5 CFR § 550.171
Authorization of pay for Sunday work
November 4, 2020
(a) An employee is entitled to pay at his or her rate of basic pay plus premium pay at a rate equal to 25 percent of his or her rate of basic pay for each hour of Sunday work (as defined in §550.103).
(b) An employee is not entitled to Sunday premium pay while engaged in training, except as provided in §410.402 of this chapter.
[60 FR 33098, June 27, 1995, as amended at 60 FR 67287, Dec. 29, 1995; 64 FR 69175, Dec. 10, 1999; 72 FR 12036, Mar. 15, 2007; 76 FR 52539, Aug. 23, 2011]