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.Letter must state your name, position, title, job duties, dates of employment, and full or part-time status - including the number of hours worked per year. This article explains everything about employment verification letter meaning, how to get it, tips, email template and more. Provide them with the University of California Employer Code: 15975; Provide them with your Social Security Number. Use Form I9 to verify the identity and employment authorization of individuals hired for employment in the United States. Easily create and download salary verification letters for employment proof and income confirmation. 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) . The E-Verify process begins with a completed Form I-9, Employment Eligibility Verification.