Back when I had just arrived in Korea, I was out having Korean BBQ with non-Korean friends. It was a pleasant evening and we were sat outside. The staff were helpful, we ate well, drank some soju and were feeling merry. The time came to pay. We made the faux pas of asking for the waitress to bring us the bill (see dining etiquette), but never-the-less they obliged despite our ignorance. Each of us paid our share and kicked in a couple of thousand won as a tip. We got up to leave and were a hundred metres down the road when a breathless waiter ran up to us. “Wait”, he shouted, “you forgot some money.”
“It’s a tip for your service”, we replied. He looked offended and thrust the money into my hands, turned and walked away.
It was only after this that I realised that leaving a tip is not customary in Korea. In fact, some may even take it as an insult because it insinuates that you believe they are more lowly than thou, and therefore more in need of your spare change. Occasionally a taxi driver may be glad not to make change of a 10000, for a 9000 fare, and of course, if you are staying in a top of the range hotel, then international staff tipping rules apply, but generally you don’t even need to feel awkward about how much to tip, because you shouldn’t leave one.