Work authorization is legal permission to perform work in a particular country under that country’s rules. In the United States, a person may be authorized because of citizenship or lawful permanent residence. Some immigration statuses also allow employment, while other people must receive separate government approval before working. Authorization can be limited by its validity period or by conditions attached to the person’s status. It is different from a document used to prove identity, and an Employment Authorization Document (EAD) is not the only possible evidence of permission to work. Workers and employers must follow the verification process that applies to the job. Understanding the difference between permission and proof helps workers identify the rules that apply to them and helps employers complete required hiring records without requesting unnecessary documents.
Table of Contents
- How Does Work Authorization Apply in the United States?
- How Is Work Authorization Verified for a New Hire?
- What Restrictions or Expiration Dates Should Workers Check?
- What Is the Difference Between Authorization and Proof?
- How Does Authorization Affect Contingent Workforce Programs?
How Does Work Authorization Apply in the United States?
U.S. work authorization is determined by federal immigration law. U.S. citizens are authorized to work, and lawful permanent residents generally have broad permission to work. Some noncitizens may work because their immigration status itself grants that permission. USCIS describes this as authorization incident to status. Other people must apply for separate employment authorization before they can work. The rules depend on the person’s immigration category and can include conditions about the type of work or the employer.
An EAD, also called a work permit, is a card that can serve as evidence of authorization for eligible people. It does not create one universal category of permission. The person’s underlying status and the terms of the authorization still matter. Some people may be authorized to work without an EAD. The USCIS Form I-765 instructions explain that authorization may be granted through a person’s status or through a separate application.
Authorization can be temporary or have no stated expiration date. When it is limited, the worker may need to follow conditions tied to a sponsoring employer or a specific type of work. A work permit or work visa may be relevant to a worker’s situation, but the names and effects of immigration documents vary by category. A document should be read alongside the person’s status and applicable government guidance. The same document name does not necessarily mean that every holder has identical work rights.
How Is Work Authorization Verified for a New Hire?
U.S. employers generally use Form I-9 to document the identity and employment authorization of each person they hire for employment in the United States. This requirement applies to citizens as well as noncitizens. The employee completes Section 1, and the employer or its authorized representative completes the employer review section using acceptable documentation. The form records information for the employment verification process. It is not an application for immigration status or a request for the government to grant permission to work.
For Form I-9, an employee generally chooses either one acceptable document that establishes both identity and work authorization or a combination of documents that establish each separately. The USCIS Lists of Acceptable Documents show the options. An employer must not tell an employee to present a particular document when the employee can choose among acceptable documents. The Department of Justice’s guidance on employment verification explains that demanding extra or specific documents because of citizenship or immigration status may be unlawful. Employers should apply the same document review process consistently.
Form I-9 verification is an employer recordkeeping process. Completing the form does not grant work authorization or change a person’s status. Employment verification is the broader process of checking eligibility and recording required information. Some employers also participate in E-Verify, which compares information from Form I-9 with government records. E-Verify does not replace Form I-9. Employers must understand which procedures apply to them and follow current instructions for completing and retaining the records.
What Restrictions or Expiration Dates Should Workers Check?
Authorization may have an expiration date or limits on the work a person can perform. For example, a worker’s immigration category may permit employment only for a particular employer. A student’s permission may depend on meeting category-specific rules. Other authorization may allow work for a broader range of employers. The relevant restrictions depend on the person’s status and on the documents or government records that establish authorization. A card’s expiration date is important, but it may not describe every condition that applies.
Workers should check the authorization’s terms and dates before starting a role or changing jobs. Employers should follow Form I-9 rules for any required reverification. An expiring document does not by itself answer whether authorization continues. Extensions and other exceptions depend on eligibility and the rules in effect. A pending renewal application should not be assumed to extend work permission. USCIS rules on EAD extensions have changed, so workers and employers should confirm current guidance with USCIS rather than rely on an old card or a general rule.
A change in a worker’s role or employer can have different consequences depending on the authorization category. A worker whose permission is tied to one employer may need a new approval before beginning work elsewhere. A worker with broader authorization may not face that same restriction. If the document or status language is unclear, an immigration attorney or the responsible government agency can help explain what it allows. Workers should resolve uncertainty before performing work that may fall outside their authorization.
What Is the Difference Between Authorization and Proof?
Work authorization is the legal permission to work. Proof is the document or record used to establish identity and eligibility in a particular process. An EAD is one form of proof and is also commonly called a work permit. A person may instead be authorized through an immigration status and use other acceptable records for Form I-9. Conversely, possessing an identity document alone does not necessarily establish permission to work. The distinction matters because a person’s legal eligibility and the documents presented during employment verification are related but separate questions.
A visa and work authorization are also related but distinct concepts. A visa generally concerns permission to seek entry to the United States or travel under a particular classification. Whether the person may work depends on the applicable immigration status and its conditions. Some categories allow work only for a designated employer, while others require separate employment authorization. A visa label should not be treated as a standalone answer to whether a particular job is permitted. The worker’s status and any applicable approval should be considered together.
These distinctions matter when someone changes status, renews an EAD, or begins a new job. A residence card or another immigration record may provide evidence relevant to employment, but the acceptable Form I-9 documents are set by federal rules. Employers should use the standard process for every hire rather than assume a person needs a specific document based on appearance, name, or perceived nationality. Employees generally choose which acceptable documentation to present, and employers should not demand more than the process requires.
How Does Authorization Affect Contingent Workforce Programs?
For organizations using contingent workers, an important operational question is which entity is responsible for completing and retaining Form I-9. The answer depends on the actual employment arrangement and applicable law. A staffing supplier or another employer may handle the employment relationship for an assigned worker, while the client organization manages the assignment. The parties should establish clear procedures so the verification task is not missed or duplicated. The worker’s presence at a client location does not by itself determine which organization has the employer’s verification duties.
Program processes can also identify who monitors required reverification and how sensitive documents are collected and stored. A document management system may support orderly records and access controls, but it does not determine whether a person is legally authorized to work. Immigration decisions remain governed by the relevant status and government requirements. Clear responsibility for the records can also help teams respond consistently when a document expires or a later verification step is required.
TCWGlobal’s contingent workforce management work may intersect with these operational responsibilities when a program coordinates worker onboarding and employment-related administration. Organizations should define the responsible employer and the verification workflow for each arrangement. A worker’s assignment at a client site does not by itself determine which entity must complete the required employment records. A documented process can clarify who collects required information and who retains it. It should also preserve the worker’s ability to choose among acceptable Form I-9 documents rather than directing them to provide a particular document.
