People who can't do a job should be replaced with someone who can. If a company still has to hire a warm body to do that job, those employees are automatically not useless. Every person who puts in 40 hours, no matter what their purpose, is entitled to a living wage. That doesn't make all labor equal. Highly skilled workers will always demand more money than what they'd need to live comfortably. With lower skilled jobs companies pay much less for labor, but in either case businesses still have to compensate employees for their time. Our time is very finite and extremely valuable. Honestly, our current 40 hour work week is demanding too much as it is. However useless you think someone's job is, if their company could get by without someone doing that work they probably would, but as long as somebody is doing the job and putting in the hours that employee deserves a living wage.