The 3-Day Rule: Completing Form I-9 Without Costly Timing Mistakes
Section 1 by the first day of work, Section 2 within three business days. Here's how the Form I-9 timing rules really work — and where employers slip.
By Nora Ellison · Senior HR Compliance Writer
Reviewed by theComplianceToolsLibrary Editorial Team · · 5 min read
Form I-9 looks like a one-page formality, but its deadlines are strict and the fines for paperwork errors are real. Every U.S. employer must verify the identity and work authorization of each new hire — citizens included — on a properly timed I-9.
The timing rules come down to two deadlines. Miss either and you have a technical violation, even if the employee is fully authorized to work.
Two deadlines you can't miss
The I-9 splits responsibility between the employee and the employer, each with its own clock:
- Section 1 (employee): must be completed no later than the employee's first day of employment — but not before they accept the job offer.
- Section 2 (employer): you must examine the employee's documents and complete Section 2 within three business days of the first day of work.
The short-hire exception
If a job will last fewer than three business days, Section 2 must be completed by the end of the employee's first day. Don't assume the three-day window always applies.
Acceptable documents — let the employee choose
The employee presents either one document from List A (which proves both identity and work authorization, like a U.S. passport) or one document from List B (identity) plus one from List C (work authorization). You may not tell the employee which documents to present or demand more than the form requires — doing so can be document abuse, a form of discrimination.
Remote and alternative verification
Since 2023, qualified E-Verify employers in good standing may use a DHS-authorized alternative procedure to examine documents remotely over a live video call instead of in person. If you don't qualify, you must inspect original documents physically or use an authorized representative.
Sources
Frequently asked questions
When is Form I-9 due for a new employee?
The employee must complete Section 1 by their first day of work, and the employer must complete Section 2 within three business days of the first day. Shorter jobs (under three days) require Section 2 by the end of day one.
Can an employer tell an employee which I-9 documents to bring?
No. The employee chooses which acceptable documents to present. Specifying documents or demanding extra ones can constitute document abuse under federal anti-discrimination rules.
How long must we keep Form I-9?
Keep each I-9 for three years after the date of hire or one year after employment ends, whichever date is later.