---
kind: "section"
citation: "49 U.S.C. § 21107"
title: "49"
title_heading: "Transportation"
number: "21107"
heading: "Maximum duty hours and subjects of collective bargaining"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/49/21107"
units:
  - "Subtitle V — Rail Programs"
  - "Part A — Safety"
  - "Chapter 211 — Hours of Service"
---

# §21107. Maximum duty hours and subjects of collective bargaining


The number of hours established by this chapter that an [employee](/usc/49/21101.md?p=3) may be required or allowed to be on duty is the maximum number of hours consistent with safety. Shorter hours of service and time on duty of an [employee](/usc/49/21101.md?p=3) are proper subjects for collective bargaining between a [railroad carrier](/usc/49/20102.md?p=3) and its [employees](/usc/49/21101.md?p=3).


## Source credit

(Pub. L. 103–272, § 1(e), July 5, 1994, 108 Stat. 891.)

## Notes

| Historical and Revision Notes |  |  |
| --- | --- | --- |
| Revised<br>Section | Source (U.S. Code) | Source (Statutes at Large) |
| 21107 | 45:63a(d) (related to 45:64). | Mar. 4, 1907, ch. 2939, 34 Stat. 1415, § 3A(d) (related to § 4); added July 8, 1976, Pub. L. 94–348, § 4(d), 90 Stat. 819; June 22, 1988, Pub. L. 100–342, § 16(4), 102 Stat. 635. |
|  | 45:64. | Mar. 4, 1907, ch. 2939, § 4, 34 Stat. 1417; restated Dec. 26, 1969, Pub. L. 91–169, § 1, 83 Stat. 464; June 22, 1988, Pub. L. 100–342, § 16(5), 102 Stat. 635. |