On Assignment, Inc. is a diversified professional staffing firm providing flexible and permanent staffing solutions in specialty skills, including laboratory/scientific, healthcare/nursing/physician, medical financial, information technology (IT) and engineering. The Company provides clients in these markets with short-term or long-term assignments of contract professionals, contract-to-permanent placement and direct placement of these professionals. The Company's business consists of four operating segments: Life Sciences, Healthcare, Physician, and IT and Engineering. On October 1, 2009, the Company acquired Fox Hill & Associates. In April 2010, the Company completed the acquisition of The Cambridge Group Ltd., a provider of specialized staffing in Physician, Clinical/Scientific and IT. In July 2010, the Company acquired Sharpstream. In February 2011, the Company acquired Valesta.In August 2011, the Company acquired HealthCare Partners, Inc.