To get proof of employment, you may need to request a verification of employment letter from your current or previous employer. Employment verification in California involves confirming an individual's work history.Next, provide the form to each employer for the last ten years for verification. Discover 7 different employment verification letter templates with different details for proof of employment or future job opportunities. The hiring process in California can be confusing: there are various required federal and state documents that must be reviewed and signed for new employees. This article explains everything about employment verification letter meaning, how to get it, tips, email template and more. All U.S. employers must properly complete Form I9 for every individual they hire for employment in the United States. Log in to UCPath external site (opens in a new window) . As an employer, you or your authorized representative must complete and sign Section 2 of Form I9, Employment Eligibility Verification, within 3 business days. From USICS: M274 Handbook for Employers at page 48 Q. As an employer, do I have to fill out all the Forms I9 myself?