Works themselves into the ground - Idioms by The Free Dictionary
work (oneself) into the ground (redirected from works themselves into the ground)
work (oneself) into the ground
To work oneself to the point of illness or exhaustion. If you keep working 80-hour weeks, you'll work yourself into the ground sooner than later.
work (or run) yourself into the ground exhaust yourself by working or running very hard. informal
drive/run/work yourself into the ˈground work so hard that you become extremely tired: You need to be careful, or you’ll run yourself into the ground before long. ♢ With only two or three hours’ sleep a night, he was driving himself into the ground.