Can International Students Work in the USA? F-1, CPT, OPT, and Risks

Yes, international students can work in the United States, but only through specific, pre-approved channels tied to their visa type. F-1 academic students have several options: on-campus jobs, Curricular Practical Training, Optional Practical Training, a STEM extension, cap-gap coverage during an H-1B transition, and off-campus work based on severe economic hardship. M-1 vocational students are limited to practical training after their program ends. Almost every category requires authorization from a Designated School Official (DSO), and most also require approval from U.S. Citizenship and Immigration Services (USCIS) before the first day of work. Working outside these channels, even briefly, is unauthorized employment and ends your legal status with no grace period.

On-Campus Employment for F-1 Students

On-campus work is the simplest option. No USCIS application, no filing fee. Once you’re enrolled and maintaining valid F-1 status, your DSO can approve you to work at your school’s bookstore, cafeteria, library, or any commercial operation on campus that serves students. Certain off-campus locations qualify too, but only if they have a direct educational affiliation with the school.¹

The hours cap is firm: 20 per week while classes are in session. During official school breaks, including winter, spring, and summer, you can work full-time as long as you plan to enroll in the next term.¹ Your DSO monitors your hours, but no federal application is involved.

Curricular Practical Training

Curricular Practical Training (CPT) lets you take an off-campus job when the work is a required part of your degree. Mandatory internships, co-ops, and practicum courses that carry academic credit are typical examples. The job must be directly related to your major, and you need a specific employer offer before your DSO can process anything.²

You must have been enrolled full-time for at least one academic year to qualify. Your academic department certifies that the training meets your program’s educational requirements, and your DSO authorizes CPT in SEVIS and issues an updated Form I-20 listing the employer and work dates. That signed I-20 is your proof of work authorization, and you must have it in hand before you start.³

CPT carries a consequence students often miss. If you accumulate 12 months or more of full-time CPT at one education level, you become permanently ineligible for post-completion OPT at that same level.¹ Part-time CPT doesn’t count the same way, but full-time months add up fast. If OPT matters to your plans after graduation, track those months carefully.

Optional Practical Training

Optional Practical Training (OPT) is the main path F-1 students use to work in their field of study. It doesn’t need to be part of your curriculum. You get up to 12 months of OPT per education level (bachelor’s, master’s, doctorate), and you can use it before or after finishing your program.⁴

Pre-Completion OPT

You can apply while still in school, after completing one full academic year. While classes are in session, you’re capped at 20 hours per week. During breaks you can work full-time. The catch: every period of pre-completion OPT gets subtracted from your 12-month post-completion allotment. A year of part-time pre-completion use cuts your post-graduation OPT in half. A year of full-time use erases it entirely.⁴ Most students save OPT for after graduation.

Post-Completion OPT

Post-completion OPT is what people usually mean by “OPT.” Up to 12 months of work authorization in a position directly related to your field. Unlike on-campus work or CPT, this one requires a federal application. Your DSO first makes a recommendation in SEVIS and issues an OPT-endorsed I-20. You then file Form I-765 with USCIS and pay the fee ($470 online, $520 by mail as of the most recent USCIS fee schedule update), along with photos and copies of prior I-20s.¹

The filing window is strict. You can submit as early as 90 days before your program end date, and no later than 60 days after. Miss the window and you lose the OPT benefit for that education level permanently.¹ Processing runs about three to four and a half months. You cannot start work until your Employment Authorization Document (EAD) physically arrives, and the EAD lists your authorized start and end dates.

Once you’re on OPT, you can’t stay idle for long. You may not accumulate more than 90 days of total unemployment during the 12-month period, and going over that violates your status.¹ You must also report address and employer changes to your DSO within 10 days through the SEVP Portal.⁵

STEM OPT Extension

If your degree is on the DHS STEM Designated Degree Program List, you can apply for a 24-month extension on top of your initial 12-month OPT. That gives you up to 36 months of post-graduation work authorization.⁶ Earning a second qualifying STEM degree at a higher level later on lets you apply for another 24-month extension.

The extension comes with conditions the initial OPT period doesn’t have. Your employer must be enrolled in E-Verify, the federal employment verification system. Staffing agencies and consulting firms hiring STEM OPT students must be enrolled too.⁷ If the company isn’t on E-Verify, you can’t use STEM OPT there.

You and your employer must also complete a Form I-983 training plan before you apply. The plan spells out the skills you’ll develop, your supervision structure, and specific learning goals with timelines. You must work at least 20 hours a week, submit a self-evaluation within 12 months of your STEM OPT start date, and file a final evaluation when the extension ends. Both are due within 10 days of each reporting period’s close.⁸ Significant changes, like a drop below 20 hours per week, trigger a new certification.

Unemployment rules also tighten. Your total allowable unemployment across the initial 12 months and the 24-month extension is 150 days combined, not 150 additional days.⁹ If you already used 60 days during your initial OPT, only 90 remain for the whole two-year extension.

Cap-Gap Extension for H-1B Transitions

Students on OPT who get selected in the H-1B lottery often face a timing problem: OPT expires before the H-1B start date of October 1. Federal regulations close this gap automatically. If your employer files a timely, cap-subject H-1B petition requesting a change of status before your OPT or STEM OPT expires, both your F-1 status and your work authorization extend automatically until April 1 of the H-1B fiscal year, or until the petition’s validity start date, whichever comes first.¹

Timing matters. If USCIS receives the petition while your EAD is still valid, you get both the status extension and continued work authorization. If it arrives after your EAD expires but during your 60-day grace period, your permission to stay in the country extends, but you cannot work in the gap. Students whose employers file for consular processing rather than a change of status don’t qualify. The extension terminates immediately if the H-1B petition is denied, withdrawn, or revoked.¹

Severe Economic Hardship

If an unexpected financial crisis hits after you’ve been in F-1 status for at least one full academic year, you can apply for off-campus work authorization based on severe economic hardship. The hardship must come from circumstances you couldn’t have anticipated when you entered the country: a sharp currency devaluation at home, sudden loss of a financial sponsor, large unexpected medical bills, or elimination of a scholarship or assistantship.¹

You file Form I-765 with USCIS along with documentation of the crisis, such as statements from your sponsor showing changed circumstances or evidence of economic instability at home. Your DSO enters a recommendation in SEVIS and signs your I-20. If approved, the EAD lets you work in any field, not just your area of study. The 20-hour weekly cap still applies while classes are in session, including any on-campus hours you’re already working, and you can go full-time during scheduled breaks.¹

M-1 Vocational Student Employment

M-1 students have far fewer options. You cannot work at all while your program is running. The only employment available is post-completion practical training after finishing your vocational program, and the work must directly relate to your field of study.¹

Your training time is calculated at one month for every four months of full-time study, with a hard maximum of six months regardless of program length. Your DSO recommends practical training in SEVIS, and you file Form I-765 with USCIS before your program end date. Once USCIS issues the EAD, you can begin work, but not before the physical card arrives.¹⁰

Social Security Number and Tax Basics

You’ll need a Social Security number (SSN) before you can start any authorized job. Begin the application online, then visit a local Social Security office within 45 days with your unexpired passport and admission stamp, Form I-94 if available, and your Form I-20. For on-campus work, bring a DSO letter confirming enrollment and identifying the employer. For CPT, bring the I-20 with the completed employment page. If you already have an EAD for OPT, that document works instead.¹¹

On taxes, F-1 and M-1 students in the U.S. for fewer than five calendar years are generally treated as nonresident aliens and are exempt from Social Security and Medicare taxes (FICA) on wages from authorized employment. The exemption covers on-campus work, CPT, OPT, and STEM OPT. Once you pass the five-year mark and become a resident alien for tax purposes, the FICA exemption typically ends for off-campus employment.¹²

Even with no U.S. income, you must file IRS Form 8843 for any year you were physically present as a nonresident alien on an F or M visa. It’s the statement that excludes your days of presence from the substantial presence test. With income, attach it to Form 1040-NR. Without income, mail Form 8843 on its own.¹³

What Happens If You Work Without Authorization

Working without proper authorization is one of the fastest ways to lose your student status. Your DSO is required to terminate your SEVIS record, which instantly cancels all employment authorization and ends the legal status of any F-2 or M-2 dependents on your record as well.¹⁴

Unlike some other status violations, termination for unauthorized employment carries no grace period. You either apply for reinstatement, a difficult process with no guaranteed outcome, or leave the country immediately. You cannot re-enter on a terminated SEVIS record, and ICE may investigate to confirm your departure.¹⁴ A status violation can also complicate future visa applications for years. Every category described above exists precisely because working outside them carries these consequences.

1
eCFR. 8 CFR 214.2 – Special Requirements for Admission, Extension, and Maintenance of Status
2
U.S. Citizenship and Immigration Services. Chapter 6 – Employment
3
Study in the States. F-1 Curricular Practical Training (CPT)
4
U.S. Citizenship and Immigration Services. Optional Practical Training (OPT) for F-1 Students
5
Study in the States. OPT Student Reporting Requirements
6
U.S. Citizenship and Immigration Services. Optional Practical Training Extension for STEM Students (STEM OPT)
7
E-Verify. Am I Required to Participate in E-Verify in Order to Hire F-1 Students Who Seek a STEM OPT Extension?
8
ICE. Completing the Form I-983 Training Plan for STEM OPT Students
9
U.S. Citizenship and Immigration Services. Chapter 5 – Practical Training
10
Study in the States. M-1 Practical Training
11
Social Security Administration. International Students and Social Security Numbers
12
Internal Revenue Service. Foreign Student Liability for Social Security and Medicare Taxes
13
Internal Revenue Service. Form 8843 – Statement for Exempt Individuals
14
Study in the States. Terminate a Student