Pub. L. 88-643, tit. II, pt. F, sec. 252
prior service credit
prior service credit Sec. 252. (a) A participant may, subject to the provisions of this section, include in his period of service— (1) civilian service in the executive, judicial, and legislative branches of the Federal Government, and in the District of Columbia government, prior to becoming a participant; and (2) active and honorable military or naval service in the Army, Navy, Air Force, Marine Corps, or Coast Guard of the United States prior to the date of the separation upon which title to annuity is based. (b) A participant may obtain prior civilian service credit in accordance with the provisions of paragraph (a)(1) of this section by making a special contribution to the fund equal to the percentage of his basic annual salary for each year of service for which credit is sought specified with respect to such year in the table relating to employees contained in section 4(c) of the Civil Service Retirement Act (5 U.S.C. 2254(c)), together with interest computed as provided in section 4 (e) of such Act (5 U.S.C. 2254 (e)). Any such participant may, under such conditions as may be determined in each instance by the Director, pay such special contributions in installments. 78 Stat. 1051 (c) (1) If an officer or employee under some oilier Government retirement system becomes a participant in the system by direct transfer, such officer or employee’s total contributions and deposits, including interest accrued thereon, except voluntary contributions, shall be transferred to the fund effective as of the date such officer or employee becomes a participant in the system. Each such officer or employee shall be deemed to consent to the transfer of such funds and such transfer shall be a complete discharge and acquittance of all claims and demands against the other Government retirement fund on account of service rendered prior to becoming a participant in the system. (2) No participant, whose contributions are transferred to the fund in accordance with the provisions of paragraph (c)(1) of this section, shall be required to make contributions in addition to those transferred for periods of service for which full contributions were made to the other Government retirement fund, nor shall any refund be made to any such participant on account of contributions made during any period to the other Government retirement fund at a higher rate than that fixed for employees by section 4(c) of the Civil Service Retirement Act (5 U.S.C. 2254(c)) for contributions to the fund. (3) No participant, whose contributions are transferred to the fund in accordance with the provisions of paragraph (c)(1) of this section, shall receive credit for periods of service for which a refund of contributions has been made, or for which no contributions were made to the other Government retirement fund. A participant may, however, obtain credit for such prior service by making a special contribution to the fund in accordance with the provisions of paragraph (b) of this section. (d) No participant may obtain prior civilian service credit toward retirement under the system fur any period of civilian service on the basis of which he is receiving or will in the future be entitled to receive any annuity under another retirement system covering civilian personnel of the Government. (e) A participant may obtain prior military or naval service credit in accordance with the provisions of paragraph (a)(2) of this section by applying for it to the Director prior to retirement or separation from the Agency. However, in the case of a participant who is eligible for and receives retired pay on account of military or naval service, the period of service upon which such retired pay is based shall not be included, except that in the case of a participant who is eligible for and receives retired pay on account of a service-connected disability incurred in combat with an enemy of the United States or caused by an instrumentality of war and incurred in line of duty during a period of war (as that term is used in chapter 11 of title 38, United States Code), or is awarded under chapter 67 of title 10 of the United States Code, the period of such military or naval service shall be included. No contributions to the fund shall be required in connection with military or naval service credited to a participant in accordance with the provisions of paragraph (a)(2) of this section. (f) Notwithstanding any other provision of this section or section 253 any military service (other than military service covered by military leave with pay) performed by a participant after December 1956 shall be excluded in determining the aggregate period of service upon which an annuity payable under this Act to such participant or to his widow or child is to be based, if such participant or widow or child is entitled (or would upon proper application be entitled) at the time of such determination, to monthly old-age or survivors’ benefits under section 202 of the Social Security Act, as amended (42 U.S.C. 402), 78 Stat. 1052based on such participant’s wages and self-employment income. If in the case of the participant or widow such military service is not excluded under the preceding sentence, but upon attaining age sixty-two, he or she becomes entitled (or would upon proper application be entitled) to such benefits, the aggregate period of service upon which such annuity is based shall be redetermined, effective as of the first day of the month in which he or she attains such age, so as to exclude such service.