5 C.F.R. § 551.103 — Coverage.
§ 551.103 Coverage. (a) Covered. Any employee of an agency who is not specifically excluded by another statute is covered by the Act. This includes any person who is: (1) Defined as an employee in section 2105 of title 5, United States Code; (2) A civilian employee appointed under other appropriate authority; or (3) Suffered or permitted to work by an agency whether or not formally appointed. (b) Not covered. The following persons are not covered by the Act: (1) A person appointed under appropriate authority without compensation; (2) A trainee; (3) A volunteer; or (4) A member of the Uniformed Services.