Although the origin of tipping may come from the extra

Although the origin of tipping may come from the extra satisfaction brought by the service, it has been a general understanding in western world that the tip is a part (sometime a significant part) of the income the service providers depend on. So tipping may not be necessarily a way of showing only appreciation. In some cases it is not entirely voluntary. For example in US, the room service charge by most hotels automatically includes the tips. Many restaurants add tips to the bill whenever they serve a table with more than 8 people.

Some up-scale hotels and restaurants in China learnt very quickly that the tips could be an extra income for the companies, but not the individuals who provided the service directly. So the tip there is indeed a part of the price for the service.
Posted by JH at 2005-01-13 03:48:53
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Top Two Differences in China