What NAFI service can employees elect to credit toward retirement eligibility under CSRS or FERS?
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
(a) Employees may elect to credit under this subpart any NAFI service that isn't already creditable under 5 U.S.C. 8332(b)(16), or under 5 CFR part 847, subpart D.
(b) NAFI service used to qualify for an immediate annuity based on an election in paragraph (a) of this section cannot be credited in a NAFI retirement plan for any purpose including eligibility and calculations of NAFI benefits.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.