Employees who work on an irregular or occasional basis.
CFR · 2024-01-01 · US · Title 5
An employee who works on an irregular or occasional basis or is a special Government employee as defined in 18 U.S.C. 202(a) is subject to the provisions of the applicable subpart of this part when he or she is on duty.
official document · source cfr-2024 · id 5:§ 734.601