5 CFR 842.806: Mandatory separation.

(a) The mandatory separation provisions of 5 U.S.C. 8425 apply to all law enforcement officers and firefighters, including those in secondary positions, and air traffic controllers, with the exception of a civilian employee of the Department of Transportation or the Department of Defense who is the immediate supervisor of a person described under 5 U.S.C. 2109(1)(B) (i.e., a second-level supervisor). A mandatory separation under 5 U.S.C. 8425 is not an adverse action under part 752 of this chapter or a removal action under part 359 of this chapter.

(b) Exemptions from mandatory separation are subject to the conditions set forth under 5 U.S.C. 8425. An exemption may be granted at the sole discretion of the head of the employing agency or by the President in accordance with 5 U.S.C. 8425(c).

(c) In the event that an employee is separated mandatorily under 5 U.S.C. 8425, or is separated for optional retirement under 5 U.S.C. 8412 (d) or (e), and OPM finds that all or part of the minimum service required for entitlement to immediate annuity was in a position that did not meet the requirements of a primary or secondary position and the conditions set forth in this subpart or, if applicable, in part 831 of this chapter, such separation will be considered erroneous.