I9 form 2Form I-9 is used for verifying the identity and employment authorization of individuals hired for employment in the United States. This includes citizens and noncitizens. Both employees and employers (or authorized representatives of the employer) must complete the form. On the form, an employee must attest to his or her employment authorization. The employee must also present his or her employer with acceptable documents evidencing identity and employment authorization.

Notaries complete I-9 forms in the capacity of an authorized representative of the employer. Notaries are recommended by employers because of their ability to verify the identity of individuals, their expertise in witnessing signatures and their skillfulness in reviewing official documents.