Common Pitfalls and Denials

STEM OPT applications are denied or trigger Requests for Evidence (RFEs) for a predictable set of reasons, most of which relate to missed deadlines, incomplete Form I-983 training plans, employer E-Verify issues, or status violations that accrued during the initial OPT period.¹

Filing Deadline Errors

The STEM OPT extension has two simultaneous filing deadlines that must both be satisfied: the application must reach USCIS before the current OPT EAD expires, and it must be filed within 60 days of the STEM-endorsed I-20 issue date.¹ Missing either deadline renders the application untimely. USCIS will reject an untimely filing, and the student's work authorization will lapse with no 180-day automatic extension.

Students sometimes misread the 60-day window as starting from the date they received the I-20 rather than the date the DSO issued it. The 60-day clock starts on the I-20 issue date printed on the form.⁵ A student who waits to receive the STEM I-20 by mail and then delays filing can easily fall outside the window even if the I-20 was issued with time to spare.

A related error is filing the STEM I-20 request with the DSO too late. Students may not realize that the DSO often needs 5 to 15 business days to process the I-983, enter the SEVIS recommendation, and issue the updated I-20. Requesting the DSO recommendation fewer than two weeks before the OPT end date risks running out of time.⁶

Wrong Eligibility Category on Form I-765

Form I-765 has dozens of eligibility categories, and STEM OPT extension falls under category (c)(3)(C). Filing under the wrong category — for example, (c)(3)(B) which is used for initial post-completion OPT — results in a rejection or denial.⁴ The rejection is not automatically correctable with a simple amendment; the student must refile from scratch with the correct category, and if the original deadline has passed, the application is untimely.

Missing or Incomplete Documents

USCIS will reject filings that are missing required documents, including the STEM-endorsed I-20 (which must have been issued within the 60-day window), the copy of the qualifying STEM degree or official transcript showing degree conferral, the copy of the current OPT EAD, and the employer's E-Verify Company ID Number on the form.⁴ An unsigned Form I-765 is also grounds for rejection before the application is ever reviewed.

Employer-Related RFEs

The most common RFE category for STEM OPT relates to the employer's bona fide employer-employee relationship.³ USCIS issues these RFEs when the employer type, the training plan description, or E-Verify status raises questions about whether a genuine training relationship exists.

Staffing agencies, consulting firms, and third-party placement companies trigger employer-relationship scrutiny because labor-for-hire arrangements typically cannot satisfy the bona fide employer-employee requirement.¹ If the student is placed at a client site and supervised by the client's employees, the employer-employee relationship is with the client, not the agency. DHS accepts the Form I-983 signed by the client (if the client maintains the relationship) or by the agency only if the agency provides direct supervision and training — not the client's personnel.³

E-Verify status issues trigger a separate category of RFE. If the employer's E-Verify number listed on Form I-765 does not match an active enrollment in the E-Verify system, USCIS will issue an RFE requesting evidence of current, valid E-Verify enrollment.¹ An employer whose enrollment is in terminated or probationary status cannot sign the Form I-983 until the status issue is resolved.

Weak or Generic Training Plans

A Form I-983 training plan that reads as a generic job description without articulating a specific connection between the student's STEM degree and the work being performed is a common RFE trigger.³ The plan must describe learning objectives in terms that demonstrate the student is building on the technical knowledge from the degree — not merely performing routine job functions that any employee could perform without the STEM background.

For example, a training plan for a software engineer with a computer science degree must describe specific technical skills to be developed (e.g., distributed systems design, machine learning model optimization) and link those skills to coursework from the degree. A plan that lists "writing code" and "working with a team" as the training objectives will likely generate an RFE requesting a more detailed connection to the STEM degree content.⁵

Unemployment Limit Violations

A student who exceeded 90 aggregate days of unemployment during initial OPT has violated F-1 status, and USCIS increasingly uses this as a basis to deny the subsequent STEM OPT extension.² Because unemployment days accumulate from the OPT start date — including weekends and any day the student is not employed at their authorized employer — students who had gaps between jobs, were laid off, or took unpaid leave risk crossing the 90-day threshold without realizing it.

Deleting or altering employment records in the SEVP portal to hide unemployment gaps is fraud and will result in a finding of misrepresentation, which carries much more severe immigration consequences than the underlying status violation.¹

Post-Approval Status Violations

Approval of the STEM OPT extension does not end the student's compliance obligations. Several violations that occur after approval can terminate the extension and trigger a finding of status violation:¹

Failure to report a change of employer to the DSO and obtain a new SEVIS entry is a status violation. The student must not work for a new employer until the DSO has entered the new employer information in SEVIS, even if the new position is directly related to the qualifying STEM degree.

Failure to complete the 12-month self-evaluation within 10 days of the evaluation deadline is a status violation. The evaluation must be co-signed by the employer and submitted to the DSO within 10 days of the evaluation period end.

Accumulating more than 60 additional days of unemployment during the STEM OPT extension period (150 aggregate days across both OPT periods combined) is a status violation that can result in termination of the STEM OPT authorization.²

Working fewer than 20 hours per week for any employer — whether due to reduced hours, unpaid leave, or part-time scheduling — does not satisfy the minimum employment requirement and is a program violation.¹ The 20-hour minimum applies per employer, so a student working 15 hours per week for two employers (30 hours total) satisfies the requirement, provided both employers are on the EAD and have signed Form I-983 training plans.

References

1. Optional Practical Training Extension for STEM Students (STEM OPT) — USCIS(accessed Apr 18, 2026)
2. STEM OPT Extension Overview — Study in the States (DHS)(accessed Apr 18, 2026)
3. Improving and Expanding Training Opportunities for F-1 Nonimmigrant Students With STEM Degrees — Federal Register(accessed Apr 18, 2026)
4. Rejections, Denials, and RFEs for Post-Completion OPT — San Jose State ISSS(accessed Apr 18, 2026)
5. STEM OPT Extension — USC Office of International Services(accessed Apr 18, 2026)
6. STEM OPT Extension — UT Dallas ISSO(accessed Apr 18, 2026)