Inspector General Act Amendments of 1981

Inspector General Act Amendments of 1981 - Amends the Inspector General Act of 1978 to establish an Office of Inspector General in the Departments of Defense, Justice, and Treasury, and in the Agency for International Development (AID). Transfers to such Offices the functions of specified existing audit and investigation offices of such Departments and Agency.

Prohibits the appointment of a member of the Armed Forces of the United States as Inspector General of the Department of Defense. Authorizes such Inspector General to use part of the Army or the Air Force as a posse comitatus to conduct an audit or investigation.

Directs the Inspector General of AID, in addition to the duties prescribed by such Act, to: (1) direct the security activities of AID; (2) direct all audit, investigative, and security activities of the United States International Development Cooperation Agency (IDCA), as requested by the Director of IDCA; (3) appoint an Assistant Inspector General for Security; and (4) submit, semiannually, an activities report to the Director of IDCA.

Declares that the Inspector General Act of 1978 does not authorize the Offices of Inspector General to disclose confidential information to the public or to withhold information from Congress.

Establishes the compensation for all Inspectors General at level IV of the Executive Schedule.