service employee
The term service employee means any person engaged in the performance of a contract entered into by the United States and not exempted under section 7, whether negotiated or advertised, the principal purpose of which is to furnish services in the United States (other than any person employed in a bona fide executive, administrative, or professional capacity, as those terms are defined in part 541 of title 29, Code of Federal Regulations, as of July 30, 1976, and any subsequent revision of those regulations); and shall include all such persons regardless of any contractual relationship that may be alleged to exist between a contractor or subcontractor and such persons.