Part-Time OPT Explained: Pre-Completion Limits and the 20-Hour Rule
Learn when F-1 students can work part-time on OPT, how pre-completion part-time limits work while school is in session, and why post-completion OPT requires 20+ hours.
Direct answer
Part-time OPT usually refers to pre-completion OPT while you are still enrolled: during the academic term, pre-completion OPT is limited to 20 hours per week or fewer. After you begin post-completion OPT, employment must be at least 20 hours per week in a job related to your major; dropping below that can start or continue unemployment-day counting. “Part-time” in an offer letter does not override these immigration hour rules.
What You Should Know First
- Pre-completion part-time ≠ post-completion under-20-hours.
- Post-completion OPT has a 20-hour minimum for qualifying employment.
- Pre-completion time used reduces remaining post-completion months.
Pre-completion OPT while school is in session
If you have a pre-completion OPT EAD and school is in session, you are generally limited to part-time work (20 hours or fewer per week). During official school breaks, full-time pre-completion work may be allowed. Always match the dates on your EAD and the school calendar.
CPT is a separate authorization. Do not combine assumptions across CPT and OPT hour rules without DSO confirmation.
Sources: USCIS Policy Manual: Practical Training (Vol. 2, Part F, Ch. 5); F-1 Optional Practical Training (OPT)
Post-completion OPT and the 20-hour floor
On post-completion OPT, qualifying employment is generally at least 20 hours per week. Multiple jobs can sometimes combine to meet the threshold if each is related to your major and properly reported. Falling below 20 hours can consume unemployment days toward the 90-day (or STEM 150-day) limit.
Fictional example: internship that “goes part-time”
Jonas is fictional and on post-completion OPT. His internship cuts him to 15 hours per week. Unless he adds related work to reach 20 hours or accepts unemployment-day counting, he risks burning OPT unemployment. The employer’s “part-time intern” label does not create a special immigration exception.
Your Action Checklist
Common Mistakes to Avoid
- Working full-time on pre-completion OPT during the academic term.
- Assuming unpaid or volunteer roles automatically satisfy hour rules.
- Ignoring that pre-completion months reduce post-completion availability.
Count your OPT unemployment days
Avoid the 90-day limit — live counter synced to your OPT dates with compliance reminders.
Also see USCIS case status tracker features
Frequently Asked Questions
Can post-completion OPT be part-time?
Post-completion employment must generally be at least 20 hours per week. Less than that typically does not qualify as employment for stopping the unemployment clock.
Do two 10-hour jobs count?
They may combine to meet 20 hours if both are related to your major and correctly reported. Keep clear records for each employer.
Does STEM OPT use the same 20-hour idea?
STEM OPT also expects qualifying engagement with the employer under the training plan and hour expectations used for unemployment rules. Follow STEM reporting and I-983 duties.
Official Sources
Rules can change. We checked this guide against the primary sources below; always open the current form instructions or agency page before acting.
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Written by Vinay Kumar
Vinay is a content writer at TrackMyOPT who specializes in immigration guidance for international students. All content is researched using official USCIS, SEVP, and Department of Labor sources and reviewed for accuracy by the TrackMyOPT team, which includes former F-1 students who navigated OPT, STEM OPT, and H-1B transitions firsthand.