However, if you are under 18, you cannot work in a job that the Labor Department considers hazardous, as mentioned above. Employees under the age of 18 cannot work in mining or manufacturing, for example, even if they would be employed by their family. Job Searching Job Listings. What hours are minors allowed to work? The exception to the exception? The FLSA places restrictions on employment for minor workers workers under age 18 , depending on their age, the time of year, the day of the week, and more. State labor laws often differ from federal laws. A lot depends on the teenager in question, their parents' feelings about teenagers having jobs, and school and after-school commitments. One exception to this is that they can work extra hours if they are working for a state-sponsored career exploration program or work-study program through the Department of Labor.