If people are so desperate to meet their basic needs that they will take a low paying job, then prohibiting those low paying jobs is the opposite of what you want to do. And it doesn't matter how much power the employer has, the only thing he is able to do in a free market is offer people a wage in exchange for a service. If they are not happy with the worker, they can end that employer-employee relationship, which leaves the worker no worse off than he was before.
If the job needs to be done, it will get done even if it requires low skills. In that case, you won't be killing jobs, jsut redistributing wealth.
How can you even make that statement?
In example #1, no one got paid more. Instead, one worker is made to work harder with no increase in pay.
If a worker is working more hours than what the contract and the law says, it's illegal and I don't count it because it shouldn't happen and the worker should sue the employer for cheating the legal system. If he stops doing "important stuff" in order to do the cheap stuff, others will do the "important stuff".
In example #2, A MACHINE does the job.
So we just increased productivity, and increased efficiency. BTW, who created and designed that machine? Maybe someone got the minimum wage, we created the machine and therefore wealth and at the same time increased productivity.
In example #3, we have no idea if someone somehow gets a pay raise. For all we know, the pre-cut peppers could be produced by child labor in a third-world country.
If the pre-cut peppers are produced by child labor in a third-world, I say we should ban them from selling their child labor products here. Until we ban that kind of thing, there's a loop in the system we have to fix. This system is far from perfect, we have to get better laws.
In none of those examples do we see Dan the Drunk, who isn't worth minimum wage, suddenly start making it. Please note that THAT is the point I'm trying to make.
That's because you just ignored the fact that the employer could simply hire Dan the Drunk for the minimum wage.
There are simply too many ways around a minimum wage, in most cases, for it to do anything. (And even if it did--congratulations! You just caused every employer to raise prices to compensate! Now those "wealthier" employees can spend their newfound wealth on more expensive goods and services. Winners all around!)
If the employer raises prices because he has to pay minimum wage, there's a wealth redistribution between higher paid jobs and lower paid jobs.
Actually, history shows minimum wage is, at best, a joke, and at worst, an impediment to workers, and to the economy at large.
History shows minimum wage works very well when it's not an excesive number.