Taxes and laws are oppression, not job offers on a free market.
So if I give you a choice between death by gunshot or death by hanging... that's not oppression, right? As long as you've got a choice, it's not oppression, right?
That is only an analogy if the employer in the first statement is offering a job and then banning the potential employee from doing anything else. Criminal A, in offering a choice between a gunshot or hanging to Victim B, is kind of like a Government A that offering choices to Employer B, either employ people at a particular wage Government A approves of or don't employ anyone at all.
In both cases, the A's oppression stems from the forceful limiting of B's liberty. , therefore they have the option to do the only job available (work in a sweatshop) or die by starvation.