A new hire sits in your office on their first morning. Before they set up their computer, meet the team, or review their first project, they must complete their initial paperwork. The Form I-9 is one of the most time-sensitive documents you will handle as an HR professional.
Federal law requires all U.S. employers to verify the identity and employment authorization of every new employee. While the form itself is brief, minor administrative errors can lead to costly penalties during an audit. Managing this process correctly from day one is essential to keeping your organization compliant.
What is Form I-9 and why does it matter for your business?
Form I-9 — officially issued by U.S. Citizenship and Immigration Services (USCIS) — verifies that your new hires are legally authorized to work in the United States. Every employer must complete a Form I-9 for every individual they hire for employment in the U.S. This rule applies to citizens and noncitizens alike.
Completing this paperwork is a mandatory federal requirement. Failing to complete, retain, or present these forms during a government inspection can result in significant financial penalties for your business. Because immigration laws and verification requirements are complex, you should always consult your legal counsel for specific compliance questions regarding your workforce.
Step 1: Having the employee complete Section 1
The verification process starts with the employee. On or before their first day of work for pay, the new hire must complete and sign Section 1 of the Form I-9.
In this section, the employee provides their basic personal details:
- Full legal name and any other names used
- Current physical address
- Date of birth
- Social Security number — this is optional unless your company participates in E-Verify
The employee must also attest to their citizenship or immigration status by checking one of four boxes: a citizen of the United States, a noncitizen national, a lawful permanent resident, or a noncitizen authorized to work.
For example, if a new marketing coordinator named Sarah starts her new role on a Monday morning, she must fill out and sign Section 1 by the end of that Monday. If Sarah needs assistance due to a language barrier or physical limitation, a translator or preparer can help her. However, that person must also complete the dedicated preparer and translator certification section on the form.
Step 2: Reviewing documents and completing Section 2
Once Section 1 is complete, the clock starts ticking for you. You have exactly three business days from the employee's first day of work to complete Section 2. You must physically inspect original, unexpired documents that prove the employee's identity and authorization to work.
The government categorizes acceptable documents into three lists:
- List A: Documents that establish both identity and employment authorization — such as a U.S. passport or Permanent Resident Card.
- List B: Documents that establish identity only — such as a state-issued driver's license or school ID card.
- List C: Documents that establish employment authorization only — such as an unrestricted Social Security card or a birth certificate.
If an employee presents one document from List A, they do not need to present anything else. If they do not have a List A document, they must present one document from List B and one document from List C.
Let's look at a realistic example. If Sarah starts her job on Monday, October 1, you must physically inspect her documents and complete Section 2 by Thursday, October 4. Sarah decides to bring her original U.S. passport. Because a passport is a List A document, it satisfies both requirements. You examine the passport to ensure it reasonably appears to be genuine and relates to her. You then record the document title, issuing authority, document number, and expiration date in Section 2, and sign the form.
You must never tell an employee which documents to bring. Sarah has the right to choose which acceptable documents she wants to present from the official list.
How to store and retain Form I-9 records safely
Once you complete the form, you do not mail it to any government agency. Instead, you must keep it on file. The retention rule is specific — you must keep the Form I-9 for either three years after the date of hire, or one year after the employment ends, whichever date is later.
For example, if an employee works for your company for ten years, you must keep their form for eleven years total — one year after termination. If an employee leaves after six months, you must keep their form for three years from their original hire date.
It is best practice to store these forms in a secure, separate folder rather than in the employee's general personnel file. This protects employee privacy and makes it much easier to pull the records if you ever face an inspection. You can store them as physical paper files or in a secure digital format.
Common I-9 mistakes small employers make
When you are managing dozens of tasks, it is easy for small details to slip through the cracks. Some of the most common errors include:
- Accepting expired documents
- Forgetting to sign or date the form
- Completing Section 2 past the three-day deadline
- Asking employees for specific documents instead of letting them choose from the list
Running periodic internal audits of your stored I-9 forms can help you catch missing signatures or incomplete fields early. If you find errors, there are specific federal guidelines on how to correct them without rewriting the entire form. Always consult your legal counsel if you discover systemic errors in your past documentation.
How Harbor HR helps you stay on top of onboarding deadlines
Keeping track of multiple start dates and paperwork deadlines can be challenging when you are managing HR with spreadsheets or paper folders. Harbor HR helps small businesses stay organized during the hiring process. The platform features digital onboarding checklists that clearly outline the steps you need to take for each new hire, helping you remember critical compliance timelines like the three-day I-9 window. While Harbor HR provides helpful compliance document templates to keep your files organized, it does not provide legal advice. For specific legal or immigration questions regarding your workforce, always consult your legal counsel.
If you are looking for a simpler way to manage your team's onboarding paperwork, tracking tools can help you stay organized.
FAQs
Can we complete Form I-9 remotely for virtual employees?
Yes, the Department of Homeland Security has introduced alternative procedures for remote document examination, but specific eligibility rules apply — such as being enrolled in E-Verify. Because these rules can change, you should consult your legal counsel to ensure your remote verification process meets current federal guidelines.
What should I do if an employee's document is about to expire?
Some documents require reverification before they expire, which involves completing Section 3 of the Form I-9 — or a new Section 3 on a supplement form. However, you should not reverify U.S. passports, permanent resident cards, or List B identity documents. Always check the official USCIS guidelines or consult your legal counsel when handling expiring work authorizations.
Do I need to mail the completed Form I-9 to the government?
No, you do not mail Form I-9 to any government agency. Instead, you must keep the completed forms on file at your business location — or stored securely online — and make them available for inspection if requested by federal authorities.