In one word Tom,slack!
This guy has no work ethic at all.
From that first pic, throwing away company property (which it is until it's installed) would get you a warning here.
3 strikes and you're out.
If I was a factory owner and some apprentice from a servicing firm left the old stuff lying around (where it could cause an accident) I'd be into him and his Boss like a rabid dog, real electricians just don't do that sort of thing.
I feel your pain though, mate, I once had a wayward apprentice and him losing a set of keys inside a prison was the last straw for me.
I phoned my Boss to come and pick him up from the worksite, I'd just had enough of that rubbish, 3 years of endless mistakes (not small ones either).
A man can only take so much.
Let's face it, these days if you're not young, you're old - Red Green