break one’s back

(verb) to work very hard

Example Sentence:

A: Why aren’t you working?
B: What do you mean? Every day, I break my back to get the job done!

I keep breaking my back to lose weight, and I’ve only lost 5 pounds!

Your mother and I have broken our backs to help you!

Media:

Similar idioms:

1. bend over backwards
2. stitch in time saves nine
3. break down
4. work one’s fingers to the bone
5. work like a dog
6. pull one’s weight
7. swamped
8. practice what one preaches
9. work up to
10. what have you got to lose?