Under capitalism, a lot of the time, highly dangerous jobs are also highly paid. Kind of a balance that the individual decides to engage with. Same idea behind getting an advanced degree in STEM or law. I think of my job by example, I’m a power plant operator at a large combined cycle plant. No fucking shot I’d be doing this if the pay wasn’t good. I’m around explosive and deadly hot shit all day.
It’s spelled “caste,” and castes are (critically) hereditary. Leaving a caste you were born into is virtually impossible.
People who do more/harder work can get compensated an appropriate amount. Note that this runs at odds to the current system where a CEO makes 1000x their employees salary despite not working 1000x as hard.