Quick answer: Yes, F-1 graduates can work for Korean companies in the U.S. on OPT, and STEM graduates can extend that time with STEM OPT. Before you accept, confirm three things: the job is related to your degree, the employer is enrolled in E-Verify and will sign Form I-983 if you plan to use STEM OPT, and the company has a plan for H-1B or another long-term visa.
OPT is the bridge most international graduates use to get their first U.S. job. Here is what matters when that job is at a Korean company, and the questions that protect you before you sign.
How OPT works
Optional Practical Training (OPT) lets F-1 students work in a job directly related to their major. Most graduates use post-completion OPT after finishing their degree.
- Job relevance: the work must be closely related to your field of study. You do not need a job offer to apply.
- Start date: you can only start working once you have your EAD card and the start date on it has arrived.
- Reporting: report employer, address, and contact changes on time, usually through your school’s portal.
- Deadlines: the application window opens before your program end date and closes after it, so talk to your DSO early.
Watch your unemployment days
OPT comes with a limited number of unemployment days, and time spent without qualifying work counts against them. If you use them all up, your OPT is no longer valid. This is the rule that catches people between jobs.
I break down the exact day counts, what counts as employment, and how to track them in OPT unemployment days explained.
STEM OPT: what your employer has to do
If your degree is on the DHS STEM list, you can apply for a STEM OPT extension. It is more restrictive than regular OPT, and most of the extra rules fall on the employer. DHS’s Study in the States says a STEM OPT employer must be enrolled in E-Verify and provide formal training to the student (SEVP).
| Requirement | What it means for you |
|---|---|
| E-Verify employer | The company must be enrolled in E-Verify and in good standing. |
| Form I-983 | You and your employer sign a training plan before you start, and update it before material changes such as a new supervisor or pay change. |
| Paid, degree-related job | The role must be paid, related to your STEM degree, and comparable to what a U.S. worker with your credentials earns. |
| Real employer relationship | Arrangements without a bona fide employer, such as being placed by a labor-for-hire agency, often do not qualify. |
The full step-by-step is in the STEM OPT extension checklist.
“Does signing my I-983 mean they’re sponsoring me?”
Some HR teams at smaller offices hesitate when a STEM OPT candidate hands them Form I-983, because they assume it is visa sponsorship. Candidates tell me that moment is scary: the job feels like it could disappear over a form.
The I-983 FAQ treats the employer’s signature as a certification that it will follow the STEM OPT rules. Neither official page describes it as H-1B sponsorship.
Ask early and calmly: “Are you enrolled in E-Verify, and has anyone here signed an I-983 before?” If not, offer to connect HR with your school’s DSO.
Why Korean companies hire OPT graduates
New Korean battery, auto, semiconductor, and appliance plants need engineers, quality and supply chain staff, and bilingual coordinators. Many of these roles fit recent graduates, and OPT lets a company hire you without filing a visa petition on day one.
The catch is that OPT is temporary. If the company wants to keep you, it usually has to file an H-1B petition. That is why the sponsorship conversation should start before you sign.
What I tell candidates to ask
- “Is the company enrolled in E-Verify, and will you sign Form I-983 for STEM OPT?”
- “Am I hired directly by the company, or through a staffing agency?”
- “Have you sponsored H-1B for this role before, and when would you file?”
- “If I am selected in the H-1B lottery, will you file a change of status so I can use the cap-gap extension?”
A good employer will answer these clearly. If the answers are vague, ask more before you accept. For the bigger picture, I cover visa sponsorship at Korean companies in a separate guide.
“Will Korean companies stop hiring OPT grads over the proposed fee?”
The proposed rule (Federal Register, Oct. 8, 2026) would charge schools $70,000 for an initial OPT recommendation and $30,000 for later ones such as a STEM extension, and it says schools may pass the cost to students or employers.
It is a proposal, not a final rule, and nothing has changed yet. If you are interviewing now, it is fair to ask: “Has the company talked about how it would handle this if it becomes final?” More in what the proposed OPT fees mean.
FAQ
Can I work for more than one company on OPT?
On regular post-completion OPT you can have more than one employer, as long as the work is related to your degree and you report it. STEM OPT requires a separate I-983 and an E-Verify employer for each job.
Do Korean companies sponsor H-1B after OPT?
Many do for professional roles, but it depends on the company, the role, and the wage level. Ask early and get the plan in writing if you can.
Can I travel while my OPT application is pending?
It is risky. Many schools caution against it. Talk to your DSO before booking a trip.
Not legal advice; every case is different. Rules change, so confirm what applies to you with your school’s DSO and an immigration attorney.
