all work and no play (makes Jack a dull boy)

proverb Working too much can be bad for one's health or can make one boring. Come out to the pub with us tonight! All work and no play makes Jack a dull boy. All work and no play isn't ideal, but I absolutely must finish this report tonight. A: "Haven't you ever heard that all work and no play makes Jack a dull boy?" B: "Yes, but that doesn't give me any more time to finish this project—it's still due tomorrow!"

See also: all, and, dull, jack, no, play, work

all ˌwork and no ˈplay (makes ˌJack a dull ˈboy)

(saying) it is not healthy to spend all your time working, you need to relax too