Earlier quoted context omitted.
Every corporation has contempt for its workforce, it's why labor unions are so necessary.
It varies. Not because some corporations are moral, but because happy workers are a good long-term strategy and many corporations are stuck with rolling short-term-ism. They reward the top tier on a three-ish year cycle, so executives only need to make the numbers go up for three years before exiting with a higher paying job and compensation via stock sales. The US has a massive issue in general with rolling corporat…
However a corporation which has a large amount of jobs which require little skill or job-specific training but a lot of effort may actually find the opposite is a good long-term strategy: they have a vast supply of potential employees and hiring and firing is cheap so they can work their employees hard to the point of burn-out and then fire and rehire the next batch. These workers have basically no power over their employer individually. Unions are effectively a way for these workers to exercise some power over their employer as a collective, to get what some workers essentially have automatically due to the labour market in which they work.