29 CFR 503.18 : Labor (§ 0.735-1 To Parts 4908-4999) — (§ 500.0 To Parts 871-899) — Regulations Relating To Labor (Continued) (§ 500.0 To Parts 871-899) — Wage And Hour Division, Department Of Labor (§ 500.0 To Parts 871-899) — Regulations (§ 500.0 To § 697.4) — Enforcement Of Obligations For Temporary Nonimmigrant Non-Agricultural Workers Described In The Immigration And Nationality Act (§ 503.0 To § 503.56) — Enforcement (§ 503.15 To § 503.26) — 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.