Devonte Yates, 21, is working to get an Associate's Degree in criminal justice and logs in about 25 hours a week at a McDonald's in Milwaukee. To cut down on costs, he lives with his mom and little sister. Still, he struggles to pay his $180 tuition bill each month. He's only able to pay about $90.

He said that the school is more forgiving of him not paying his bill in full while he is still taking classes. But when he graduates next semester, he is worried about how he's going to pay it back.

Besides tuition, some of Yates' expenses that fall under the "other" category are $40 per month for contact lenses and $50 on clothes. Food, at $300, is his biggest monthly expense, as it is for most of the other workers interviewed.

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