§ 3122. Federal service

• (a) and
• (b) of section 3121 whether any such service constitutes employment, the periods of such employment, and whether remuneration paid for any such service constitutes wages. The person making such return may, for convenience of administration, make payments of the tax imposed under section 3111 with respect to such service without regard to the contribution and benefit base limitation in section 3121(a)(1), and he shall not be required to obtain a refund of the tax paid under section 3111 on that part of the remuneration not included in wages by reason of section 3121(a)(1). Payments of the tax imposed under section 3111 with respect to service, performed by an individual as a member of a uniformed service, to which the provisions of section 3121(m)(1) are applicable, shall be made from appropriations available for the pay of members of such uniformed service. The provisions of this section shall be applicable in the case of service performed by a civilian employee, not compensated from funds appropriated by the Congress, in the Army and Air Force Exchange Service, Army and Air Force Motion Picture Service, Navy Exchanges, Marine Corps Exchanges, or other activities, conducted by an instrumentality of the United States subject to the jurisdiction of the Secretary of Defense, at installations of the Department of Defense for the comfort, pleasure, contentment, and mental and physical improvement of personnel of such Department; and for purposes of this section the Secretary of Defense shall be deemed to be the head of such instrumentality. The provisions of this section shall be applicable also in the case of service performed by a civilian employee, not compensated from funds appropriated by the Congress, in the Coast Guard Exchanges or other activities, conducted by an instrumentality of the United States subject to the jurisdiction of the Secretary of the Department in which the Coast Guard is operating, at installations of the Coast Guard for the comfort, pleasure, contentment, and mental and physical improvement of personnel of the Coast Guard; and for purposes of this section the Secretary of the Department in which the Coast Guard is operating shall be deemed to be the head of such instrumentality.