Oversleeping or sleeping through an alarm is not a waking-up problem. Oversleeping is a going-to-bed problem.
Sleep can help you learn better and faster, reduce the risk of error and injury, and perform at your best. The consequences of oversleeping and being late to work can include discipline, demotion, expulsion or termination.
It is important to avoid caffeine, alcohol and tobacco use before bed, as stimulants or depressants ingested or inhaled, in the hours before going to bed, can make it more difficult to fall asleep.