earnings results.

The dial-in number for this conference call is 800-230-1074 ([phone] outside the United States). Please reference Conference ID number 390511. 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 7:00 p.m. EDT on Wednesday, April 27, 2016 until midnight on Wednesday, May 11, 2016. The dial-in number for the replay is 800-475-6701 ([phone] outside the United States). The replay access code is 390511. This call is being webcast by CCBN and can be accessed through On Assignment's website at www.onassignment.com.

About On Assignment

On Assignment, Inc. (NYSE: ASGN) is a leading global provider of highly skilled, hard-to-find professionals in the growing technology, life sciences, and creative 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 contract, 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 operates a network of branch offices throughout the United States, Canada and Europe. To learn more, visit http://www.onassignment.com.

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On Assignment, Inc.Ed PierceChief Financial Officer818-878-7900