5 CFR § 846.201 - Elections to become subject to FERS.
(a) Employees and Members subject to CSRS on June 30, 1987. An individual who, on June 30, 1987, is employed in the Federal service or is a Member and who is covered by CSRS may elect to become subject to FERS. An election under this paragraph may not be made before July 1, 1987, or after December 31, 1987.
(b)
(1) Separated employees who are reemployed. A former employee who, after June 30, 1987, becomes reemployed and subject to CSRS may elect, during the 6-month period beginning on the date he or she becomes subject to CSRS, to become subject to FERS, except that an employee serving under an interim appointment under the authority of § 772.102 of this chapter is not eligible to elect to become subject to FERS.
(2) Separated employees who are employed with the District of Columbia Financial Management and Assistance Authority (Authority). A former employee who becomes employed with the Authority and subject to CSRS may elect, during the 6-month period beginning on the date he or she becomes subject to CSRS, to become subject to FERS, except that an employee serving under an interim appointment under the authority of § 772.102 of this chapter is not eligible to elect to become subject to FERS.
(c) Employees and Members not subject to CSRS.
(1) An employee or Member who is excluded from FERS coverage on January 1, 1987, by § 842.104 (d) or (f) of this chapter and who, on December 31, 1986, is not subject to CSRS may elect to become subject to FERS. An election under this paragraph (c)(1) may not be made before July 1, 1987, or after December 31, 1987.
(2) An employee who, on June 30, 1987, is not covered by CSRS, but later becomes so covered, may elect to become subject to FERS. An election under this paragraph (c)(2) must be made during the 6-month period beginning on the date he or she becomes subject to CSRS.
(3) An employee who would be subject to CSRS except for the exclusions in § 831.201 of this chapter, but is not excluded from FERS by 5 U.S.C. 8401 nor by § 842.105 of this chapter, is deemed eligible to make an election of FERS coverage under this section. An election under this paragraph (c)(3) must be made during the period beginning July 1, 1987, and ending December 31, 1987, or, if later, during the 6-month period beginning on the date the employment described in this paragraph (c)(3) begins.
(d) Exceptions.
(1) An individual who is an employee of the government of the District of Columbia may not elect to become subject to FERS except an individual so employed who is covered by CSRS and eligible for FERS coverage by operation of section 11246 of Pub. L. 105–33, 111 Stat. 251, or section 7(e) of Pub. L. 105–274, 112 Stat. 2419.
(2) A Member who has irrevocably elected, by written notice to the official by whom the Member is paid, not to participate in FERS may not elect to become subject to FERS during the same continuous period of service.
(3) An employee or reemployed annuitant whose appointment is excluded from FERS coverage by law or regulation may not become subject to FERS by reason of an election under this section except as specified in paragraph (c) of this section or as otherwise provided by law.
(4) An election under this section may not be made by an individual who is ineligible for social security coverage.
(e) Effective date. An election made under this section is effective with the first pay period beginning after the date the election is properly filed with the employing office.
(f) Irrevocability. An election made under this section is irrevocable.