Hiring a new employee in the United States comes with the usual onboarding checklist: offer letter, payroll setup, tax forms, direct deposit, maybe a cheerful welcome email with too many exclamation points. But tucked inside that process is one document employers cannot afford to treat casually: Form I-9, Employment Eligibility Verification.

Form I-9 is the federal document used to verify that a person hired for employment in the United States is both who they say they are and authorized to work. Every U.S. employer must complete it for every new hire, whether the employee is a U.S. citizen, permanent resident, temporary worker, or another work-authorized individual. In plain English, Form I-9 is the government’s way of saying, “Before this person starts working here, please confirm they are allowed to work here.”

Simple? Mostly. Harmless? Not exactly. Form I-9 may look short, but it carries serious compliance responsibilities. A missed signature, a late completion date, an outdated version, or asking for the wrong document can create problems during an audit. Think of the I-9 as the tiny onboarding form with the personality of a final exam.

What Is Form I-9?

Form I-9 is officially called Employment Eligibility Verification. It is issued by U.S. Citizenship and Immigration Services and is required under federal immigration law. The form documents that a new employee has presented acceptable proof of identity and employment authorization.

The key word is “documents.” Form I-9 is not based on a handshake, a résumé, a confident smile, or an employee saying, “Trust me, I’m good.” The employee must choose documents from the government’s Lists of Acceptable Documents, and the employer must review those documents to determine whether they reasonably appear to be genuine and relate to the employee.

Employers do not send Form I-9 to USCIS as part of normal onboarding. Instead, they keep it on file and make it available if requested by authorized government officials, such as the Department of Homeland Security, the Department of Labor, or the Department of Justice.

Who Needs to Complete Form I-9?

Form I-9 must be completed for each employee hired to work in the United States. This includes full-time employees, part-time employees, seasonal workers, and temporary employees if they are directly hired by the employer.

Independent contractors generally do not complete Form I-9 for the company using their services, because they are not employees of that company. However, employers should be careful not to use “contractor” labels as magic dust. If a worker is legally an employee, the I-9 requirement applies.

Form I-9 is also required for U.S. citizens. This surprises some new hires. The form is not only for immigrants or noncitizens; it applies to everyone hired after the effective date of the law. Employers must apply the process consistently, or they risk discrimination problems. In other words, you cannot say, “You look American enough, skip the form.” That is not compliance; that is a lawsuit wearing a fake mustache.

When Must Form I-9 Be Completed?

Timing matters. The employee must complete Section 1 no later than the first day of employment for pay. The employer must complete Section 2 within three business days after the employee’s first day of employment.

For example, if an employee starts work on Monday, the employer generally has until Thursday to complete Section 2. If the person is hired for fewer than three business days, the employer must complete the entire I-9 process no later than the first day of employment.

The safest approach is to make Form I-9 part of a structured onboarding process. Do not wait until payroll is already running, the employee has been working for a month, and someone in HR suddenly says, “Did anyone ever do the I-9?” That sound you hear is compliance quietly leaving the building.

The Main Parts of Form I-9

Section 1: Employee Information and Attestation

Section 1 is completed by the employee. The employee provides personal information such as name, address, date of birth, and, when applicable, immigration or work authorization information. The employee also attests, under penalty of perjury, to their employment authorization status.

If the employee needs help completing Section 1 because of language, disability, or another reason, a preparer or translator may assist. In that case, the appropriate preparer or translator supplement must be completed. This is important because the employer needs a clean record of who helped prepare the employee’s attestation.

Section 2: Employer Review and Verification

Section 2 is completed by the employer or an authorized representative. The employer reviews the employee’s original acceptable documents, records the document information, enters the employee’s first day of employment, and signs the certification.

The employer is not expected to be a forensic document expert with a magnifying glass and dramatic background music. However, the employer must physically examine documents, or use a DHS-authorized alternative procedure if eligible, and determine whether the documents reasonably appear genuine and relate to the person presenting them.

Supplement A: Preparer or Translator Certification

Supplement A is used when one or more preparers or translators help the employee complete Section 1. It keeps the process transparent and documents the assistance provided.

Supplement B: Reverification and Rehire

Supplement B is used for certain reverification and rehire situations. For example, an employer may need to reverify an employee whose temporary work authorization expires. Supplement B may also be used when an employee is rehired within three years of the date the original Form I-9 was completed.

What Documents Are Acceptable for Form I-9?

The Form I-9 document rules are built around three categories: List A, List B, and List C.

List A documents establish both identity and employment authorization. Common examples include a U.S. passport, Permanent Resident Card, or Employment Authorization Document that contains a photograph.

List B documents establish identity only. Examples may include a driver’s license, state ID card, school ID with photograph, or certain other identity documents.

List C documents establish employment authorization only. Examples may include an unrestricted Social Security card, a birth certificate issued by a proper authority, or certain citizenship documents.

An employee may present either one document from List A, or one document from List B plus one document from List C. The employee chooses which acceptable documents to present. The employer cannot demand a specific document, such as saying, “Bring your green card,” or “We only accept passports.” That is called document abuse, and it can trigger discrimination claims.

Can Employers Copy I-9 Documents?

Employers may choose to make copies of the documents employees present, depending on the rules that apply to the employer and the employer’s internal policy. However, copying documents does not replace completing Form I-9 correctly. A photocopy of a passport will not fix a missing employer signature, a blank document title field, or a late Section 2.

If an employer copies documents, it should do so consistently for all employees, not selectively. Keeping copies for some workers but not others can create the appearance of unfair or discriminatory treatment. Consistency is the boring superhero of I-9 compliance.

What Is the Current Form I-9 Version?

As of 2026, employers should pay close attention to the edition date and expiration date on Form I-9. The revised edition dated 01/20/25 has an expiration date of 05/31/2027. Some prior 08/01/23 editions remain valid until their respective expiration dates, but employers using electronic I-9 systems must ensure their systems are updated with the proper version by the applicable deadline.

The edition date appears at the bottom of the form, while the expiration date appears near the top. These dates are easy to overlook, but using an outdated form can create compliance risk. The practical advice is simple: download the form directly from USCIS or verify that your HR software provider is using the current acceptable version.

Is Form I-9 the Same as E-Verify?

No. Form I-9 and E-Verify are not the same thing. Form I-9 is mandatory for nearly all U.S. employers when hiring employees. E-Verify is an electronic system that compares information from Form I-9 against government records to help confirm employment eligibility.

Some employers are required to use E-Verify because of federal contracts, state laws, or other rules. Others use it voluntarily. But E-Verify does not replace Form I-9. Even employers enrolled in E-Verify must still complete and retain Form I-9.

Remote Document Examination: Can Form I-9 Be Completed Remotely?

Remote hiring has changed the way employers onboard workers, and Form I-9 has changed with it. Certain qualified employers enrolled in E-Verify and in good standing may use a DHS-authorized alternative procedure to examine documents remotely.

Under the alternative procedure, eligible employers may review copies of documents, conduct a live video interaction with the employee, check the box on Form I-9 indicating that the alternative procedure was used, and retain required document copies. However, this option is not available to every employer. If an employer is not qualified to use the alternative procedure, standard document examination rules apply.

Remote I-9 completion is convenient, but it is not a casual video chat where someone waves a license at a webcam from across the room. Employers need a documented process, trained staff, and consistent use of the procedure.

How Long Must Employers Keep Form I-9?

Employers must retain Form I-9 for each current employee. After employment ends, the employer must keep the form for either three years after the date of hire or one year after the date employment ends, whichever is later.

Here is a simple example. If Maria is hired on January 1, 2024, and leaves on July 1, 2024, the employer must compare two dates: January 1, 2027, which is three years after hire, and July 1, 2025, which is one year after termination. The later date is January 1, 2027, so the employer keeps the I-9 until then.

If James is hired on January 1, 2020, and leaves on May 1, 2026, the employer compares January 1, 2023, with May 1, 2027. The later date is May 1, 2027, so the employer keeps the I-9 until that date.

Common Form I-9 Mistakes

Many I-9 problems are not dramatic. They are small, ordinary, and painfully preventable. Common mistakes include completing the form late, forgetting signatures, using the wrong form version, accepting expired documents, failing to enter the employee’s first day of employment, and requesting specific documents from employees.

Another common mistake is over-documentation. Employers sometimes think asking for more documents is safer. It is not. If the employee presents an acceptable List A document, the employer should not also demand a Social Security card and driver’s license “just to be safe.” In I-9 world, “extra” can become “illegal.”

Employers also get into trouble when reverification is handled incorrectly. U.S. citizens and lawful permanent residents generally should not be reverified just because a passport, driver’s license, or green card later expires. Reverification usually applies to expiring temporary work authorization, not every document with an expiration date.

What Happens During an I-9 Audit?

An I-9 inspection often begins with a Notice of Inspection. Employers usually have three business days to produce requested I-9 records and related documents. Government officials may review the forms for missing information, late completion, improper documents, and other violations.

Penalties can vary depending on the type of violation, employer history, business size, good faith, seriousness of the errors, and whether unauthorized workers are involved. Paperwork violations can result in fines per form, and knowingly hiring or continuing to employ unauthorized workers can lead to significantly higher penalties.

The lesson is not to panic. The lesson is to prepare before anyone knocks. A thoughtful internal audit, written procedures, and regular HR training can prevent small mistakes from turning into expensive surprises.

Best Practices for Employers

Employers can reduce I-9 risk by building a repeatable process. Use the current form, train everyone involved in onboarding, complete Section 1 and Section 2 on time, allow employees to choose their acceptable documents, and store I-9 records separately from general personnel files.

It is also wise to conduct periodic self-audits. Internal audits should be consistent and non-discriminatory. Do not audit only employees who “look foreign,” speak with an accent, or have temporary work authorization. That kind of targeting is exactly what anti-discrimination rules are designed to prevent.

When correcting errors, employers should never backdate forms. Corrections should be transparent: draw a line through incorrect information, enter the correct information, initial and date the correction, and keep a clear audit trail. Honesty looks much better in an audit than creative time travel.

What Employees Should Know About Form I-9

Employees should understand that Form I-9 is a normal part of getting hired in the United States. It does not mean the employer suspects anything. It simply means the employer is following federal law.

Employees also have rights. They may choose which acceptable documents to present. An employer cannot require more documents than necessary, reject documents that reasonably appear genuine and relate to the employee, or treat workers differently because of citizenship, immigration status, or national origin.

If an employee’s name, immigration status, or work authorization situation is complex, the employer should handle the matter carefully and consistently. Guesswork is not a strategy. When needed, employers should consult qualified legal counsel or official government guidance.

Real-World Experiences With Form I-9

In day-to-day hiring, Form I-9 is often where good onboarding systems prove their worth. A company with a clear process can complete I-9 verification smoothly, while a company that treats the form like an afterthought may end up chasing signatures, missing deadlines, and storing documents in five different places. That is how HR folders become archaeological sites.

One common experience happens with fast-growing small businesses. A company hires its first few employees casually, maybe with the founder handling paperwork after lunch between sales calls. At first, everything feels manageable. Then the company grows from five employees to fifty, and suddenly the “we’ll do it later” approach becomes a compliance hazard. The I-9 forms are incomplete, some employees used old documents, and nobody remembers whether document copies were retained consistently. Growth is wonderful, but it has a habit of exposing messy systems.

Another practical experience involves remote workers. Suppose a company hires a software developer in another state. The manager may assume the I-9 can be finished by email alone. That assumption can cause trouble. Unless the employer qualifies for and properly uses the DHS-authorized remote examination alternative procedure, document examination must follow the standard rules. Many employers solve this by using an authorized representative near the employee, such as a trained agent, notary where appropriate, or designated company representative. The important point is that the employer remains responsible for the accuracy of the form, even when someone else helps complete it.

Employers also learn quickly that employees do not always bring the documents HR expects. A new hire may bring a passport, while another brings a driver’s license and unrestricted Social Security card. Both can be perfectly fine if they fit the acceptable document rules. The employer’s job is not to prefer one combination over another. The employer’s job is to review what the employee chooses to present from the approved lists.

There are also moments when kindness and compliance must work together. A new employee may be nervous because they recently changed their name, renewed work authorization, or replaced a lost document. A trained HR person can explain the process calmly without making the employee feel singled out. That matters. I-9 compliance is not only about avoiding fines; it is also about creating a fair hiring experience.

The best I-9 experiences usually share the same ingredients: current forms, clear instructions, trained staff, consistent document review, secure storage, and regular audits. The worst experiences usually involve improvisation, selective treatment, outdated forms, or the classic sentence, “We’ve always done it this way.” In compliance, that sentence is less of a comfort blanket and more of a smoke alarm.

For employers, the practical takeaway is to respect Form I-9 early. Build it into onboarding before the employee’s first day. Use checklists. Confirm the current form version. Document remote procedures properly. Separate I-9 records from personnel files. Schedule internal reviews. And when a mistake appears, correct it honestly rather than pretending it never happened.

For employees, the takeaway is simpler: Form I-9 is normal, required, and not a judgment about you. Bring acceptable documents, complete Section 1 accurately, and ask questions if something is unclear. A good employer will guide the process without demanding unnecessary documents or making assumptions about your background.

Conclusion

Form I-9 may not be the most glamorous part of hiring, but it is one of the most important. It verifies identity and work authorization, protects employers from compliance risk, and supports fair employment practices when handled correctly. The form is short, but the responsibilities around it are detailed: complete it on time, use the right version, let employees choose acceptable documents, avoid discrimination, retain records properly, and prepare for possible audits.

For employers, the goal is not to become afraid of Form I-9. The goal is to become organized. A reliable I-9 process turns a potentially stressful compliance requirement into a routine part of onboarding. And routine is good. In HR compliance, boring usually means things are working.

Note: This article is for general informational purposes only and is not legal advice. Employers should verify current Form I-9 requirements with official government guidance or qualified counsel before making compliance decisions.