An employment verification letter is an acknowledgment from an employer confirming an employee's job status, position, salary, and duration. For the purpose of completing the I-9 form, please bring appropriate evidence of identity and employment eligibility with you when you report to work.Statement of verification: The letter should clearly state the purpose of the verification and what information is being confirmed. Here's how to write an employment verification letter, including information on formatting and proofreading. Employee verification letters prove your employment status. "Explore our form designed to confirm income and employment history of previous or current employees. Need to provide proof of employment status? Use this sample employment verification letter to create your own. Is the employee currently employed? This verbal signature is in accordance with Action Change Transmittal Letter No. 271.