On Assignment, Inc., a professional staffing firm, provides flexible and permanent staffing solutions in the United States, Europe, Australia, and New Zealand. It offers its clients with short-term or long-term assignments of contract professionals, contract-to-permanent placement, and direct placement of professionals. The company operates in four segments: Life Sciences, Healthcare, Physician, and IT and Engineering. Life Sciences segment provides locally based contract life science professionals to clients in the biotechnology, pharmaceutical, food and beverage, medical device, personal care, chemical, automotive, educational, and environmental industries. Its contract professionals include chemists, clinical research associates, clinical lab assistants, engineers, biologists, biochemists, microbiologists, molecular biologists, food scientists, regulatory affairs specialists, lab assistants, and other skilled scientific professionals. Healthcare segment offers locally-based and traveling contract professionals comprising nurses, specialty nurses, health information management professionals, dialysis technicians, surgical technicians, imaging technicians, x-ray technicians, medical technologists, phlebotomists, coders, billers, claims processors, and collections staff. It serves healthcare clients, including hospitals, integrated delivery systems, imaging centers, clinics, physician offices, reference laboratories, universities, managed care organizations, and third-party administrators. Physician segment provides short and long-term physician staffing services and permanent physician search and consulting services. IT and Engineering segment offers consultants with expertise in information technology, hardware, and software engineering, as well as mechanical, electrical, validation, and telecommunications engineering fields. The company was founded in 1985 and is headquartered in Calabasas, California.