On Assignment, Inc. provides professionals for contract, contract-to-hire, and direct hire assignments in the United States, Europe, and Canada. The company operates in two segments, Apex and Oxford. The Apex segment offers technical, scientific, and digital and creative professionals for contract, contract-to-hire, and permanent placement positions to Fortune 1000 and mid-market clients; IT staffing and consulting services comprising IT infrastructure, application development, project management, and healthcare IT professionals; and creative, marketing, advertising, and digital professionals. It also provides contract and permanent life science professionals, which includes chemists, clinical research associates, clinical lab assistants, engineers, biologists, biochemists, microbiologists, molecular biologists, biostatisticians, drug safety specialists, SAS programmers, medical writers, food scientists, regulatory affairs specialists, lab assistants, and other skilled scientific professionals. This segment offers staffing and services support for companies from various industries, including technology, financial services, healthcare, business services, telecommunications, government services, consumer, biotechnology, pharmaceutical, food and beverage, personal care, chemical, medical device, automotive, municipal, education, and environmental and clinical research industries. The Oxford segment recruits and delivers experienced IT, engineering, and regulatory and compliance consultants to clients for temporary assignments; provides permanent placements in engineering, technology, sales, executive, financial, accounting, scientific, legal, and operations positions; and offers locally-based contract and permanent life science professionals to clients with research and development projects under the Lab Support, LabResource, and Valesta brands. The company was founded in 1985 and is headquartered in Calabasas, California.