This article was contributed by the STOMP Team.
To tip or not to tip? The truth is it depends on which part of the world you are in. Check out this handy graphic to find out more.
Living in tip-free Singapore, it is easy to forget that people in foreign lands don't always enjoy service charge. In fact, in many parts of the United States, service personnel receive extremely low basic wages because they are expected to earn their tips from their customers. Fail to tip such people, and you might face unexpected hostility.
Meanwhile, in parts of China and Japan, tipping is frowned upon either because service people are not allowed to receive tips by their employers, or because of the perception that one offers tips only to the underpaid.
Either way, you might want to print out a copy of this table to slip into your passport when next you head to the airport.
The first five images show the travelling tips. The rest show other humorous tips.