5 C.F.R. § 839.602

What if I don't make an election?

(a) If your qualifying retirement coverage error was not previously corrected and you fail to make an election within the time limit under § 839.611(a), your retirement coverage is summarized in the following chart:

If you are in: | And you belong in: | You are considered to have elected:; CSRS or CSRS Offset | FERS | CSRS Offset.; FERS | CSRS, CSRS Offset or Social Security-Only | FERS.; CSRS or CSRS Offset | Social Security-Only | CSRS Offset.

(b) If your qualifying retirement coverage error was previously corrected and you fail to make an election within the time limit under § 839.611(b), you are considered to have elected to remain in your current retirement plan.