Feature	STEM Programs	Non-STEM programs
Eligibility	Graduates from designated STEM fields	Graduates from all other fields
Standard Duration	12 months (days of unemployment included)	12 months (days of unemployment included)
Extension	24-month extension available	No extension available
Total OPT Duration	Up to 36 months	Up to 12 months
Application Timing	Can apply upto 90 days before and up to 60 days after completion of degree	Can apply upto 90 days before and up to 60 days after completion of degree
Application Process	Requires USCIS approval, with a detailed job description	Requires USCIS approval, with a detailed job description
Employer Requirements	Employers must be enrolled in E-Verify for extension	No specific employer requirements
Unemployment Limit	150 days (90 days initial + 60 days STEM extension)	90 days
Post-OPT Options	Switch visa status, pursue further education, or leave U.S.	Switch visa status, pursue further education, or leave U.S.

Additional Considerations:

Processing Time: USCIS processing can take several months, so apply early to ensure timely approval.

Days of Unemployment: The days of unemployment count as part of the 12-month OPT period, meaning that if a student is unemployed for a certain number of days, those days are subtracted from their total available OPT time.

Travel Considerations: Travel during OPT requires proper documentation to re-enter the U.S.

By understanding these differences and planning accordingly, you can maximize your opportunities during the OPT period and beyond.