backbreaking

Today, instead of men performing backbreaking work on creaking machinery, unkempt grass bends in the light breeze.

According to political lore, patriot-Americans do the backbreaking work that keeps the country humming.

It will take some backbreaking investigation to get the whole story, because the files show nothing on any of them.

All they had to look forward to from the D'zertanoj was backbreaking labor and an early death.

The combination of heat, hard, backbreaking work, and the necessity for hurry made haying a particularly fatiguing time.