'US Citizens Only' and 'No OPT' in Job Postings: What's Legal and What It Means for Visa Holders

An employer can lawfully refuse to sponsor your visa, but a citizens-only or OPT-only ad is often illegal. Here is where the line sits and what to do next.

Is it legal to say "US citizens only" in job postings? Usually not. As of November 1, 2026, federal law (8 U.S.C. 1324b, enforced by the Justice Department's Immigrant and Employee Rights Section, or IER) bars employers with four or more employees from limiting a job to US citizens unless a law, regulation, executive order or government contract requires it. "We do not sponsor visas" is a different statement, and it is legal: DOJ has said employers may refuse sponsorship and say so in the ad. "OPT/H-1B only" ads are generally unlawful too, in the other direction, because they shut out US workers.

Status as of 2026-11-01 (in effect): the statute and IER's guidance are long-standing (best-practices page updated 2023-12-19; export-control fact sheet revised March 2024). What is new is enforcement: DOJ settlements over visa-preference ads on 2026-02-25 and 2026-04-07, and a $5 million DOJ and EEOC settlement with Instacart on 2026-10-20.

The twist for F-1, OPT, STEM OPT and H-1B readers: the rule against "citizens only" ads protects other people (citizens, green card holders, refugees, asylees). Yours are the protections against national origin discrimination, document abuse at Form I-9 and retaliation, and knowing that tells you what to do next.

Is it legal to say "US citizens only" in job postings?

Usually not. Under 8 U.S.C. 1324b, an employer with four or more employees may limit a job to US citizens only when a law, regulation, executive order or government contract requires it. Without that legal basis, a citizens-only ad is citizenship status discrimination against green card holders, refugees, asylees and US nationals, who are all protected.

The statutory exception covers discrimination "which is otherwise required in order to comply with law, regulation, or executive order, or required by Federal, State, or local government contract" (8 U.S.C. 1324b(a)(2)(C)), plus cases the Attorney General finds essential for doing business with a government agency. A company or client preference is not one of them.

IER's Best Practices for Recruiting and Hiring Workers (updated 2023-12-19) tells employers to avoid, "Unless legally required," phrases such as "Only U.S. Citizens," "Citizenship Required," "Only U.S. Citizens or Green Card Holders," "Must have a U.S. Passport" and "Must have a green card." The same list includes "H-1Bs Only" and "H-1Bs and OPT Preferred."

Who is protected from citizenship status discrimination?

IER's Types of Discrimination page says "U.S. citizens, U.S. nationals, asylees, refugees, and recent lawful permanent residents are protected from citizenship status discrimination." The statute leaves out permanent residents who do not apply to naturalize within six months of first becoming eligible, and some who applied but were not naturalized within two years. F-1 students (including OPT and STEM OPT), H-1B, H-4, L-1, TN and other nonimmigrants are not on the list.

When is a citizens-only requirement lawful?

When a real legal mandate sits behind it: a federal, state or local government contract that requires citizen staff for the role, a law or regulation that limits the position, or an executive order. Security-clearance work is a common example; our guide to government contractor jobs and the citizenship barrier maps where that wall sits. On our reading of the statute, the exception follows the requirement: a contract that restricts certain positions does not cover unrelated jobs at the same company.

The statute also lets an employer prefer a US citizen over a noncitizen "if the two individuals are equally qualified" (8 U.S.C. 1324b(a)(4)). That is a tie-breaker between two equal finalists, not permission to post "citizens only."

IER sometimes fixes these postings with a phone call: in a December 2018 telephone intervention over "a job posting that stated a preference for U.S. citizens," the employer decided to correct its postings.

Posting language decoded: what is legal and what is not

Common posting phrases under the INA anti-discrimination provision, as of November 2026. Sources: 8 U.S.C. 1324b; IER best practices (2023-12-19); DOJ letters (2013); IER export-control fact sheet (March 2024).

Can employers legally say they won't sponsor visas?

Yes. The office now called IER (then the Office of Special Counsel) wrote on 2013-09-06 that "If an employer chooses not to employ persons who require sponsorship for an employment visa, such as an H-1 visa, the employer may state in its job postings that it will not sponsor applicants for work visas" (DOJ letter, Sept. 6, 2013).

The reasoning is the protected-individual list above. A September 30, 2013 letter, about a company that sponsors H and L visas for other roles but not for one opening, concluded that an individual seeking an H-1B "is not in the protected class, and a company can choose not to employ a person because that individual requires visa sponsorship." Both are technical assistance letters, and OSC said in them that it could not give an advisory opinion on any particular case: they state the general rule, not the outcome of your facts.

The 2013-09-06 letter also names the question OSC said it prefers: "Will you now or in the future require sponsorship for employment visa status (e.g. H-1B visa status)?" Our guides to what "require sponsorship for employment" means and what happens after the Workday sponsorship question cover how to answer it on each status and what the system does with your answer.

Most refusals never appear in the ad at all. According to a single-vendor analysis by Match.dev of 2,718 engineering roles at 136 companies (postings read 2026-10-13), 88.1% of postings said nothing about sponsorship and only 1.1% explicitly refused it, while 90.7% of application forms asked about work authorization (Match.dev data). The screen usually happens in the form, not the posting.

Can an employer reject me because I'm on OPT?

Under federal law, generally yes, if the reason is that you will need sponsorship. F-1 students on OPT or STEM OPT are not "protected individuals" under 8 U.S.C. 1324b(a)(3), so INA citizenship status claims are not available to you. Three other protections still are.

1. National origin. The 2013-09-06 letter states: "All work-authorized persons, including non-immigrant visa holders, are protected from national origin discrimination and document abuse." IER handles national origin claims against employers with 4 to 14 employees; the EEOC covers employers with 15 or more under Title VII.
2. Document abuse at Form I-9. The EEOC's page on pre-employment inquiries and citizenship says federal law bars employers from "rejecting valid documents or insisting on additional documents" based on citizenship status or national origin, and you choose which acceptable documents to show (USCIS, completing Section 2 of Form I-9). A second 2013-09-30 letter, about H-1B workers, also warned that an employer that asks about a work permit's impending expiration, or "actually rejects a document based on a future expiration date, may violate the anti-discrimination provision, depending on the specific facts of the case."
3. Retaliation. The statute separately bars intimidation or retaliation against anyone asserting rights under it.

Federal law is not the whole picture: IER's export-control fact sheet says it "doesn't address other local, state, or federal laws that may prohibit discrimination based on citizenship, immigration status, or national origin." An employment attorney licensed in your state can tell you whether one applies.

Why employers write "No OPT"

Typically because they do not want to file an H-1B later, or do not want STEM OPT's employer duties: the employer must be "enrolled in E-Verify" and must sign the Form I-983 training plan, according to USCIS's STEM OPT page. On our reading of DOJ's letters, declining to sponsor is lawful; using "No OPT" as cover for screening out a nationality is not.

A worked example with three postings

Say you finished your master's in August 2026, your post-completion OPT card runs from 2026-10-01 to 2027-09-30, and you have no job yet. On 2026-11-03 you find three postings.

• Posting A: data analyst at a 40-person analytics firm, "US citizens only," no contract or clearance mentioned. Probably unlawful as written, but it wrongs green card holders, refugees and asylees, not you. If no government contract requires citizenship, the problem is the employer's; spend your time elsewhere.
• Posting B: software engineer at a large tech company, "We are unable to sponsor visas now or in the future." Lawful. The real question is whether about ten months of OPT, plus STEM OPT if you qualify and the employer will take on its E-Verify and I-983 duties, is worth it with no H-1B at the end. Meanwhile your unemployed days on OPT are counting toward the limit (90 days, or 150 with STEM OPT); ask your DSO how yours are counted.
• Posting C: staffing agency, "Java developer, OPT/H-1B candidates only, H-1B transfer available." The kind of ad DOJ settled over in 2026. Treat it as a filter on the recruiter: ask who the end client is and who would file the H-1B. Our guide to spotting exploitative or fake H-1B sponsors lists the other warning signs.

Why are "OPT/H-1B only" job ads a problem?

Because they exclude or deter US citizens and other protected workers, which is citizenship status discrimination, and DOJ is actively enforcing against them. A visa-only ad also tells you nothing about whether sponsorship will actually happen.

Three 2026 actions show the pattern, two over visa-preference ads and one over PERM recruitment that, the agencies alleged, burdened US applicants:

• 2026-02-25, Elegant Enterprise-Wide Solutions (Virginia). DOJ said its AI-generated postings limited consideration to H-1B, OPT or H-4 holders. The settlement requires staff and recruiter training, and DOJ said the author, human or AI, makes no difference (DOJ release).
• 2026-04-07, Compunnel Software Group (New Jersey). $313,420 in total: $58,000 in back pay to a US citizen excluded from a Python Developer role and $255,420 in civil penalties. DOJ called it the ninth settlement since its Protecting U.S. Workers Initiative was relaunched in 2025. Assistant Attorney General Harmeet Dhillon: "It's illegal to discourage U.S. workers from applying for American jobs" (DOJ release).
• 2026-10-20, Instacart (Maplebear Inc.). A $5,000,000 joint DOJ and EEOC settlement: $1,000,000 in civil penalties and a fund of up to $4,000,000 for applicants affected from December 2023 through February 2026. The agencies alleged Instacart required "that applications be physically mailed for positions advertised as part of PERM recruitment," while its normal process took electronic applications (EEOC release). It is a settlement, not a PERM suspension.

If your green card runs through PERM, the takeaway is that the agencies treat recruitment that makes it harder for US workers to apply as discrimination, so an open, easy-to-apply advertisement for your role is what the law expects. Our breakdown of the Cloudera and Instacart PERM settlements covers what they mean for pending cases.

What about ITAR, EAR and "US person" jobs?

Export rules do not, by themselves, make citizens-only hiring lawful. IER's fact sheet How to Avoid Immigration-Related Discrimination when Complying with U.S. Export Control Laws (rev. March 2024) says: "The ITAR and the EAR don't contain employment or hiring requirements."

What the rules do is restrict sharing controlled technology with people who are not "U.S. persons" (citizens, nationals, permanent residents, refugees and asylees). An employer may need State Department or Commerce Department authorization before giving a non-U.S. person access, and may run an export compliance check, which IER says should not be combined with Form I-9. On F-1, OPT or H-1B you are not a U.S. person. Our explainer on the "are you a U.S. person?" application question covers how to answer it and which roles it actually affects.

How to respond to a restrictive posting

1. Screenshot the posting with its URL and the date you saw it. IER's charge page says "Charges must be filed within 180 days of the alleged discrimination or retaliation."
2. Check the posting and the employer's careers page for a stated legal basis: a named government contract, a security-clearance level or an export-control note.
3. Answer the sponsorship and work-authorization questions in Workday, Greenhouse or any other applicant tracking system accurately, for both "now" and "in the future".
4. Ask the recruiter one neutral question in writing if the basis is unclear, such as whether the citizenship requirement comes from a government contract or clearance for this role.
5. Call the IER worker hotline at 1-800-255-7688 (it can tell you whether IER is the right office), or file through IER's online charge form, if you believe you faced national origin discrimination, document abuse or retaliation. Under the statute a charge comes from the person harmed or someone acting on their behalf, so for a citizens-only ad that wrongs other workers, you are passing on information rather than filing your own claim.
6. File with the EEOC instead for national origin discrimination by an employer with 15 or more employees, checking its own deadline promptly.
7. Consult an employment attorney about remedies and state or local law, your DSO about OPT reporting and unemployment days, and an immigration attorney about petitions or status strategy.

Common mistakes

• Treating "no sponsorship" as illegal discrimination. DOJ has said since at least 2013 that employers may refuse sponsorship and say so.
• Assuming every "U.S. person" job is legally citizens-only. Export rules contain no hiring requirements; only a real law, regulation, executive order or contract does.
• Seeing "OPT/H-1B only" as a safe bet. DOJ treats those ads as discrimination against US workers, and a visa-only ad promises nothing about sponsorship.
• Filing under the wrong label, or too late. On F-1 or H-1B, your INA claims are national origin, document abuse and retaliation, not citizenship status, and the IER window is 180 days.
• Misstating your status to get past a filter. It surfaces at Form I-9 or in the petition, and it can cost you the offer.

Frequently asked questions

Can employers legally say they won't sponsor visas?

Yes. In a 2013 technical assistance letter, the Justice Department office that enforces the INA anti-discrimination rule said an employer that chooses not to hire people who need visa sponsorship may say in its job postings that it will not sponsor work visas. F-1, OPT and H-1B holders are not protected from citizenship status discrimination under 8 U.S.C. 1324b, so a no-sponsorship policy is generally lawful as of November 2026.

Is 'US citizens only' legal in a job ad?

Only when a law, regulation, executive order or government contract requires it, as with some government-contract and security-clearance work. Otherwise IER lists "Only U.S. Citizens" and "Citizenship Required" among phrases to avoid, because they exclude green card holders, refugees and asylees, who are protected. IER also says export rules (ITAR and EAR) contain no hiring requirements.

Can an employer reject me because I'm on OPT?

Under federal law, generally yes if the reason is that you will need sponsorship, because F-1 students on OPT are not protected individuals for citizenship status claims. You are still protected from national origin discrimination, from retaliation and from document abuse at Form I-9, and IER has warned that rejecting a work-permit document over its future expiration date may be unlawful depending on the facts. State or local law may add protection.

Why are 'OPT/H-1B only' job ads a problem?

They exclude or deter US citizens, green card holders, refugees and asylees, which is citizenship status discrimination under the INA. IER lists "H-1Bs Only" and "H-1Bs and OPT Preferred" among phrases to avoid, and on 2026-04-07 DOJ announced a $313,420 settlement with Compunnel Software Group over ads that favored H-1B and other temporary visa holders. For you, such an ad is a warning sign about the recruiter, not a better opening.

Where do I report citizenship discrimination in hiring?

Contact the DOJ Immigrant and Employee Rights Section at 1-800-255-7688 or through its online charge form, within 180 days of the alleged discrimination. IER handles citizenship status discrimination by employers with four or more employees, document abuse and retaliation by employers of any size, and national origin claims against employers with 4 to 14 employees. National origin claims against employers with 15 or more employees go to the EEOC under Title VII. On F-1, OPT or H-1B, your own claim would usually be national origin, document abuse or retaliation, not citizenship status.

Sources

• 8 U.S.C. 1324b, unfair immigration-related employment practices (Cornell LII)
• DOJ Immigrant and Employee Rights Section and its Types of Discrimination page
• DOJ, Best Practices for Recruiting and Hiring Workers (updated 2023-12-19)
• DOJ IER, export-control employer fact sheet (rev. March 2024)
• DOJ technical assistance letters of 2013-09-06, 2013-09-30 (No. 173) and 2013-09-30 (No. 174)
• DOJ IER telephone interventions and Filing an IER charge
• DOJ releases on Elegant Enterprise-Wide Solutions (2026-02-25) and Compunnel Software Group (2026-04-07)
• EEOC and DOJ, Instacart settlement (2026-10-20) and EEOC, Pre-Employment Inquiries and Citizenship
• USCIS, STEM OPT extension page and USCIS, completing Section 2 of Form I-9
• Match.dev, sponsorship language in engineering postings (single vendor, read 2026-10-13)

How we checked this: we read the statute, IER's guidance pages, fact sheet and 2013 letters, the USCIS pages and the DOJ and EEOC settlement releases listed above on 2026-11-01, then re-checked each quote against its source before publication.

This is general information, not legal or tax advice; for your own situation, talk to an employment attorney, and to your DSO or an immigration attorney for anything that touches your F-1 or H-1B status.

A posting that says "no sponsorship" is a lawful no, and the fastest response is to put your energy into employers that do sponsor. If you want help building that list and running a focused search on OPT or STEM OPT, F1Jobs works with international candidates on exactly that.