Well, in USA, for foreign students there's the OPT and CPT programs that allows them to get jobs and internships in the area of their study, and even work in th

Well, in USA, for foreign students there's the OPT and CPT programs that allows them to get jobs and internships in the area of their study, and even work in the US for a limited number of years (2 or 3 depending on what they studied) after their graduation. Also, they have very precise definitions of what work is considered to be in a given field of study. So for instance, a foreign student can't be a CS major and then go work as a chef in a restaurant. However, they can work at tech companies as a software engineer.