They are not being 'deprived' of anything. They agreed to exchange their labor for a fixed price, and they received that price. There was no 'deprivation' anywhere in the system.
If you're withholding the fruits of labor from workers because "too bad, bro; you signed the paper" then you're not really trying to be kind to anyone. You just want to be rich and appear to be kind.
How much of the worker output actually is his personal accomplishment, and how much is synergy effect coming from the fact that the employer gave them tools, materials, support of other workers, standard operating procedures, know-how? Therefore not all "fruits of labor" actually belong to a worker.
If you're withholding the fruits of labor from workers because "too bad, bro; you signed the paper" then you're not really trying to be kind to anyone. You just want to be rich and appear to be kind.