Best Practices for I-9 Reverification

Few HR compliance tasks are as risky as I-9 reverification. One missed expiration date, reverification, a missing signature, or an incorrect document can turn into an audit finding. The good news? With the right approach, I-9 reverification can become an efficient, low-stress part of your HR compliance strategy.

Top Takeaways for HR

• HR must use Supplement B (formerly Section 3) to update existing I-9s rather than creating new forms, ensuring that reverification is only triggered by expiring work authorization and never for U.S. citizens or lawful permanent residents.
• To avoid "fire drills" and audit findings, organizations should implement an automated tracking system that initiates employee notifications at 120, 90-, 60-, and 30-day intervals before employee work authorization documentation expires.
• Employers must avoid "over-reverification" such as requesting specific documents, running reverification through E-Verify, or re-checking List B identity documents, to prevent significant legal risk under federal anti-discrimination provisions.

What is I-9 Reverification?

Let’s start at the beginning. What is an I-9 reverification? Simply put, I‑9 reverification is the process of confirming that an employee’s work authorization remains valid when their previously submitted temporary documentation expires.

When Is I-9 Reverification Actually Required?

You must complete I-9 reverification when:

• Prior to the date when an employee’s Employment Authorization Document (EAD) expires.
• Prior to a temporary visa-based work authorization reaches its expiration date.
• An employee presented a document that had a defined expiration tied to their work eligibility.

In these cases, you’ll complete Supplement B (formerly Section 3 until it was renamed to Supplement B on August 1, 2023) of the existing Form I-9, and not a new Form I-9, to document the updated authorization.

So, when do you not reverify? This is where many employers get into trouble.

You do not reverify:

• U.S. citizens or noncitizen nationals
• Lawful permanent residents who presented a Permanent Resident Card
• List B identity documents
• Any document that does not relate to employment authorization

Additionally, “over reverification” or requesting different or additional documents than required, can actually create discrimination risk under anti-discrimination provisions enforced by agencies such as the U.S. Department of Justice.

HR Pro Tip: When in doubt, focus only on whether the employee’s work authorization has expired and not whether their identity document has.

Supplement B: Your Best Friend in Reverification

When it comes to how to complete I-9 reverification, the answer is straightforward: use Supplement B of the original Form I-9, and NOT a new Form I-9. Depending on the version of the Form I-9 at the time of hire, the section may be listed as Section 3 instead of Supplement B. Supplement B has space for three reverification occasions.

Do not complete a new Form I-9 unless:

• The original version is no longer valid and Supplement B/Section 3 cannot be used

OR

• You are rehiring the individual more than three years after their original Form I-9 was completed

In summary, Supplement B captures:

• The new document title
• Document number
• Expiration date, if any
• Employer certification

While it may seem innocent, completing a new Form I-9 unnecessarily can create duplicate records, confusion during audits, and potential findings and violations for improper completion.

Best Practices for Managing the Reverification Process

Now let’s move from rules to reality. Because in the real world, I-9 reverification often lives in a spreadsheet and can get pushed to the side and forgotten to check it until it’s too late.

Implement a Proactive Tracking and Alert System

Manual tracking, like spreadsheets or Outlook calendar reminders, often leaves room for human error. HR teams are busy and competing priorities happen every day.

A proactive tracking system should:

• Flag upcoming expirations at least 120 days in advance.
• Send automated reminders to HR and the employee.
• Document communication attempts.
• Store updated documents securely.
• Maintain a centralized log or dashboard showing each employee with temporary work authorization, the document presented, expiration date, and the status of any pending reverification.
• Provide visibility into completed reverifications so HR leaders can quickly confirm that Supplement B updates are being completed correctly and on time.

HR IRL: Imagine discovering during an internal audit that an employee’s work authorization expired three months ago. Now you’re scrambling to correct it while mitigating compliance risk. Proactive tracking eliminates this kind of scenario.

Companies with higher volumes of temporary work authorization may also consider assigning ownership of the reverification tracker to specific HR compliance roles. This creates accountability for monitoring expiration dates, validating updates, and ensuring the reverification process is consistently applied.

Another option is to outsource I-9 management and put that responsibility on your vendor partner. I-9 management companies can help you manage the reverification process so none slip through the cracks.

Remind Employees Early

Don’t wait until the week of expiration. Best practice is to notify employees:

• 120 days before expiration
• 90 days before expiration
• 60 days before expiration
• 30 days before expiration

This gives employees time to obtain renewal documentation, especially important for categories that require government processing time.

Empathetic and Clear Communication

Reverification can be stressful for employees. They may feel singled out or anxious about their status.

Your communication should:

• Clearly explain why reverification is required.
• Reinforce that this is a routine compliance process.
• Avoid requesting or suggesting specific documents. Simply provide the acceptable document list. It’s ultimately up to the employee to decide which document(s) to present.

Audit Before You Archive

Before filing away a completed Supplement B:

• Remember to insert the employee’s name at the top
• Confirm the document title and number are accurate.
• Verify the expiration date is correct.
• Ensure the employer certification is signed and dated.
• Double-check that no extra documents were requested.
• Remember to check the “alternative procedure” box if you used an alternative procedure to review the employee’s documents

Whenever possible, have a second set of eyes review it. Internal I-9 audits are one of the most effective ways to prevent larger problems later.

Additionally, keep in mind that I-9 reverification history must be retained as long as the original I-9 is retained. If the “base” form stays, then Supplement B stays too.

Companies should also periodically assess their reverification process itself, not just the individual forms. This means confirming that expiration tracking systems are accurate, reminders are being sent, and Supplement B updates are completed before authorization expires.

One effective self-audit strategy is to conduct randomized internal reviews of existing I-9s. For example, HR teams may select a group of forms for review by pulling:

• Ten I-9s for employees with temporary work authorization that required reverification
• Ten I-9s for employees who do not need reverification

Randomizing samples across departments, hire dates, or work locations helps ensure the process is being applied consistently throughout the company.

During these reviews, confirm that:

• The employee’s name is at the top
• The document title and number are accurate.
• The expiration date is correct.
• The employer certification is signed and dated.
• No extra documents were requested.
• The “alternative procedure” box is checked if you used an alternative procedure to review the employee’s documents

This structured sampling approach allows you to identify process gaps early and correct them before an audit.

Common Reverification Pitfalls to Avoid

Pitfalls exist in most processes, and I-9 reverification is no exception. Even experienced HR teams fall into the following traps.

Ignoring Automatic Extensions

Certain work authorization categories, such as Temporary Protected Status (TPS) or qualifying EAD renewals, may receive automatic extensions announced in the Federal Register. It is very important to keep an eye on TPS revocations and actions as they are constantly changing and being updated. Check for TPS alerts here.

Failing to track these extensions can lead to:

• Unnecessary reverification
• Incorrect termination
• Audit findings

Stay current with government updates and document the basis for any automatic extension applied.

Tracking these extensions should also be integrated into your reverification monitoring process so HR does not mistakenly initiate reverification or incorrectly conclude that work authorization has expired.

Requesting Additional or Different Documents

You cannot:

• Ask for a specific document (e.g., “Bring your green card”).
• Require more documents than the I-9 process allows.
• Reject valid documents that reasonably appear genuine.

This is one of the most common discrimination findings during enforcement actions.

Poor Record Retention

Reverification documentation must remain attached to the original I-9 and follow the same retention timeline. Separating or discarding Supplement B can create incomplete audit files.

Running Reverification Through E-Verify

Another common mistake is attempting to process reverification through E-Verify. E-Verify is designed for employment eligibility verification at the time of hire and generally should not be used for routine reverification of existing employees.

Pushing reverification through E-Verify when it is not required can create compliance complications and unnecessary records. Instead, reverification should typically be completed by updating Supplement B of the existing Form I-9.

Companies should periodically confirm that their internal procedures clearly distinguish between the initial employment verification process and reverification requirements.

Leverage Technology for Efficiency

If you’re still managing I-9 reverification in spreadsheets, it’s time to reassess. Here’s why:

Manual tracking has many challenges like:

• Relies on human memory.
• Prone to missed reminders.
• Makes audit trails difficult.
• Increases exposure during enforcement.

On the flipside, digitizing your I-9 process creates:

• Automated alerts.
• Standardized workflows.
• Secure storage of sensitive data.
• Consistent documentation practices.
• Built-in reporting allows HR leaders to monitor upcoming reverifications and confirm that all required updates have been completed.

For global or multi-state employers, the stakes are even higher. Sensitive employee data must be protected while meeting complex compliance obligations.

That’s where HR compliance as a service (HR CaaS) solutions come in. Instead of treating I-9 reverification as a reactive process, HR CaaS weaves compliance into daily operations, supported by technology, expertise, and ongoing monitoring.

What I-9 Reverification Means for Your Organization

I-9 reverification is a critical component of workforce HR compliance, but it doesn’t have to feel like a burden.

When done right, it:

• Protects your company during audits.
• Supports equal employment opportunity and meritocracy.
• Demonstrates a culture of fairness and consistency.
• Reduces operational risk.

By adopting proactive best practices, such as clear policies, automated tracking, internal audits, and technology-enabled processes, HR can transform I-9 reverification from a compliance headache into a controlled, repeatable. and efficient process.

If your team is stretched thin, partnering with an HR CaaS provider, such as OutSolve, can provide the infrastructure, oversight, and expertise needed to stay audit-ready throughout the year.

It can also help your I-9 compliance become less about reacting to deadlines and more about protecting both your people and your company.

Additional I-9 Reverification Resources

• USCIS: Completing Supplement B

• USCIS: Instructions for Completing Form I-9

• E-Verify.gov: Form I-9 Employment Eligibility Verification Employee Information Sheet

I-9 Reverification FAQs

1. What is an I-9 reverification?

   I-9 reverification is the process of confirming that an employee’s temporary work authorization remains valid when their previously submitted documentation expires. It is completed using Supplement B (formerly Section 3) of the existing Form I-9.

2. When is I-9 reverification required?

   I-9 reverification is required when an employee’s employment authorization documentation expires. It is not required for U.S. citizens, lawful permanent residents (even if their card expires), or identity documents.

3. How Is I-9 Reverification Completed?

   To complete I-9 reverification:

   1. Review the employee’s updated employment authorization document.
   2. Complete Supplement B of the original Form I-9.
   3. Record the document title, number, and expiration date (if applicable).
   4. Sign and date the employer certification.
   5. Retain the updated form with the original I-9.
   6. Companies should also ensure the reverification is documented in their tracking system so the employee’s next authorization milestone, if applicable, can be monitored.

4. Can I ask for a specific document during reverification?

   No. You must allow the employee to choose which acceptable document to present from the approved list. Requesting specific documents can create discrimination risk.

5. How long should I retain I-9 reverification records?

   Reverification records must be retained for the same period as the original I-9 form, typically three years after hire or one year after termination, whichever is later.