Registration with the Arizona Employment Service is required to continue receiving Unemployment Insurance (UI) Benefits. COMPLETING ARIZONA FORM A-4.• All employees are required to complete Form A-4. Completion of this application form in no way constitutes an offer of employment. The information is required to provide the agency with information. An injured worker must file a workers' compensation claim in writing with the Commission within one year after the injury occurred. If you are hiring employees in Arizona, here is a comprehensive guide to the essential new hire onboarding paperwork you need. Complete this form within the first five days of your employment to select an Arizona withholding percentage. I have 6 days until first day and I still can't setup my A-Z account. Access a complimentary employment application template here, and gain insight into the essential questions to incorporate.