I do work in a coal mine and I am treated as though I have rights, I am treated as a human and I can refuse work.

Kind of, not really. I suspect you are as personally familiar with what it's like to be a male blue collar worker in 3D work as I am with what it's like to be a female sex worker. But the life of a working-class male is rife with emotional and physical suffering and while legally there may be protections for the worker against that, in practice they are often ineffective due to a variety of economic and social pressures that encourage men to endure in silence. A huge part of the opioid epidemic stems from these workers coping with the physical pain these jobs cause because they can't quit or speak-up.