If you overwork or if someone overworks you, you work too hard, and are likely to become very tired or ill. He's overworking and has got a lot on his mind He overworks and underpays the poor clerk whom he employs. Overwork is also a noun. He died of a heart attack brought on by overwork. + overworked over·worked an overworked doctor. to work too much or to make someone work too much. too much hard work
To work beyond the strength; to cause to labor too much or too long; to tire excessively; as, to overwork a horse
the act working too much or too long; "he became ill from overwork" use too much; "This play has been overworked" work excessively hard; "he is exploiting the students