OFCCP is charged with ensuring that about 200,000 federal contractor establishments refrain from discrimination and take affirmative action to provide equal employment opportunities for certain protected classes of workers. GAO was asked to review OFCCP practices. In this report, GAO (1) assessed how OFCCP conducts supply and service compliance evaluations, including the methodology, resources, and results, and (2) evaluated OFCCP outreach, assistance, and guidance efforts to assist contractors in complying with the requirements it enforces. GAO analyzed both OFCCP Information System data and a nongeneralizable sample of 43 case files and reviewed relevant federal laws, executive orders, regulations, guidance, and agency documents. GAO also interviewed a nongeneralizable sample of 24 contractors with and without experience with a compliance evaluation; managers and staff in OFCCP’s headquarters and all six regional offices; and representatives of national organizations representing contractors and protected workers’ interests.