Are you using Marxist concepts deliberately, or in ignorance? Because "wage slavery" is some hard-left crapola.
“At will employees” whether hourly or salaried live paycheck to paycheck (after their two week hiring period) at the pleasure or displeasure of their supervisors.
Hourlies have a bit more protection through the Fair Labor ad Benefits Act but “exempts” are basically SOL.
If the boss wants you to work 60 hours some week “suck it up:”
This isn’t Marxism...this is Adam Smith reality,
Get a job and find out!