Part-time work has a bad effect on schoolwork in two ways. Teens have less time to put into their studies, but they also get money in their pockets. Too much money too young is a bad thing. Having a lot of money gives them the cash to fund their social life. So when they are not doing their job, they are out partying – no wonder they have no time to do homework and are too tired to focus in class. Income from a job also allows them to fund bad habits, such as drinking and drugs.