Examples from the Web for backbreaking
According to political lore, patriot-Americans do the backbreaking work that keeps the country humming.
The combination of heat, hard, backbreaking work, and the necessity for hurry made haying a particularly fatiguing time.Frying Pan Farm|Elizabeth Brown Pryor
It will take some backbreaking investigation to get the whole story, because the files show nothing on any of them.The Electronic Mind Reader|John Blaine
All they had to look forward to from the D'zertanoj was backbreaking labor and an early death.The Ethical Engineer|Henry Maxwell Dempsey