What’s the Form I-9 you ask, and what’s all the fuss? All U.S. employers are responsible for completion and retention of Form I-9 for each individual they hire for employment in the United States. This includes citizens and noncitizens. On the form, the employer must verify the employment eligibility and identity documents presented by the employee and record the document information on the Form I-9. The list of acceptable documents can be found on page 4 of the forms.