How to Complete Form I-9: A Guide to Employment Eligibility Verification

Starting a new job or bringing on a new team member in 2026? Then you are about to encounter Form I-9, Employment Eligibility Verification. This form looks simple, but it is an important part of US employment law, crucial for both employees proving their right to work and employers ensuring compliance.

Unlike tax forms that deal with money, Form I-9 deals with something even more basic: legal work authorization. It's a critical document that helps prevent the employment of individuals who are not authorized to work in the United States. Staying updated on best practices and understanding the nuances of I-9 is essential for avoiding costly penalties.

Learn about Form I-9, what are the common mistakes you should avoid, and get a clear, step-by-step walkthrough of each section.

Why is Form I-9 so Important?

Form I-9 is a legally mandated document established by the Immigration Reform and Control Act (IRCA) of 1986. Every employer in the United States must ensure that their employees (both citizens and non-citizens) are authorized to work in the country.

For Employees: Proving You Can Work

If you just got hired, filling out Form I-9 is how you prove who you are and that you are allowed to work in the US. It's not optional. If this form isn't done right, your boss isn't legally allowed to pay you or keep you on the team.

For Employers: Avoiding Big Fines

For business owners, the risks are real. The government takes these forms seriously, and filling them wrong can get expensive fast.

• Simple Paperwork Mistakes: You can be fined hundreds or even thousands of dollars just for simple typos or missing dates, even if your employee is actually 100% legal to work.
• Hiring Unauthorized Workers: If you knowingly hire someone who isn't allowed to work in the US, the penalties are much worse. You could face massive fines, be banned from government contracts, or even face jail time.

The Advantage of Digital I-9 Completion

While you are allowed to use paper forms, using a digital tool is significantly more efficient, especially if your team is working remotely.

Better Accuracy and Guidance

Digital forms help prevent mistakes before they happen. Instead of realizing you missed a signature or a date after the fact, the system alerts you immediately. Since I-9 rules are strict, having these built-in safeguards helps you avoid unnecessary fines.

Smoother Remote Onboarding

For employees working from home, digital tools help you avoid the headache of printing and mailing paperwork. The employee can complete their section online and send it instantly to the employer. It speeds up the entire process and eliminates the need for "snail mail."

Stress-Free Record Keeping

You are legally required to keep I-9 forms on file for years. Digital storage keeps your records organized, searchable, and safe from physical damage. If you are ever audited, you can find the exact file you need in seconds rather than digging through a filing cabinet.

Common I-9 Mistakes

Even with the best intentions, errors on Form I-9 are common. Being aware of these typical mistakes can save both employees and employers considerable trouble.

For Employers

Missing the Deadline: Employers must ensure Section 1 is completed by the employee on or before their first day of employment. Section 2 must be completed within three business days of the employee's first day of employment.

Incorrect Use of Authorized Representatives: For remote hires, employers can designate an "authorized representative" (like a notary, spouse, friend) to complete Section 2 on their behalf. However, the employer remains liable for any errors made by this representative. Clear instructions are vital.

Accepting Improper Documents: Employers sometimes accept documents that are expired, fraudulent, or not on the official List of Acceptable Documents (Lists A, B, and C). It's crucial to only accept unexpired documents from the official list and to visually inspect them.

Discrimination in the Verification Process: Employers can't ask for more documents than required, specify which documents an employee must present, or refuse to accept a valid document based on perceived foreign appearance or accent. This is a serious anti-discrimination violation.

For Employees

Incomplete or Incorrect Section 1: Employees often overlook fields, provide inconsistent names, or misinterpret the "Attestation" section. This can lead to delays or require the employer to request corrections, which can complicate the process.

Step-by-Step Instructions: Completing Form I-9

Form I-9 is divided into three distinct sections, with specific responsibilities for the employee and the employer.

Section 1: Employee Information and Attestation

1. Employee Information:

• Last Name, First Name, Middle Initial: Enter your full legal name as it appears on official documents.
• Other Names Used (if any): Include any maiden names or other legal names you have used.
• Address, Apartment Number, City, State, Zip Code
• Date of Birth: Your birth date in MM/DD/YYYY format.
• U.S. Social Security Number
• Employee's Email Address / Telephone Number (Optional): You may provide these for employer contact, but they are not mandatory for I-9 purposes.

2. Attestation of Citizenship or Immigration Status:

You must check one of the following four boxes to attest to your legal right to work in the U.S.:

• A citizen of the United States.
• A noncitizen national of the United States.
• A lawful permanent resident: If you check this, you must enter your Alien Registration Number (A-Number) or USCIS Number.
• An alien authorized to work: If you check this, you must enter your Alien Registration Number/USCIS Number OR Form I-94 Admission Number OR Foreign Passport Number and Country of Issuance. You must also enter the expiration date of your employment authorization, if applicable.

3. Employee's Signature and Date

4. Preparer and/or Translator Certification (if applicable): If someone other than the employee prepares or translates Section 1, that person must complete and sign this separate certification.

Section 2: Employer Review and Verification

This section must be completed by the employer or an authorized representative within three business days of the employee's first day of employment. The employer must physically (or via live video interaction for remote hires, if permitted by current DHS policy) examine the original documents presented by the employee.

1. Employee Information from Section 1: Re-enter the employee's last name, first name, and middle initial from Section 1.
2. Document Certification:
   • List A Documents: If the employee presents one document from List A (e.g., U.S. Passport, Permanent Resident Card), enter its document title, issuing authority, document number, and expiration date. List A documents establish both identity and work authorization.
   • List B and C Documents: If the employee presents one document from List B (establishes identity, e.g., driver's license) AND one document from List C (establishes work authorization, e.g., Social Security card), enter the details for both documents.
3. Certification:
   • Date of Hire: Enter the employee's first day of employment (MM/DD/YYYY).
   • Employer or Authorized Representative Information: Enter your name, title, signature, and today's date.
   • Employer's Business Name and Address: Provide your company's full legal name and address.

Section 3: Reverification and Rehires

This section is used only in specific situations:

• Reverification of Employment Authorization: If an employee's work authorization expires, the employer must reverify their eligibility before the expiration date.
• Rehire: If an employer rehires an employee within three years of the original I-9 completion date, they can either complete a new I-9 or complete Section 3 of the original form.