In my experience, when these things happen to a labourer, it's because they are deploying what they optimistically would call initiative and using the tool in a way it clearly wasn't intended to be used.
That's the one. Or running themselves over with a scissor lift because they can't be bothered climbing into it to drive it so walk in front of it driving it on the tether.
In my experience, when these things happen to a labourer, it's because they are deploying what they optimistically would call initiative and using the tool in a way it clearly wasn't intended to be used.