Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

Apex Systems, LLC, a Virginia limited liability company

CyberCoders, Inc., a California corporation

Creative Circle, LLC, a Delaware limited liability company

Lab Support, LLC, a Delaware limited liability company

On Assignment Staffing Services, LLC, a Delaware limited liability company

Oxford Global Resources, LLC, a Delaware limited liability company

Other subsidiaries of the Registrant are omitted from this exhibit pursuant to Regulation S-K 601(b)(21)(ii)