29 CFR § 503.18 - Validity of temporary labor certification.
---
identifier: "/us/cfr/t29/s503.18"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "29 CFR § 503.18 - Validity of temporary labor certification."
title_number: 29
title_name: "Labor"
section_number: "503.18"
section_name: "Validity of temporary labor certification."
chapter_name: "WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR"
subchapter_number: "A"
subchapter_name: "REGULATIONS"
part_number: "503"
part_name: "ENFORCEMENT OF OBLIGATIONS FOR TEMPORARY NONIMMIGRANT NON-AGRICULTURAL WORKERS DESCRIBED IN THE IMMIGRATION AND NATIONALITY ACT"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "8 U.S.C. 1101(a)(15)(H)(ii)(b); 8 U.S.C. 1184; 8 CFR 214.2(h); 28 U.S.C. 2461 note (Federal Civil Penalties Inflation Adjustment Act of 1990); Pub. L. 114-74 at sec. 701."
regulatory_source: "80 FR 24130, Apr. 29, 2015, unless otherwise noted."
cfr_part: "503"
---
# 503.18 Validity of temporary labor certification.
(a) *Validity period.* A temporary labor certification is valid only for the period of time between the beginning and ending dates of employment, as approved on the *Application for Temporary Employment Certification.* The certification expires on the last day of authorized employment.
(b) *Scope of validity.* A temporary labor certification is valid only for the number of H-2B positions, the area of intended employment, the job classification and specific services or labor to be performed, and the employer specified on the approved *Application for Temporary Employment Certification.* The temporary labor certification may not be transferred from one employer to another unless the employer to which it is transferred is a successor in interest to the employer to which it was issued.