The Office of Legal Counsel (OLC) provides independent legal and policy advice to the IG and all components of OIG on a variety of substantive and procedural matters relating to OIG's audit, evaluation, and investigation activities. OLC also partners with other offices by playing major roles in reviewing and redrafting policies, regulations, and legislative proposals to remedy any legal concerns.

Additionally, OLC represents OIG in administrative litigation; manages the OIG ethics program, including providing ethics training, advice, and financial disclosure reviews; and coordinates OIG responses to Freedom of Information Act and other document requests.