5 C.F.R. § 846.301 General rules.
Title 5 - Administrative Personnel
(a) An individual who becomes covered by FERS as a result of an election under §846.201 is subject to the provisions of chapter 84 of title 5, United States Code and parts 841 through 845 of this chapter, except as provided in this part. (b) Civilian service performed before the effective date of the election under §846.201 is not creditable under FERS except as provided in this part.
Title 5: Administrative Personnel
PART 846—FEDERAL EMPLOYEES RETIREMENT SYSTEM—ELECTIONS OF COVERAGE
Subpart C—Effect of an Election To Become Subject to FERS
§ 846.301 General rules.