What Employers Need to Know About I-9 Forms

Form I-9 may feel like one more piece of new-hire paperwork, but missing a deadline or entering information incorrectly can create compliance problems for an employer.

Every U.S. employer must properly complete Form I-9 for each person hired for employment in the United States. The form verifies the employee’s identity and authorization to work, and the requirement applies to citizens and noncitizens.

A consistent process can help employers complete forms on time, avoid common errors, protect employee information, and respond more confidently if their records are ever inspected.

Important: This article provides general educational information and is not legal advice. Employers should consult qualified legal or HR counsel regarding specific situations and review current guidance from U.S. Citizenship and Immigration Services.

What is Form I-9?

Form I-9, Employment Eligibility Verification, is the federal form employers use to verify the identity and employment authorization of people hired to work in the United States.

Both the employee and employer have responsibilities when completing the form. The employee provides the required information and presents acceptable documentation. The employer examines the documentation to determine whether it reasonably appears genuine and relates to the employee.

Employers should always use the current version of Form I-9 available through USCIS.

Who needs to complete an I-9 form?

Employers must complete and retain Form I-9 for each new employee hired to work in the United States, including U.S. citizens and noncitizen nationals.

Employers generally do not complete Form I-9 for true independent contractors. However, properly classifying a worker is important. Simply calling someone an independent contractor does not necessarily make that classification correct.

When must Form I-9 be completed?

Form I-9 has specific completion deadlines:

• Section 1: The employee must complete and sign Section 1 no later than the first day of employment for pay.
• Section 2: The employer or an authorized representative must complete Section 2 within three business days of the employee’s first day of work for pay.
• Supplement B: Employers use Supplement B when reverification or qualifying rehire documentation is required.

Employers should build these deadlines directly into the onboarding process instead of relying on someone to remember them after the employee starts.

Can an employer tell an employee which documents to provide?

Employees may choose which acceptable documents to present from the Lists of Acceptable Documents that accompany Form I-9.

Employers should not demand a particular document or request additional documentation because of an employee’s citizenship, immigration status, or national origin. The employer’s responsibility is to review the documentation the employee chooses to present and determine whether it reasonably appears genuine and related to that employee.

A consistent process matters here. The same standards should be used for every employee.

What are some common I-9 mistakes?

Seemingly small errors can create problems when forms are reviewed. Common I-9 mistakes include:

• Missing employee or employer signatures
• Incomplete or incorrect dates
• Missing the employee’s first day of employment
• Recording document information incorrectly
• Failing to complete the form on time
• Using an outdated version of Form I-9
• Mishandling reverification
• Allowing required work authorization documentation to expire
• Keeping records without a clear retention or destruction schedule

A second-person review or routine internal check can help catch errors while information is still easy to verify.

How long should employers retain I-9 forms?

After an employee leaves the company, Form I-9 must be retained for either:

• Three years after the employee’s first day of work, or
• One year after employment ends

The employer must keep the form until whichever date is later.

Because every employee can have a different destruction date, employers should calculate and track those dates instead of keeping every former employee’s form indefinitely.

Where should I-9 forms be stored?

Forms I-9 may be stored on paper, electronically, on microfilm, or on microfiche. They may also be kept on-site or at an off-site storage facility, provided the employer can produce them when required.

Consider keeping I-9 records separate from general personnel files. A separate, secure system can make the forms easier to retrieve while reducing the chance of exposing unrelated confidential employee information during an inspection.

Regardless of the storage method, employers should use safeguards that protect the personal information contained in the forms.

What happens during an I-9 inspection?

An administrative I-9 inspection generally begins when an employer receives a Notice of Inspection. Employers typically receive at least three business days to produce the requested forms and supporting records.

During the review, officials examine the employer’s records for compliance. Technical or procedural failures may come with an opportunity to make corrections, while substantive violations and uncorrected errors can lead to monetary penalties.

The three-business-day production window is one reason employers should organize their records before an inspection occurs.

Does using I-9 software guarantee compliance?

Electronic systems can make it easier to monitor deadlines, store forms, and manage employee records. However, using software does not remove the employer’s responsibility for accurate and timely completion.

Before choosing a system, employers should understand:

• Who enters and reviews the information
• How errors are identified and corrected
• How records are secured
• How forms can be retrieved during an inspection
• How retention and destruction dates are monitored
• What happens when an employee needs reverification

Technology can support a good process, but it cannot replace one.

How can employers create a better I-9 process?

A simple, repeatable process can significantly reduce errors.

1. Assign responsibility

Identify who is responsible for providing the form, checking completion dates, reviewing documents, and maintaining records.

2. Add I-9 deadlines to onboarding

Make Section 1 part of the employee’s first-day process and schedule Section 2 for completion within the required timeframe.

3. Use a consistent review checklist

Confirm that all required fields, dates, document details, signatures, and certifications are complete.

4. Keep records in one secure system

Use a centralized paper or electronic filing system that allows records to be retrieved quickly.

5. Separate current and former employee records

This makes retention tracking and scheduled destruction easier to manage.

6. Monitor reverification dates when required

Set reminders well before an employee’s work authorization expires. Reverification is not required simply because a document such as a driver’s license expires.

7. Review records periodically

Employers may conduct internal I-9 audits to support ongoing compliance, but the process should use neutral, consistent, and nondiscriminatory criteria.

8. Check current federal guidance

Form versions, procedures, and enforcement guidance can change. USCIS recommends checking its online employer handbook periodically for updates.

What should employers remember about I-9 compliance?

Effective I-9 compliance comes down to four basics:

• Timing: Complete each section by the applicable deadline.
• Accuracy: Review the form for missing or incorrect information.
• Consistency: Follow the same process for every employee.
• Organization: Keep records secure, accessible, and properly scheduled for destruction.

Treating Form I-9 as a standard part of onboarding can help reduce errors and improve audit readiness. Review your current process, make sure responsibilities are clear, and address missing information before an inspection puts your records under greater scrutiny.