The Immigration and Nationality Act (INA) includes provisions addressing employment eligibility, employment verification, and nondiscrimination. These provisions apply to all employers.
Under the INA, employers may hire only persons who may legally work in the United States (i.e., citizens and nationals of the U.S.) and aliens authorized to work in the U.S. The employer must verify the identity and employment eligibility of anyone to be hired, which includes completing the Employment Eligibility Verification Form (I-9). Employers must keep each I-9 on file for at least three years, or one year after employment ends, whichever is longer.
More detailed information, including copies of explanatory brochures and regulatory and interpretative materials, may be obtained from local offices of the Employment Standards Administration’s (ESA) Wage and Hour Division (1-866-4USWAGE) and the Office of Federal Contract Compliance Programs (1-866-4-USA-DOL).
Official Website: http://www.dol.gov/elaws/