MattCollins

At home, never. Wages are generally much better here. In the US and the UK only when service is to a decent standard - they have to earn it.

I had a little incident a few years ago with a business partner in the US. I refused to pay the tip for rude and disinterested service. He was offended by my refusal, made a huge issue of it and paid it himself. That was the end of that business relationship, but no great loss as I had my doubts anyway.

Same as my dog, I make it a rule not to reward bad behaviour so that said behaviour is not reinforced.