Once you hire someone you must immediately verify elgibility

Establish Employee Eligibility
(I-9):
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You must verify each employee's eligibility to work in the
United States by registering with E-Verify.

Complete I-9 within 3 days of hire.

Keep I-9 on file for at least 3 years from the date of hire
or 1 year after the date of termination.
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