I-9 Compliance Guide: Avoiding Costly Mistakes in Employment Verification

6/7/2026

The Form I-9 is one page long and generates more per-employee penalties than almost any other HR document. The reason is structural: I-9 errors are uniform. Whatever your organization does wrong, it does wrong on every form — so an audit of 400 employees finds 400 violations.

Quick answer: Every employer must complete Form I-9 for every employee hired after November 6, 1986. Section 1 is due no later than the first day of employment; Section 2 within three business days. Penalties apply per form for substantive and uncorrected technical violations, and separate, larger penalties apply for knowingly employing unauthorized workers. Over-documentation is itself a discrimination violation.

The Core Timeline

Step	Who	Deadline
Section 1	Employee	No later than the first day of employment — and no earlier than acceptance of a job offer
Section 2	Employer	Within three business days of the first day of employment
Reverification	Employer	No later than the expiration date of the employee's temporary employment authorization
Retention	Employer	Three years after the date of hire, or one year after employment ends — whichever is later

Note the "whichever is later" formulation. It means a long-tenured employee's form is retained for one year after separation, while a short-tenured employee's form is retained for three years from hire. Calculate the date at separation and record it.

Section 1: The Employee's Part

Common failures:

• Completed late — after the first day of employment.
• Completed too early — before a job offer has been accepted, which raises a discrimination concern.
• Missing attestation checkbox or missing signature.
• Missing information required for the selected status, such as the alien registration number or Form I-94 number where applicable.
• Preparer/translator certification not completed when someone assisted.
• Employer completing Section 1 for the employee. The employee must complete it themselves, with assistance documented in the preparer section.

The employer's obligation is to ensure Section 1 is complete — review it the same day, not at the end of the week.

Section 2: The Employer's Part — and the Discrimination Trap

The employee presents documentation establishing identity and work authorization: either one document from List A, or one from List B plus one from List C.

The critical rule: the employee chooses which documents to present. The employer may not specify, suggest, or prefer particular documents. This is where well-intentioned compliance becomes a violation:

Practice	Problem
"Please bring your green card or work permit."	Document specification — a discrimination violation
Requiring more documents than needed	Over-documentation — a discrimination violation
Asking non-citizens for extra proof	Citizenship status discrimination
Rejecting a document that reasonably appears genuine	Document abuse
Reverifying List B identity documents	Improper — List B documents are not reverified
Reverifying a Permanent Resident Card	Improper — lawful permanent residents are not reverified even when the card expires

The employer's standard is whether the document reasonably appears to be genuine and to relate to the person presenting it. You are not a document examiner, and you are not permitted to act as one.

Reverification: What Is and Is Not Reverified

• Reverify: expiring temporary employment authorization documented in Section 1 or Section 2.
• Do not reverify:S. citizens or noncitizen nationals; lawful permanent residents, including when the Permanent Resident Card expires; List B identity documents.
• Do not reverify early. Requesting new documents well before expiration can constitute document abuse.
• Automatic extensions apply to certain employment authorization documents in defined circumstances — verify current guidance before treating an expiration date as final.

Build a tickler system for reverification dates. Missing a reverification date is a substantive violation; performing an unnecessary one is a discrimination violation. Both directions carry exposure.

Remote Hires and Electronic Completion

Physical examination of documents is the default. An alternative remote examination procedure is available to qualifying employers under defined conditions, generally requiring E-Verify participation and good standing, with specific steps including live video interaction and retention of document copies.

Two practical rules:

• Confirm eligibility before using any alternative procedure, and document that you met each condition.
• Apply your chosen method consistently. Using remote examination for some employees and physical examination for others, based on characteristics rather than a consistent policy, creates a discrimination risk.

Authorized representatives may complete Section 2 on the employer's behalf — but the employer remains liable for errors. Choose representatives carefully and give them written instructions.

Storage and Retention

• Store I-9s separately from personnel files. This is not merely tidy — it limits what an auditor sees and protects personnel information.
• Purge on schedule. Retaining forms past the required period expands audit exposure for no benefit. Run a purge annually.
• Be consistent about document copies. Retaining copies is optional (mandatory for E-Verify users). If you retain them, retain them for everyone — selective retention is a discrimination indicator.
• Electronic storage is permitted subject to specific integrity, accuracy, accessibility, and audit trail requirements.

Conducting an Internal I-9 Audit

1. Consider counsel involvement before starting, particularly if you suspect systemic problems.
2. Audit the whole population or a neutral, non-discriminatory sample. Auditing only employees who appear foreign-born is itself a violation.
3. Check completeness of Sections 1, 2, and 3 against a checklist.
4. Check timing — Section 1 dates and Section 2 within three business days.
5. Check document sufficiency — correct List A or List B plus C combination, all fields recorded.
6. Check reverification status and identify missed and improper reverifications.
7. Correct properly. Draw a line through the error, enter the correct information, and initial and date the correction. Never use correction fluid, never backdate, and never create a replacement form without documenting why.
8. Document the audit — scope, method, findings, and corrections. Good-faith correction can mitigate penalties.
9. Fix the process that produced the errors, then re-audit new hires the following quarter.

Penalties and Enforcement

Civil penalties apply per form for substantive violations and uncorrected technical violations, with amounts adjusted annually for inflation. Separate and substantially larger penalty ranges apply for knowingly hiring or continuing to employ unauthorized workers, escalating for repeat offenses. Discrimination violations carry their own penalties, and pattern-or-practice violations can carry criminal exposure.

Enforcement typically begins with a Notice of Inspection, which generally provides three business days before forms must be produced. Three business days is not enough time to fix anything — which is the entire argument for auditing proactively.

E-Verify

E-Verify is voluntary at the federal level for most employers but mandatory for certain federal contractors and for employers in several states. Participation adds obligations: creating cases within defined timeframes, following tentative nonconfirmation procedures precisely, retaining document copies, and displaying required notices.

The most consequential E-Verify rule: an employer may not take adverse action against an employee who contests a tentative nonconfirmation while the case is pending. Terminating during that window is a common and serious error.

Frequently Asked Questions

When must Form I-9 be completed?

Section 1 no later than the first day of employment; Section 2 within three business days of the first day of employment.

Can we ask for specific documents?

No. The employee chooses which acceptable documents to present. Specifying, suggesting, or preferring documents is a discrimination violation.

Do we reverify permanent residents when their card expires?

No. Lawful permanent residents are not reverified, even when the Permanent Resident Card expires.

Should we keep copies of documents?

Optional for most employers, mandatory for E-Verify participants. Whatever you choose, apply it uniformly to everyone.

How do we correct an old error?

Line through the error, enter the correct information, initial and date the correction. Never backdate, never use correction fluid, and document the audit that identified it.

Build I-9 Competence Before the Notice Arrives

I-9 compliance rewards process and punishes improvisation. The organizations that pass audits are the ones that trained the people completing the forms and audit themselves annually.

The HR Generalist Certificate Program covers hiring compliance including employment verification. For teams building broader compliance depth, see HR compliance training.

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Additional resources: HR Compliance FAQ | HR Best Practices | USCIS I-9 Central