general
STEM OPT Extension: Eligibility, Employer Requirements, and Timeline
Understand STEM OPT extension criteria, employer obligations, and key timing to protect your status.
What Is the STEM OPT Extension?
The STEM OPT extension allows eligible F-1 students with a degree in a STEM field to extend their post-completion OPT for an additional 24 months, for a total of up to 36 months of practical training. This article explains the core conditions, employer expectations, and a typical timeline, and highlights common errors that can lead to loss of status.
Eligibility Conditions
To qualify for the STEM OPT extension, you must meet all of the following conditions:
- You are currently on valid post-completion OPT.
- You have earned a degree in a STEM field from an accredited U.S. institution.
- Your employer is enrolled in and using the E-Verify program.
- You have a bona fide employer-employee relationship with the employer.
- You will complete at least 20 hours of work per week during the extension period.
- You have not already used a full 24 months of STEM OPT at the same degree level (each degree level can be used once).
Employer Requirements
The employer must fulfill several obligations:
- Participate in E-Verify and remain in good standing.
- Provide a formal training plan (Form I-983) that describes the learning objectives and how the training relates to the STEM degree.
- Assign a supervisor who can oversee the training and attest to the plan.
- Report any material changes to the student’s employment (e.g., change in hours, location, or job duties) to the designated school official (DSO).
Timeline and Application Process
The application must be filed with U.S. Citizenship and Immigration Services (USCIS) before the current OPT ends. You should submit the Form I-765 along with the required documents, including the endorsed Form I-20, the completed Form I-983, and a copy of your job offer or proof of employment. USCIS recommends filing at least 90 days before your current OPT expiration, but no later than the expiration date itself. The extension is approved for up to 24 months, and your work authorization continues automatically for up to 180 days if the application is pending at the time your initial OPT expires, provided the application was filed in time.

Common Errors That Can Cause Loss of Status
Avoid these mistakes to protect your F-1 status:
- Understating your hours: Working fewer than 20 hours per week inconsistently, or having unpaid work that does not meet the required learning objectives, can violate the terms.
- Failing to report changes: Not notifying the DSO of a change of employer, address, or job duties within the required time can invalidate your status.
- Using a non-E-Verify employer: If your employer drops out of E-Verify during the extension, you lose eligibility and may need to transfer to a qualifying employer.
- Not submitting the I-983 correctly: An incomplete or inaccurate training plan can lead to denial.
- Overlooking the 90-day unemployment limit: During the STEM OPT period, you may not accrue more than 150 days of total unemployment (counting both initial OPT and STEM OPT), and exceeding this limit ends your authorization.
Staying Informed
Because STEM OPT rules are specific and can change, it is vital to work closely with your DSO, keep accurate records, and verify each step against official guidance. Understanding the requirements and timeline is the first step to maintaining your legal status while gaining valuable work experience.