The Immigration Reform and Control Act (IRCA) of 1986 requires every employer, regardless of size, to verify that an individual is authorized to be employed in the United States. You face civil and criminal penalties for knowingly hiring, referring, recruiting or continuing to employ individuals who are not authorized to work.
Federal immigration law makes it unlawful to:
You must verify every new hire’s employment eligibility by completing a Form I-9 within three business days of the employee's first day of work for pay. For example, if the employee starts work for pay on Monday, the employer must complete its portion of the I-9 form by Thursday by examining documents that confirm both identity and employment eligibility. The acceptable documentation is listed on the back of the I-9 - Employment Eligibility Verification, which you must complete for every employee.
If you comply with the verification requirements when hiring an individual but later discover that the employee isn’t authorized to work in the U.S., you cannot continue to employ that person. Similarly, it is unlawful to contract an undocumented worker for labor if you know that the individual is unauthorized to work in the U.S.
You cannot require more or different identity and work authorization documents than specified by the United States Citizenship and Immigration Services (USCIS). You must honor documents that appear valid on their face.2
If an employee can produce the required verification of eligibility to work, it’s illegal to discriminate against him/her on the basis of:
California also protects workers against certain unfair immigration-related practices. For more information, see ”Unfair Immigration-Related Practices” in Immigrant Workers and Discrimination/Retaliation Protection.
Form I-9 is not required for:
1. 8 U.S.C. sec. 1324a(a)(1)
2. 8 U.S.C. sec. 1324b(a)(6)