(there's) no rest for the weary

(there's) no rest for the weary

One must continue to toil or work regardless of how exhausted one is. A logical variant of the original phrase "no peace for the wicked." Parents of young children know all too well what it's like to have only a few hours of sleep and still have to get up at the crack of dawn—no rest for the weary, as my granny always said. There won't be time for a break, because we'll need to get going on the next phase of the project as soon as this one is done. There's no rest for the weary!
See also: no, rest, weary
Farlex Dictionary of Idioms.

There is no rest for the weary.

Prov. Even people who are worn-out must continue to work. (Describes a situation in which a tired person has to do more work.) By the time I finished doing the laundry, it was so late I had to begin cooking supper for the family. There is no rest for the weary.
See also: no, rest, there, weary
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • drive (one) out of office
  • force (one) out of office
  • force out of office
  • give (one) (one's) head
  • give head
  • give somebody their head
  • give someone their head
  • cooking for one
  • 1FTR
  • as one door closes, another (one) opens