You may file your withholding returns online at tap.utah.gov. You must include your FEIN and withholding account ID number on each return.Your Utah withholding account number — the 14-digit number ending in WTH. Ask your employer to fill out the employer's first insurance company. Report of injury form. This manual is not a complete guide to handling Arizona Workers' Compensation Claims and cannot cover every possible situation. Learn about the claim process and potential awards for work-related injuries. How Do I Qualify for Time-Loss Compensation? Presidente del Comité de Trauma: Michael F. Rotondo, MD, FACS. Director Médico del Programa de Trauma: John Fildes, MD, FACS.