What Is a Work Permit in the United States?

In the United States, a work permit usually means a document that proves certain people may work legally for a set period. It is a document available to people in certain immigration categories who are eligible to request employment authorization, and in many cases it lets the holder work for an employer of their choice.

What Is a Work Permit?

A U.S. work permit is commonly known as an Employment Authorization Document (EAD). It is issued by U.S. Citizenship and Immigration Services (USCIS) and is also called Form I-766.

An EAD is evidence that its holder is authorized to work in the United States for a specific period. USCIS describes it as one way a person can prove work authorization. See the agency's overview of the Employment Authorization Document.

Who Needs an EAD, and Who Does Not

Eligibility is not based on wanting to work or receiving a job offer. It depends on the person's specific immigration category and the rules attached to it.

USAGov explains that nonimmigrant visa holders generally need an EAD before being hired in the United States. But some people do not need one. A nonimmigrant who is already authorized to work for a specific employer may have work authorization through that status alone. Lawful permanent residents also do not need an EAD, because their Green Card itself serves as evidence of employment authorization.

Someone with a Green Card presents that card and needs no separate work permit. Someone on a visa tied to one employer, such as certain specialty-occupation categories, is generally authorized to work only for that sponsoring employer unless their status changes. Someone in a temporary category, or with a pending immigration application that allows for it, may need to apply for and receive an EAD before starting any job.

What Does an EAD Do?

An EAD helps an employer confirm that a worker is allowed to work in the United States during the document's validity period. For many holders, this means they can seek jobs with different employers rather than being tied to one sponsor.

Still, an EAD has limits. An EAD is evidence of work authorization for eligible people, a visa relates to a person's ability to enter or remain in the country under a particular category. One does not replace the other.

An EAD is also not permanent. It is generally valid for a limited time, and its end date matters, since the document itself does not grant lawful permanent residence or resolve a person's broader immigration situation. Finally, an EAD does not remove other job requirements. Workers and employers still need to meet ordinary licensing standards, tax obligations, and workplace rules, and employers must complete standard employment-eligibility verification for every new hire.

How to Apply for a Work Permit

The first step is determining whether you are eligible. Because eligibility depends on your immigration category, start with USCIS guidance that matches your specific situation rather than a general description found online. The agency's EAD information page is the best starting point for current filing details.

Before applying:

1. Identify your current immigration category. Your eligibility comes from that category, not from an employer's willingness to hire you.
2. Review the official USCIS instructions for your category. Requirements, evidence, and filing options can differ.
3. Keep copies of all notices and documents so you can track your case and respond to any USCIS request.
4. Plan around validity dates. If you already have an EAD, do not wait until the last minute to check whether continued authorization is available.
5. Get qualified legal help when your situation is unclear, especially if a status is changing or an application is pending.

Rules and processing procedures can change, so check current USCIS materials directly before filing or making a work-start decision.

What Employers Should Understand

For employers, work authorization is both a hiring issue and a compliance responsibility. The goal is a consistent process for every new hire, tracking expiration dates when continued authorization depends on a time-limited document.

This matters most for organizations hiring across borders or building internationally diverse teams. For global employers, understanding U.S. work permit requirements is a meaningful part of supporting a legally compliant and diverse workforce.

Key Takeaways

A U.S. work permit usually means an EAD, issued by USCIS, showing that an eligible noncitizen may work for a defined period. For workers, your current immigration category defines if you eligible for an EAD. For employers, applying one consistent verification process to every hire ensures the company stays compliant. In both cases, official USCIS and USAGov guidance remains the most reliable starting point.

Informational note: This article is provided for general informational purposes only and is not legal advice. It does not represent the advice or opinion of the website or organization on which it appears.