retirement system
(7) Service performed in the employ of a State, or any political subdivision thereof, or any instrumentality of any one or more of the foregoing which is wholly owned thereby, except that this paragraph shall not apply in the case of— (A) service included under an agreement under section 418 of this title , (B) service which, under subsection (k), constitutes covered transportation service, (C) service in the employ of the Government of Guam or the Government of American Samoa or any political subdivision thereof, or of any instrumentality of any one or more of the foregoing which is wholly owned thereby, performed by an officer or employee thereof (including a member of the legislature of any such Government or political subdivision), and, for purposes of this subchapter— (i) any person whose service as such an officer or employee is not covered by a retirement system established by a law of the United States shall not, with respect to such service, be regarded as an officer or employee of the United States or any agency or instrumentality thereof, and (ii) the remuneration for service described in clause (i) (including fees paid to a public official) shall be deemed to have been paid by the Government of Guam or the Government of American Samoa or by a political subdivision thereof or an instrumentality of any one or more of the foregoing which is wholly owned thereby, whichever is appropriate, (D) service performed in the employ of the District of Columbia or any instrumentality which is wholly owned thereby, if such service is not covered by a retirement system established by a law of the United States (other than the Federal Employees Retirement System provided in chapter 84 of title 5); except that the provisions of this subparagraph shall not be applicable to service performed— (i) in a hospital or penal institution by a patient or inmate thereof; (ii) by any individual as an employee included under section 5351(2) of title 5 (relating to certain interns, student nurses, and other student employees of hospitals of the District of Columbia Government), other than as a medical or dental intern or as a medical or dental resident in training; (iii) by any individual as an employee serving on a temporary basis in case of fire, storm, snow, earthquake, flood, or other similar emergency; or (iv) by a member of a board, committee, or council of the District of Columbia, paid on a per diem, meeting, or other fee basis, (E) service performed in the employ of the Government of Guam (or any instrumentality which is wholly owned by such Government) by an employee properly classified as a temporary or intermittent employee, if such service is not covered by a retirement system established by a law of Guam; except that (i) the provisions of this subparagraph shall not be applicable to services performed by an elected official or a member of the legislature or in a hospital or penal institution by a patient or inmate thereof, and (ii) for purposes of this subparagraph, clauses (i) and (ii) of subparagraph (C) shall apply, or (F) service in the employ of a State (other than the District of Columbia, Guam, or American Samoa), of any political subdivision thereof, or of any instrumentality of any one or more of the foregoing which is wholly owned thereby, by an individual who is not a member of a retirement system of such State, political subdivision, or instrumentality, except that the provisions of this subparagraph shall not be applicable to service performed— (i) by an individual who is employed to relieve such individual from unemployment; (ii) in a hospital, home, or other institution by a patient or inmate thereof; (iii) by any individual as an employee serving on a temporary basis in case of fire, storm, snow, earthquake, flood, or other similar emergency; (iv) by an election official or election worker if the remuneration paid in a calendar year for such service is less than $1,000 with respect to service performed during any calendar year commencing on or after January 1, 1995 , ending on or before December 31, 1999 , and the adjusted amount determined under section 418(c)(8)(B) of this title for any calendar year commencing on or after January 1, 2000 , with respect to service performed during such calendar year; or (v) by an employee in a position compensated solely on a fee basis which is treated pursuant to section 411(c)(2)(E) of this title as a trade or business for purposes of inclusion of such fees in net earnings from self employment; for purposes of this subparagraph, except as provided in regulations prescribed by the Secretary of the Treasury, the term “retirement system” has the meaning given such term by section 418(b)(4) of this title ;