>>67780900fuck it, I will eat the vacation.
the concept of labour power comes from Marx and it eventually derives into the surplus value theory. any non-lobotomized rightist knows that "labour" by itself generates no value - heck, efficiency (one of the most valued characteristics in capitalism) seeks to dimish labour for the same returns.
you can spend all day piling a literal mountain of bull shit but only the left will tell you that your useless efforts must be rightfully compensated according to the amount of labor you did.
at the end of the day, value is subjective and while I can understand where Marx came from, I think he would ultimately change his mindset if he (somehow lol) lived to see the 1960s and beyond.