A night job is the opposite of a day job—you work at night and sleep during the day. Also called third shift, night jobs provide career opportunities for night owls. Many industries need night workers; qualifications and job duties vary depending on the specific position. For example, a mail sorter doesn’t need the same training or skills as a firefighter, but both could work third shift hours. As a night worker, your responsibilities include staying awake and alert during your night-time shift and making sure you get enough sleep during the day.