Form I-9

Use Form I-9, Employment Eligibility Verification, to verify the identity and employment authorization of individuals hired for employment in the United States. All U.S. employers must properly complete Form I-9 for every individual they hire for employment in the United States. This includes citizens and aliens. Both employees and employers (or authorized representatives of the employer) must complete the form.

On the form, an employee must attest to their employment authorization. The employee must also present their employer with acceptable documents as evidence of identity and employment authorization. The employer must examine these documents to determine whether they reasonably appear to be genuine and relate to the employee, then record the document information on the employee’s Form I-9. Certain employers who choose to remotely examine the employee’s documentation under a DHS-authorized alternative procedure rather than via physical examination must indicate they did so by checking the box provided.

https://www.uscis.gov/sites/default/files/document/forms/i-9.pdf