Code of Federal Regulations Title 5. Administrative Personnel § 5.9701.302 Coverage

(1) Employees who would otherwise be covered by the General Schedule pay system established under 5 U.S.C. chapter 53, subchapter III;

(2) Employees who would otherwise be covered by a prevailing rate system established under 5 U.S.C. chapter 53, subchapter IV;

(3) Employees in senior-level (SL) and scientific or professional (ST) positions who would otherwise be covered by 5 U.S.C. 5376;  and

(4) Members of the Senior Executive Service (SES) who would otherwise be covered by 5 U.S.C. chapter 53, subchapter VIII, subject to § 9701.102(d).