Yes, international students on an F-1 visa in the United States are generally allowed to work part-time during their studies under certain conditions. Here are the main types of part-time employment options available to F-1 visa holders:

1. On-Campus Employment: F-1 students can work on-campus for up to 20 hours per week while school is in session and full-time during school breaks and holidays, as long as they maintain their full-time student status. This type of employment can include jobs within the university or college campus, such as working in the library, cafeteria, or as a teaching assistant.
2. Off-Campus Employment (with Authorization): Off-campus employment is also possible, but it usually requires specific authorization from the U.S. Citizenship and Immigration Services (USCIS) or in some cases, from the designated school official (DSO) at your institution. The two main categories of off-campus employment for F-1 students are:
   • Curricular Practical Training (CPT): This allows students to gain work experience related to their field of study as part of their curriculum. CPT requires authorization from the DSO and is typically available after one academic year of study.
   • Optional Practical Training (OPT): OPT allows F-1 students to work in a job directly related to their major field of study for up to 12 months (or up to 36 months for STEM degree holders). OPT requires an application to USCIS and approval before you can start working.

It's important to note that while F-1 visa holders can work part-time on-campus without special authorization, off-campus employment options like CPT and OPT have specific eligibility criteria, application processes, and time limits. Also, working without proper authorization can jeopardize your immigration status.

Furthermore, it's essential to consult with your designated school official (DSO) at your institution's international student office for guidance on your specific situation and to understand the rules and regulations regarding employment for F-1 students. Violating these regulations can have serious consequences, including visa revocation and deportation.