You may begin working only from the start date listed on your Employment Authorization Document (EAD). Employment must be directly related to your field of study and meet minimum hour requirements. Working before the authorized start date is not permitted. Carefully track your unemployment days, as exceeding the allowed limit during OPT can place you out of status.

Once your EAD is issued, review the validity dates carefully. Employment must align with your academic major and be properly documented. Keep detailed records of job offers, start dates, and employer information in case of future immigration filings. Compliance during OPT is crucial if you plan to pursue extensions or change to another visa category.