---
kind: "section"
citation: "5 C.F.R. § 550.121"
title: "5"
number: "550.121"
heading: "Authorization of night pay differential."
url: "https://uscodex.org/cfr/5/550.121"
---

# §550.121. Authorization of night pay differential.

- (a) Except as provided by [paragraph (b)](#b) of this section, nightwork is regularly scheduled work performed by an employee between the hours of 6 p.m. and 6 a.m. Subject to [§ 550.122](/cfr/5/550.122.md), and except as otherwise provided in this subpart, an employee who performs nightwork is entitled to pay for that work at his or her rate of basic pay plus a night pay differential amounting to 10 percent of his or her rate of basic pay.
- (b) The head of a department may designate a time after 6 p.m. and a time before 6 a.m. as the beginning and end, respectively, of nightwork for the purpose of [paragraph (a)](#a) of this section, at a post outside the United States where the customary hours of business extend into the hours of nightwork provided by [paragraph (a)](#a) of this section. Times so designated as the beginning or end of nightwork shall correspond reasonably with the end or beginning, respectively, of the customary hours of business in the locality.
- (c) An employee is not entitled to night pay differential while engaged in training, except as provided in [§ 410.402](/cfr/5/410.402.md) of this chapter.

## Notes

### Amendments

[33 FR 12458, Sept. 4, 1968, as amended at 48 FR 3934, Jan. 28, 1983; 64 FR 69175, Dec. 10, 1999]

### Authority

Authority: 5 U.S.C. 5304 note, 5305 note, 5504(d), 5541(2)(iv), 5545a(h)(2)(B) and (i), 5547(b) and (c), 5548, and 6101(c); sections 407 and 2316, Pub. L. 105-277, 112 Stat. 2681-101 and 2681-828 (5 U.S.C. 5545a); section 2(h), Pub. L. 113-277, 128 Stat. 3005; E.O. 12748, 3 CFR, 1992 Comp., p. 316.

### Source

Source: 33 FR 12458, Sept. 4, 1968, unless otherwise noted.

### Amendments

[33 FR 12458, Sept. 4, 1968, as amended at 48 FR 3934, Jan. 28, 1983; 64 FR 69175, Dec. 10, 1999]