Dining out, taking a taxi or being served in a bar. All places where you need to tip.
Not in Japan
If you give a taxi driver more than the correct amount he’ll be perplexed and hand it back to you.
It is a great thing about Japan – no arguments with your friends about how much to tip, no disgruntled workers without enough money to pay the bills from lack of tips and more money to spend on things that matter… like UFO catchers.