Reading the Category Code on a Work Permit
The short code printed on a work permit is a citation. It points to a paragraph in the regulation that lists who may be employed, and it tells the holder whether the authorization comes from a status, from an employer, or from a separate grant.
The rule in short
Every work permit carries a category code citing a subparagraph of the regulation that lists the classes authorized to accept employment. Codes in the (a) family denote authorization incident to a status; the (b) family denotes authorization tied to one employer; the (c) family denotes classes that must apply and hold authorization only while the underlying case lasts. The code, not the date, governs renewal and what survives.
A work permit is a small plastic card with a photograph, a name, two dates and a field labeled category containing something like a letter in parentheses followed by a number. That field is the only part of the card carrying legal meaning beyond the dates, and most holders have never been told what it points to.
Where the code comes from
The regulation on control of employment lists the classes of persons authorized to accept employment in the United States. It is organized into three lettered subsections, each containing a numbered list of classes, and the code on the card is a citation to one of those entries. A card showing a code in the (c) family with a particular number identifies precisely which paragraph of the regulation the holder's authorization rests on.
Reading the card as a citation rather than as a label changes what can be worked out from it. The paragraph states who is covered, and the surrounding regulation states the conditions. Everything that follows from the code, including whether the authorization survives the card, is derivable from that text rather than from anything printed on the plastic.
The three families of codes
The (a) family covers classes authorized to work incident to a status. A person granted asylum, a person admitted as a refugee, a person granted temporary protected status, and certain dependent spouses are all authorized because of what they are, not because of a document they applied for. The card is evidence, and it can be requested, but the authorization exists whether or not one is issued.
The (b) family covers classes authorized to work for a specific employer incident to status. Here the authorization is inseparable from a petition, and it ends when the petition ends. Workers in these classifications ordinarily do not hold a card at all, because the approval notice and the arrival record are the operative documents.
The (c) family covers classes that must apply for authorization and receive it as a discretionary grant. Applicants for adjustment of status, asylum applicants after the required waiting period, applicants for cancellation of removal, parolees, and certain dependent spouses fall here. The authorization exists only if it has been granted, and it lasts only as long as the grant and the underlying case both continue.
A card issued on a pending application does not become invalid the moment the application is denied, but the authorization behind it does, and continuing to work on a facially valid card after the basis is gone creates exposure for the worker and the employer alike. The reverse happens too, with authorization from a status surviving the expiration of the card that evidenced it.
What the code tells the holder
| The (a) family | The (b) family | The (c) family | |
|---|---|---|---|
| Source of the authorization | The status itself | The status, limited to one employer | A separate discretionary grant |
| Separate application required | No, though a card can be requested | No | Yes |
| Employer-specific | No | Yes | No |
| Ends when | The status ends | The petition or employment ends | The grant or the underlying case ends |
| Renewal on timely filing extends the card | For listed categories | Not applicable | For listed categories |
The bottom row is where the code has the most practical bite. Whether a timely renewal continues authorization past the printed expiration date depends on the category and on nothing else, and the categories eligible for that treatment are enumerated. The mechanics are set out separately in the account of what a timely renewal filing does to an expiring document.
Codes tied to a pending case
Several of the most widely held codes exist only because something else is pending. Authorization granted to an adjustment applicant lasts while the adjustment application does, and it ends with a denial regardless of what the card says. Authorization granted to an asylum applicant behaves the same way, as does authorization granted to an applicant for relief before an immigration judge.
Holders in these categories are therefore in a position no employer can see from the document: they are lawfully working, they may hold no immigration status at all, and their authorization is contingent on a case they may not control. That combination is exactly the middle band described in the treatment of status and unlawful presence as separate measures, where a person is authorized to be present and to work while holding nothing that would be called a status.
What the code means to an employer
For verification purposes, the document is simply a document that establishes both identity and authorization, and the employer records its details without assessing the legal theory behind them. The statutory scheme deliberately keeps employers out of that assessment, and the companion provision makes it unlawful to demand a specific document or to treat workers differently by citizenship status or national origin.
The practical rule follows: an employer that asks why a code says what it says has strayed. An employer that reverifies at the right time and accepts what the rules say is acceptable has done its job. Employers uncertain where that boundary sits, particularly across a workforce holding several different codes, are the ones who benefit from having a work visa attorney review the process rather than the individual file.
When the card is not the authorization
Certain dependent spouses are authorized to work by virtue of their admission, and the arrival record annotated with the class of admission serves as acceptable evidence without any card at all. That development removed a large population from the application queue and simultaneously created confusion, because holders and employers alike had learned to expect a card.
The lesson generalizes. The card evidences an authorization; it is not the authorization itself except in the categories where a grant is what creates the right. Anyone reasoning from the plastic rather than from the code will eventually reach a wrong answer, whether about a spouse who needs no card, a worker whose petition has been withdrawn by the employer that filed it, or a person whose status is being queried through the system a benefit agency uses to verify immigration status for an entirely unrelated purpose.
Points to carry away
- The category code is a citation to the regulation listing classes authorized to work.
- Codes in the (a) family reflect authorization that comes with a status rather than with the card.
- Codes in the (b) family are employer-specific and tied to the petition that supports them.
- Codes in the (c) family depend on a separate application and end when the underlying case ends.
- The code, not the expiration date, determines whether a timely renewal extends the document.
- An employer verifying eligibility may not demand a particular document or a particular code.
Questions readers ask
Why do some people hold a status that permits work but carry no card at all?
Because in several classifications the authorization comes from the status itself, and the card is only evidence of something that already exists. Certain dependent spouses fall in this group, and the arrival record annotated with the class of admission serves as the proof an employer needs. Those holders can obtain a card if they want one, but the card adds convenience rather than authority. The distinction matters when a card expires, because the authorization does not necessarily expire with it.
Can the category on a renewal differ from the category on the expiring card?
It can, and the consequence is significant. A renewal filed under a different category is a new request rather than a continuation, which means the rules that extend a document automatically on timely filing generally do not apply. People change categories legitimately, for instance where a pending application is approved and the basis of authorization shifts, but the change should be a deliberate decision. Filing under a different code by accident is a common way to create an unintended gap in authorization.
Does the code tell an employer anything it needs to know?
Very little. For verification purposes the document establishes both identity and authorization, and the employer records what the document says without evaluating the immigration theory behind it. The law prohibits requiring a specific document or treating people differently on the basis of citizenship status or national origin, so an employer that starts asking questions about the code has moved from verification into territory the anti-discrimination provisions cover. The code is for the holder and the agency.
Sources
- Cornell Legal Information Institute — 8 CFR 274a.12, Classes of Aliens Authorized to Accept EmploymentThe regulation whose subparagraphs the category codes cite.
- Cornell Legal Information Institute — 8 CFR 274a.13, Application for Employment AuthorizationGoverns applications, issuance and the automatic extension of a document on renewal.
- Cornell Legal Information Institute — 8 U.S.C. 1324a, Unlawful Employment of AliensEstablishes the verification obligation employers owe for every new hire.
- Cornell Legal Information Institute — 8 U.S.C. 1324b, Unfair Immigration-Related Employment PracticesProhibits demanding particular documents or discriminating by citizenship status.
- eCFR — 8 CFR Part 274a, Control of Employment of AliensThe complete employment authorization and verification framework.
- USCIS — Form I-765, Application for Employment AuthorizationThe application on which the category is selected, with the eligibility categories listed.
- USCIS — I-9 CentralThe agency's guidance on which documents establish identity and authorization.
Justice Partners Journal is a publication, not a law firm. This article states general rules and cites its sources; it is not advice about any particular case, and the law differs by state and changes over time.
