heavy work

heav·y work

(hev'ē wŏrk)
A physical demand level, described as the exertion of up to 100 pounds of force occasionally, or up to 50 pounds of force frequently, or 20 pounds of force constantly to move objects.
See also: very heavy work
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in classic literature ?
It seems that the heavy work in the quarries and the new railway gradings is done mainly by Italians.
Emma felt that she could not do too much for her, that Harriet had a right to all her ingenuity and all her patience; but it was heavy work to be for ever convincing without producing any effect, for ever agreed to, without being able to make their opinions the same.
The fitful bursts of sleet had changed into a steady rain and the horses had heavy work even without a load behind them.
It was wild and heavy work, without a drink or thought of drink.
We were to start before old Sol got in his heavy work, but we haven't had breakfast yet."
It was a hard trip, with the mail behind them, and the heavy work wore them down.
She talked to her aunt Bertram-- she must talk to somebody of the ball; but her aunt had seen so little of what had passed, and had so little curiosity, that it was heavy work. Lady Bertram was not certain of anybody's dress or anybody's place at supper but her own.
But midway they encountered an ice-jam which took an hour of heavy work to cross.
Poor as he was, and determined to rise as he was, he nevertheless hired one servant to take the heavy work off of Marian's hands.
But there was little time for laughter in those days, what of our heavy work and of the awfulness of Wolf Larsen's living death.
I passed days in the woods and fields, gunning or picking berries; I spent myself in heavy work; I made little journeys; and all this was very wholesome and very well; but I did not give up my reading or my attempts to write.
Not only were the bars that protect it intact, but the blinds inside of them were drawn, as I had myself drawn them early in the evening, as I did every day, though Mademoiselle, knowing that I was tired from the heavy work I had been doing, had begged me not to trouble myself, but leave her to do it; and they were just as I had left them, fastened with an iron catch on the inside.