Code of Federal Regulations Title 5. Administrative Personnel § 5.534.502 Coverage

(1) Senior-level (SL) positions classified above GS–15 pursuant to 5 U.S.C. 5108;  and

(2) Scientific or professional (ST) positions established under 5 U.S.C. 3104.

(1) Senior Executive Service positions established under 5 U.S.C. 3132, unless the incumbent of the position declined to convert to the SES and, under § 317.303 of this chapter, remained at grade GS–16, 17, or 18 (now the SL pay system) or under the ST pay system;

(2) Positions in the Federal Bureau of Investigation and Drug Enforcement Administration Senior Executive Service, Defense Intelligence Executive Service, or Senior Cryptologic Executive Service;  or

(3) Positions for which pay is fixed by administrative action and is limited to level IV of the Executive Schedule under 5 U.S.C. 5373.