I-9 usually refers to Form I-9, the U.S. Employment Eligibility Verification form. It is a standard government form—not slang, an informal expression, or an acronym people use in ordinary conversation. Employers use it to verify the identity of each new employee and that the employee is authorized to work in the United States. Employees complete part of the form and present acceptable documents; the employer completes the verification and keeps the record. Knowing what the form does helps employees prepare and helps employers avoid confusing it with a job application, tax form, or visa.
What I-9 Means and Where the Name Comes From
Form I-9 is the official form name used by U.S. Citizenship and Immigration Services, commonly shortened to USCIS. “I-9” is an identifying label for the form, not a word with a separate dictionary meaning. The form’s full title is Employment Eligibility Verification. Its purpose comes from federal employment-verification requirements established by the Immigration Reform and Control Act, a federal law enacted in the nineteen eighties. The form records an employee’s attestation and the employer’s review of documents.
In conversation, people typically say “eye-nine.” For example: “Please bring acceptable documents for your I-9 on your first day.” In an email, a manager might write, “We still need to complete your Form I-9.” These are ordinary references to the government form. The term is most common in hiring, human resources, payroll, and workplace compliance; it is not usually used as a verb or as a general synonym for proof of identity.
Who Must Complete the Form
Employers generally must complete a Form I-9 for each person they hire to work in the United States, including citizens and noncitizens. The requirement applies to new employees, not independent contractors working for themselves. Special rules and exceptions can apply to certain categories of work, including some casual domestic work and work performed outside the United States. A business should check the applicable rules rather than assume that a worker’s citizenship or job title removes the requirement.
The process has two sides. The employee provides information and attests to their status. The employer examines acceptable documentation and records the verification. The form does not require an employee to be a U.S. citizen: people with different forms of work authorization may be eligible to work. Nor does completing the form grant immigration status or permission to work. It documents a verification process; it is not a visa, work permit, or hiring approval by itself.
Which Documents Can Be Used
The form’s document lists are designed to let employees choose what to present. A document from List A establishes both identity and work authorization. Alternatively, an employee can present one document from List B to establish identity and one from List C to establish work authorization. The employer must accept documents that reasonably appear genuine and relate to the person presenting them, subject to applicable rules. In general, documents must be unexpired, though a legally recognized extension can affect whether a document is acceptable.
- List A examples: a U.S. passport or passport card, or an employment authorization document issued by the federal government.
- List B examples: a state driver’s license or identification card with a photograph or identifying information.
- List C examples: an unrestricted Social Security account number card or a qualifying birth certificate issued by a government authority.
These are examples, not a complete list. The current Form I-9 instructions identify acceptable documents and any limitations. Employees choose which acceptable documents to show; an employer generally must not demand a particular document, such as a passport or green card, when the employee can meet the rules with another valid combination. Employers also must not discriminate by asking for extra documents because of a person’s citizenship, national origin, or perceived background. If a document is missing or does not meet the form’s requirements, the employee and employer should follow the official instructions rather than improvise.
How to Complete an I-9
The form is completed in stages. The employee should wait until accepting a job offer before completing Section 1, and must complete it no later than the first day of work for pay. The employer completes Section 2 after examining the employee’s documents. In the ordinary case, this must happen within three business days after the employee begins work for pay. If the job will last fewer than three business days, the employer must complete the verification by the first day.
- Employee completes Section 1. The employee enters the requested personal information, selects the applicable attestation, and signs and dates the section. A preparer or translator who assists must complete the relevant part of the form.
- Employee presents acceptable documents. The employee chooses either a qualifying List A document or a qualifying List B and List C combination. The employer should explain the options without steering the employee toward a particular document.
- Employer completes Section 2. The employer or authorized representative examines the documents, records the required document details, and completes the employer certification within the deadline.
- Employer stores the record. The employer keeps the completed form and makes it available for inspection by authorized government officials when required. The form is not normally mailed to USCIS as a routine part of hiring.
Both parties should check entries before signing. A typo in a name, an omitted date, or an incorrect document detail can create problems later. If a correction is needed, follow the form instructions and preserve a clear record of the change; do not obscure the original entry or complete a new form simply to conceal an error.
Remote Hiring, Copies, and Recordkeeping
Remote onboarding does not remove the employer’s verification duties. The employer must use a procedure permitted by current federal rules, which may include an authorized alternative procedure for eligible employers. That procedure has conditions, such as examining document copies and conducting a live video interaction; it is not simply permission to accept an emailed image without following the required steps. Employers should check current USCIS guidance before relying on a remote method because eligibility and procedure matter.
Employers may keep Form I-9 on paper, electronically, or in a combination of formats, provided the records meet applicable requirements for accuracy, security, accessibility, and inspection. An employer must retain a form until the later of three years after the employee’s hire date or one year after employment ends. That rule determines when the record may be destroyed; it does not mean the employer sends the form to the government at the end of that period. Copying documents is not a substitute for completing the form. Employers that make copies should apply a consistent policy and follow the rules for the verification method they use.
Reverification and Common Mistakes
Some employees have work authorization that is temporary and must be reverified when it expires, if they continue working and no extension or other rule changes the deadline. The employer records reverification in the appropriate part of the form. Employers generally must not reverify U.S. citizens or noncitizen nationals, and they must not reverify a lawful permanent resident solely because a permanent resident card expires. These distinctions matter: applying reverification rules too broadly can lead to improper document demands or discrimination.
Frequent errors include leaving required fields blank, using an outdated version of the form, recording a document incorrectly, missing a deadline, and asking an employee for more or different documents than the rules allow. Another common misunderstanding is that every worker must show a Social Security card. That is not true: a card is one possible document in a qualifying combination, and an employee may instead present an acceptable List A document. A Social Security number may be requested in some circumstances, but that does not make the physical card mandatory for every I-9.
If the employer discovers an error, it should correct the record in the manner described in official instructions and keep the correction traceable. If a document appears questionable, the employer should not make assumptions based on appearance, accent, or national origin. For uncertain cases, consult current USCIS instructions or an employment immigration professional. This article provides general information, not legal advice for a particular worker or employer.
How I-9 Differs from E-Verify and Other Hiring Forms
Form I-9 and E-Verify are related but not interchangeable. The I-9 is the employment eligibility verification form that employers generally complete for new hires. E-Verify is a separate online system that compares information from an employee’s Form I-9 with records held by federal agencies. Some employers must use E-Verify because of applicable rules or contracts; other employers may choose to use it where permitted. A completed I-9 does not automatically mean an E-Verify case has been created, and using E-Verify does not eliminate the need to complete and retain the form.
The I-9 is also different from tax paperwork such as Form W-4. A W-4 gives an employer information used for federal income tax withholding; an I-9 documents identity and work authorization. Neither form substitutes for the other. The I-9 is not an employment application, background check, or proof that a person has a particular immigration status beyond what the applicable documents and attestations establish.
Frequently Asked Questions
Is I-9 a word or an abbreviation?
It is the common short name for Form I-9, a government form. It is not ordinary slang and is not generally treated as an acronym. People usually pronounce it “eye-nine.”
Can an employer tell me which documents to bring?
An employer can provide the official document lists and explain the choices, but generally cannot require a particular acceptable document when you can satisfy the rules with another permitted option. You choose which qualifying documents to present.
Does every employee need to complete an I-9?
Employers generally complete one for each new employee hired to work in the United States, regardless of citizenship. Exceptions apply to certain work and worker categories, so employers should check the official rules for unusual situations.
Does completing an I-9 mean I am enrolled in E-Verify?
No. I-9 is a form and E-Verify is a separate system. An employer may use both when required or permitted, but completing the form alone does not create an E-Verify case.
What should I do if I made a mistake on the form?
Tell the employer promptly so the record can be corrected according to the official instructions. Do not hide, erase, or alter an entry on your own. For a question about a specific immigration or employment situation, seek qualified advice.