Do part-time jobs pay while doing an MS in the US? 

Yes, it is possible to work part-time while pursuing a Master's degree in the United States. Many universities offer opportunities for students to work on campus in various positions such as research assistants, teaching assistants, or administrative roles. In addition, students may be eligible to work off-campus through the Optional Practical Training (OPT) program, which allows international students to work in their field of study for up to 12 months after graduation.

However, it is important to note that the number of hours a student can work per week is limited by law and varies depending on the type of visa they hold. For example, F-1 visa holders are typically allowed to work up to 20 hours per week while school is in session and up to 40 hours per week during school breaks.

It is also important to carefully consider the time commitment of a part-time job while pursuing a Master's degree, as coursework and research can be demanding. It is important to maintain a balance between academic responsibilities and work commitments to ensure academic success.