847.433—Exclusion from FERS for future service.
(a)
An employee who elects NAFI retirement system coverage with credit for FERS service under § 847.431(a) is excluded from coverage under FERS during that and all subsequent periods of employment, including any periods of service as a reemployed annuitant.
(b)
FERS service which becomes creditable in a NAFI retirement benefit based on an election under § 847.431 is not creditable for any purpose under FERS.