On Assignment, Inc. is a global provider of skilled, professionals in the life sciences, healthcare and technology sectors. It operates in four segments: Life Sciences, which provides contract, contract-to-permanent and direct placement services of laboratory and scientific professionals to the biotechnology, pharmaceutical, food and beverage, medical device, personal care, chemical and environmental industries; Healthcare, which include the combined results of the Nurse Travel and Allied Healthcare lines of business; Physician, which provides contract and direct placement physicians to healthcare organizations, and Information Technology (IT) and Engineering, which provides high-end contract and direct placement services of information technology and engineering professionals with expertise in specialized information technology. On February 28, 2011, it acquired Valesta. On July 31, 2011, it acquired HealthCare Partners (HCP). In May 2012, the Company acquired Apex Systems, Inc.