---
kind: "section"
citation: "29 C.F.R. § 520.410"
title: "29"
number: "520.410"
heading: "How long does a messenger, learner, or apprentice certificate remain in effect?"
url: "https://uscodex.org/cfr/29/520.410"
---

# §520.410. How long does a messenger, learner, or apprentice certificate remain in effect?

- (a) Messenger and/or learner certificates may be issued for a period of not longer than one year.
- (b) Each special apprentice certificate shall specify the conditions and limitations under which it is granted, including the periods of time during which subminimum wage rates may be paid pursuant to a registered apprenticeship program.
- (c) No certificate may be issued retroactively.
- (d) The Administrator may amend the provisions of a certificate when necessary to correct omissions or defects in the original certificate or reflect changes in this part.

## Notes

### Authority

Authority: Sec. 14, 52 Stat. 1062, 1064 (29 U.S.C. 214); secs. 2-12, 60 Stat. 237-244; (5 U.S.C. 1001-1011); 52 Stat. 1068, as amended, 29 U.S.C. 214.

### Source

Source: 62 FR 64959, Dec. 9, 1997, unless otherwise noted.