One absolute I can state, if you're going to do stupid things you best be damn tough!
OSHA came along long after I was in the trades, and I'm old school as all hell, but given the damn foolishness I see, and the pathetic humps getting paid to be craftsmen these days OSHA ain't strong enough. I see a fool with a Smart Phone on a job I know which one has the brain, and for the most part I want to be away from both.
I still have the scar under my chin from getting stupid with a Skill Rotohammer back in 65. I got stupid that day and removed the side handle so I could run a 2" hole through a poured wall. It was easier. I paid! Still hurts remembering it. I also remember looking up 12 decks and timing how long it took a first year helper clinging to a Rotohammer as he rode it over the edge and back on that deck cause he caught a rebar with the bit. Super on the job had the sense to pull the main after doing a little quick calculating and the drill stopped with the kid over the deck.
You're born without much smart, you and you alone can cure that. You're also born with just so many chances to survive stupid. Trick is to die of old age without using those chances up.
Now I know the young bucks won't agree, but I can't abide anybody on a job wearing shorts. That's just begging to get hurt, and it's the least of the things I see.