One of my neighbours always takes his bin in once the dustmen have been. Bin has been out since Thursday and my wife informed me was still there last night.
Went to knock to check everything was ok, but house was in darkness. Knowing he works various shifts I decided to leave it until this morning, but the police beat me to it.
His employers called them as they had not seen him for a couple of days and could not contact him.
The police had a few problems getting in, but the top windows were open. Got the ladder off the van for them and footed it while one investigated. By his reaction, I guessed that my neighbour had died and he confirmed this when he got down.
Now, I can't claim that he was a great friend, but I had known him for a long time and we always had a chat when we bumped into each other. My wife and I are both feeling a bit sad about it and my wife is upset that we didn't call the police last night. (In all honesty, I don't think it would have made much difference.)

I would guess that quite a few window cleaners have found customers in similar situations?