Because college students themselves have a lot of free time, it is really a waste if they just use it for fun. On the one hand, if you work part-time, you can save family expenses and effectively relieve the pressure at home. On the other hand, it can also increase students' social experience and help them find jobs better in the future. Therefore, under various benefits, the school will not control students to take part-time jobs.
Because no matter whether the students are losing money or earning money, as long as others are still there and not cheated, the school will not suffer, and there is not so much mind to manage. The school is neutral on this issue. It neither encourages nor prevents people from finding part-time jobs.
Besides, it's not easy to manage even if you want to. As a student, he has the ability to act independently. We can't be sure where he will be at the weekend or what he is doing. He won't report all these contents to the school. It's better to have more than one thing.
It is better to control everything than not to control everything. The university itself is relatively free and relaxed, and even the teaching content is basically ignored. Except for failing classes, not many people will bother you if you don't attend classes casually at ordinary times, let alone take a part-time job on weekends.
In addition, for some students from poor families, work-study program is indeed a very good choice. You can be self-sufficient to a large extent, and you don't have to worry about it at home, and you don't have to bear the living expenses at home.
For them, this is something to be encouraged and should be respected. The school itself has to give them grants, not to mention independent work-study programs, so this will not be stopped.