Working in semiconductor industry is very tiring and uncomfortable. I have to wear lab coat, hat and mask (even pre COVID) in the lab, and full suit in a cleanroom. In case you don't know, the cleanroom suit has almost no ventilation. You are moving a lot and on your feet, it gets hot. I sweat through my shirt every time I do heavily physical work like maintenance. I was forced to work during COVID. It isn't just physical work either, I have to think fast and understand the intricacies of vacuum instrumentation, electronics, gas pipelines, materials science, etc. both in the lab and when writing reports.
And I have a graduate degree. Most people who go to grad school like doctor, lawyer, manager, software, etc want to sit on their ass in an ACed office, come and go as they please, and get paid 20-30% more than me.