Code of Federal Regulations Title 5. Administrative Personnel § 5.630.604 Earning rates

(1) An employee who accepts an appointment to, or occupies, a position for which the agency has prescribed the requirement that the incumbent accept assignments anywhere in the world as the needs of the agency dictate—15 days.

(2) An employee who is serving with a U.S. mission to a public international organization—15 days.

(3) An employee who is serving at a post for which payment of a foreign or nonforeign (but not a tropical) differential of 20 percent or more is authorized by law or regulation—15 days.

(4) An employee not included in paragraph (a)(1), (2), or (3) of this section who is serving at a post for which payment of a foreign or territorial (but not a tropical) differential of at least 10 percent but less than 20 percent is authorized by law or regulation—10 days.

(5) An employee not included in paragraph (a)(1), (2), (3), or (4) of this section—5 days.

(6) An employee included under (a)(1) through (5) of this section whose civilian service abroad is interrupted by a tour of duty in the Armed Forces of the United States, for the duration of such tour—0 (zero) days.