That organization always seemed like a bunch of ******** to me.
They exist partly because some people are too damn stupid to make decisions for themselves regarding common sense safety practices.
I've been in construction since 1986. I've done things that would make the OSHA guys cringe. They operate from ivory tower offices and push protocols that often don't work and only burden the company and the employees.
Yes, they have done some good but a smart and competent employee knows how to do dangerous work without getting hurt. Each year, there are fewer and fewer of us though as these bullshit regulations get enforced.
I've used circular saws with pinned or missing guards for most of my career and have never been cut because I know what I am doing. A dumb *** can hurt himself with a foam hammer.
I've worked on roofs for most of my career. I know what feels right and what doesn't. When they pushed safety harnesses on us for roof work, I pushed back. Dragging a saw cord, an air hose for the nail gun and a "safety" line was a recipe for trouble and a huge tripping hazard.
A competent Carpenter does not need to be told how to be safe.
In the early 2000s, we worked a job where the roofs were an 8 in 12 slope. That is 33 degrees like seen in this photo:
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This is an uncomfortable slope to work on so I always put 2 x 4 cleats down to give me a ledge to feel safer. OSHA would have me tied off to a rope or cable mounted at the ridge/peak. The harness is intrusive and cumbersome. It makes me sweat and feel angry. Wearing a harness in cold weather is still a pisser but nowhere near as bad. If one can't nail cleats to the roof sheeting, the options are the harness or scaffolding below the work area.
Back when my old company was still building houses, there was huge resistance to the harnesses. They invested in some bolt on scaffolding that was a godsend! This attaches to the top plates of the wall frame and rests against the outsides of the walls. It allows 2 planks to be used so it was plenty wide enough. We could frame the roof, sheet and nail it then remove the scaffold for use in the next house. Other jobs we worked employed full height scaffold that started at the ground and ran the full height of the building.
Here is the rub though....
Once you get used to the scaffold, you can lose some of your guts-balls-nerve for walking on roofs without it. You get accustomed to the "training wheels" and either relearn how to be comfortable with it or wear a harness.