(C)). (4) Continuing H–2A workers (A) Successive employment An H–2A worker is authorized to start new or concurrent employment upon the filing of a nonfrivolous H–2A petition, or as of the requested start date, whichever is later if— (i) the petition to start new or concurrent employment was filed prior to the expiration of the H–2A worker’s period of admission as defined in paragraph (3)(D)