Foreign Academic Students, i.e., those holding F visas (F-1 or F-3), have several opportunities to work in the United States:
F-3 visa holders may participate in CPT and Post-Completion OPT. However, they may not work on-campus, off-campus, or in Pre-Completion OPT program.
Vocational and technical students, who hold M visa, are not allowed to work in the United States while attending school. M students may only accept practical training employment after completing their studies. Their period of practical training is limited to six (6) months. Before engaging in practical training employment, these students must apply for and obtain an Employment Authorization Document (EAD or employment card) from the USCIS.
Exchange scholars (J-1 visa holders) are admitted under various programs, some of which require them to work while other programs do not. J-1 visa holders may work in the United States, only if such employment is authorized under the terms of their program.