As salamu alaikum. I am a teacher working in a university. There is a rule set by the the administration that a teacher must work at least 35 hours/week whether there class or not. So if someone wants to do a part time job in any other institution without hampering the class or exam work of full time job, then will it be haram? For your kind knowledge the administration doesn't approve such part time jobs. Jazakallah khair.