Optional Practical Training is the main employment-authorisation route many F-1 students use to work in the United States in a role related to their field of study. The word “optional” can make OPT sound informal. It is not. It is a regulated part of F-1 status with filing windows, school recommendations, employment rules and reporting obligations.
For graduates, the most relevant form is post-completion OPT. Eligible students can generally receive up to 12 months of OPT at a particular education level. Qualifying STEM graduates may be able to extend that period by another 24 months.
This guide focuses on planning, timing and compliance rather than treating OPT as a guaranteed US job pathway.
What OPT is
OPT is temporary employment authorisation for eligible F-1 students where the work is directly related to the student’s major area of study.
It is not a separate permanent immigration status and does not itself guarantee a future work visa.
Post-completion OPT
Post-completion OPT is employment authorisation used after completing the academic programme. The role must relate directly to your field of study.
This relationship between the degree and the work is central. A job being convenient or well paid does not automatically make it valid OPT employment.
Start with your DSO
Your Designated School Official is a key part of the process. The DSO enters the OPT recommendation in SEVIS and issues an updated Form I-20.
Do not file Form I-765 without understanding the timing of that recommendation.
Current filing window
Current USCIS Form I-765 instructions say post-completion OPT applications can be filed up to 90 days before the programme end date and no later than 60 days after the programme end date.
USCIS also requires the Form I-765 to be filed within the specified period after the DSO enters the OPT recommendation in SEVIS. Because filing-window guidance is technical and can be updated, use the current USCIS form instructions and your DSO’s advice when you actually submit.
Do not wait for a job offer to start planning
A student does not necessarily need to wait until a job offer exists before preparing the post-completion OPT application. Starting early can reduce the risk of losing valuable work-authorisation time to late filing or slow processing.
Employment must be related to your major
The core question is whether the employment is directly related to your major field of study. Keep a clear explanation of how the job duties connect to your degree.
Job title alone is not enough. Duties matter.
The Employment Authorization Document
You generally cannot begin post-completion OPT employment until USCIS approves the work authorisation and the authorised period has begun as shown on the Employment Authorization Document.
Do not treat a pending application as permission to start working unless a specific rule allows it.
Choosing the requested start date
The requested start date must fit within the permitted post-completion window. Your actual EAD validity can also depend on when USCIS adjudicates the application.
Discuss the timing with your DSO, especially if you already have a job offer with a fixed start date.
Unemployment time matters
Post-completion OPT is not designed for unlimited job searching while unemployed. F-1 students on standard post-completion OPT are subject to unemployment limits.
Track unemployment days carefully rather than assuming your SEVIS record will automatically warn you before there is a problem.
Multiple employers and qualifying work
Depending on the arrangement, some students may have more than one qualifying employer. Every role still needs to meet the OPT requirements and be properly reported where required.
Self-employment and contract work need careful review
The rules around employment structure can differ between standard post-completion OPT and STEM OPT. Do not assume a freelance or self-employed arrangement that may work in one stage automatically qualifies under STEM OPT.
STEM OPT adds 24 months
Eligible F-1 students with qualifying STEM degrees can apply for a 24-month STEM OPT extension, potentially bringing the total practical training period to 36 months.
The degree must be in a qualifying field on the DHS STEM Designated Degree Program List and the student must meet the other requirements.
STEM OPT is not simply “extra OPT”
The extension has additional compliance requirements. These include employer participation in E-Verify and the training-plan framework.
Do not wait until the final weeks of ordinary OPT to learn what the STEM extension requires.
Employer must use E-Verify for STEM OPT
Current STEM OPT requirements include an eligible employer enrolled in E-Verify. If you are targeting the STEM extension, ask prospective employers whether they can support the required compliance.
Form I-983
STEM OPT uses a formal training plan completed with the employer. The plan explains learning objectives, supervision, evaluation and how the employment relates to the STEM degree.
Treat it as a genuine training document rather than paperwork to complete after the fact.
STEM filing timing
Current USCIS instructions allow eligible students to file for the 24-month STEM OPT extension up to 90 days before the current post-completion OPT expires.
There is also a timing requirement connected to the DSO’s STEM recommendation in SEVIS, so coordinate the filing with your international student office.
Previously earned STEM degree
In some circumstances, a prior qualifying STEM degree can support a STEM OPT extension, subject to accreditation and other requirements. This is a technical area and should be checked against current USCIS/SEVP guidance.
School transfers and new study
Starting a new academic programme or transferring schools can affect OPT. Do not assume you can freely begin a new full-time course while continuing the same employment authorisation.
Travel while OPT is pending or active
International travel during the transition from study to OPT can be more complicated than travelling during ordinary F-1 study. Your EAD status, job evidence, visa validity and I-20 can all matter.
Ask the DSO before booking a non-refundable trip.
Reporting obligations
Students on OPT have reporting responsibilities involving changes such as address and employment. STEM OPT has additional employer and training-plan reporting.
Keep your SEVIS information current.
Do not confuse OPT with CPT
Curricular Practical Training is generally used for authorised practical training that is integral to the curriculum while studying. OPT is a separate authorisation framework.
Previous CPT use can affect OPT eligibility in some circumstances, particularly where full-time CPT reaches certain durations.
OPT and H-1B are different
OPT lets eligible F-1 students work temporarily in a field related to their degree. H-1B is an employer-sponsored nonimmigrant work classification with its own requirements and annual cap framework for many employers.
Some students use OPT as a bridge while exploring longer-term employment options, but OPT does not guarantee H-1B selection or sponsorship.
Cap-gap issues
Some F-1 students with timely filed or approved cap-subject H-1B cases can receive cap-gap benefits under the rules in force at the time. This is highly timing-sensitive and should be checked with the DSO and current USCIS guidance.
Do not choose a US degree only for OPT
OPT can be valuable, especially for STEM graduates, but course cost, funding, employability, location and employer demand still matter.
Use StepOut’s University Offer Comparison and Study Abroad Budget guides before making a high-cost decision.
Prepare for the job search before graduation
International students can lose valuable OPT time if the job search starts too late. Build employer contacts, internships, projects and interview preparation during the final academic year.
A practical OPT timeline
- Final academic year: meet the DSO and understand eligibility.
- About 90 days before programme end: prepare the post-completion filing where eligible.
- After DSO recommendation: file Form I-765 within the required recommendation window.
- After approval/start date: begin qualifying employment and report it correctly.
- During OPT: track unemployment days and status updates.
- If STEM eligible: start STEM-extension preparation well before ordinary OPT expires.
- Before the end of authorised employment: plan the next immigration, study or departure step.
Common OPT mistakes
- Filing outside the permitted window.
- Waiting too long after the DSO enters the recommendation.
- Starting work before authorisation begins.
- Taking a role unrelated to the major.
- Not tracking unemployment days.
- Assuming every STEM graduate automatically receives the extension.
- Ignoring E-Verify and I-983 requirements.
- Assuming OPT guarantees H-1B or permanent residence.
Where this fits in StepOut’s study-abroad structure
This page owns US post-completion OPT and STEM OPT intent. Use the main Study Abroad pillar for the wider international student journey and StepOut’s application, funding and document guides for preparation before enrolment.
What counts as directly related employment?
The safest approach is to be able to explain, in ordinary language, how your day-to-day duties use knowledge or skills from your degree. Keep the job description, offer letter and your own brief explanation. If a role evolves, make sure the connection to the major remains genuine rather than relying on a broad job title.
Keep your DSO informed
Your international student office is not only for the initial OPT recommendation. Employment changes, address changes, STEM training-plan updates and school-transfer decisions can all require SEVIS action. Report changes promptly rather than waiting until the end of the authorisation period.
Plan for processing uncertainty
USCIS processing times can vary. If you have an employer expecting a fixed start date, explain that employment can begin only when authorised. Do not promise a start date that assumes approval before USCIS has actually granted it.
STEM OPT employer fit matters
A role can be academically relevant yet still fail STEM OPT requirements if the employer cannot meet the E-Verify and training-plan obligations. Ask these questions during recruitment, especially if your ordinary OPT is already well underway.
Use OPT time deliberately
Post-completion OPT is limited, so the first months matter. Keep a record of applications, employment start dates and unemployment days. If a role is only loosely related to your degree, discuss the connection with your DSO rather than assuming the job title is enough.
Prepare for STEM OPT before ordinary OPT ends
If you may qualify for the STEM extension, check your degree’s STEM eligibility, employer E-Verify status and willingness to complete Form I-983 well in advance. Waiting until the final weeks can leave too little time to correct an employer or documentation problem.
Keep employment evidence organised
Save offer letters, job descriptions, pay records, supervisor details and explanations of how each role relates to your major. These records support SEVIS reporting and can help if your employment history is reviewed later.
Plan the next status before the EAD expires
OPT does not automatically continue because an employer wants to keep you. If you are considering H-1B, further study or another route, begin planning early enough to understand deadlines and possible gaps.
Frequently asked questions
How long is standard post-completion OPT?
Eligible F-1 students can generally receive up to 12 months at a given education level.
How long is the STEM extension?
The current STEM OPT extension is 24 months for eligible students and qualifying employment.
Does my OPT job have to relate to my degree?
Yes. Practical training must be directly related to the major area of study.
Can I start working as soon as I submit Form I-765?
Generally no. You need valid employment authorisation and the authorised start date must have begun.
Reader-first rule: OPT is a status-compliance process as much as a job-search opportunity. Work closely with your DSO and recheck current USCIS guidance before filing.
