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HR compliance and I-9 / E-Verify software keeps you compliant by enforcing the federal timing, document, retention, and verification rules on every hire, then holding the dated records an audit asks for. For the Form I-9, it prompts Section 1 by the employee's first day of work for pay and Section 2 within three business days, validates entries to catch the errors that draw fines, and tracks the retention clock of three years after the hire date or one year after employment ends, whichever is later [1]. Where you use E-Verify, it creates the case within three business days of the start date and runs the mismatch, formerly called the tentative nonconfirmation, workflow, during which you cannot fire or penalize a worker who is contesting the result [6][8]. It also flags reverification of expiring work authorizations, and for employers enrolled in E-Verify in good standing it supports the DHS alternative procedure for examining documents over live video instead of in person [1][3][4]. Coverage across states comes from applying each state's E-Verify mandate plus the federal contractor rule, though that list changes often and the software does not transfer your legal liability [5][7]. This is general information rather than legal advice.