U.S. Code of Federal Regulations
Regulations most recently checked for updates: Mar 22, 2023
(a) An election to be covered by FERS becomes irrevocable on the date it becomes effective.
(b) If, during the 1998 open enrollment period, an employee files an election on an SF 3109 to remain covered by CSRS, the employee may revoke such an election by filing another election during the 1998 open enrollment period.