As an apprentice, I was working at a boarding school. We were rewiring the dorms, and brickies putting up some new walls. I was in the loft space, electrician below. As I stepped onto the joists towards the large loft hatch, I slipped falling thru the hatch. I managed to catch the edge of the hatch door, but the effect caused me to swing like a gymnast on bars, with my feet knocking over a recently laid block wall. Brickie tried to kill me. Electrician said I wasn't allowed in the loft anymore.
Following week, we were putting up some new light fittings in the sports hall. Electrician was in the loft space, to postion the wood battons for the lights, I was pushing the tower scaffolding around and screwing up the new lights. I had just got down off the tower to move the next position, when I heard a crash and a loud scream. Looked up and saw the electrician hanging from a hole in the hall ceiling, with him yelling to get the tower under him.
We never spoke about it!