Definitions.

CFR · 2024-01-01 · US · Title 5

(1)(i) Are paramount in influence or weight; that is, constitute the basic reasons for the existence of the position; (ii) Occupy a substantial portion of the individual's working time over a typical work cycle; and (iii) Are assigned on a regular and recurring basis. (2) Duties that are of an emergency, incidental, or temporary nature cannot be considered “primary” even if they meet the substantial portion of time criterion. In general, if an employee spends an average of at least 50 percent of his or her time performing a duty or group of duties, they are his or her primary duties. (1) Is clearly in the nuclear materials transportation field; (2) Is in an organization of the Department of Energy having a nuclear materials transportation mission; and (3) Is either— (i) Supervisory; that is, a position whose primary duties are as a first- (ii) Administrative; that is, an executive, managerial, technical, semiprofessional, or professional position for which experience in a primary nuclear materials courier position is a prerequisite.

official document · source cfr-2024 · id 5:§ 842.902