An example of nine to five is the hours you are normally required to work as a secretary.
An example of a nine to five might be working at a fast food restaurant just to make a paycheck if you have no interest in food.
Going back to the nine to five after the weekend can be depressing.
Nine to five, what a way to make a living; barely getting by, it's all taking and no giving. - 9 to 5 - Dolly Parton.