(a) Validity period. A TLC is valid only for the period of employment as approved on the CW–1 Application for Temporary Employment Certification. The certification expires after the last day of authorized employment, including any approved extensions thereof.

(b) Scope of validity. A TLC is valid only for the number of CW–1 positions, the places of employment located in the Commonwealth, the job classification and specific services or labor to be performed, and the employer(s) specified on the approved CW–1 Application for Temporary Employment Certification, including any approved modifications. The TLC 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.