원문 : http://en.wikipedia.org/wiki/Tip
A tip (also called a gratuity) is a payment made to certain service sector workers in addition to the advertised price of the transaction. The amount of a tip is typically calculated as a percentage of the transaction value before applicable taxes.[1] Such payments and their size are a matter of social custom. Tipping varies among cultures and by service industry. Though by definition a tip is never legally required, and its amount is at the discretion of the person being served, in some circumstances failing to give an adequate tip when one is expected may be considered very miserly, a violation of etiquette, or unethical. In some other cultures or situations, giving a tip is not expected and offering one would be considered condescending or demeaning. In some circumstances (such as tipping government workers), tipping is illegal.[citation needed].
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In Australia, tipping was relatively uncommon and traditionally not encouraged (similar to the UK), however it has grown to be part of main stream hospitality. Service providers in other industries do not expect a tip, though it is always appreciated.
When using credit cards, a line is usually included for a tip to be offered if desired, but the practice remains entirely discretionary. (It has become common to round restaurant bills up to the nearest dollar or ten-dollar multiple, with the additional amount forming the tip.)
The tipping practice of American tourists is increasingly common at some hospitality establishments in larger cities for exceptional service. In recent decades, tip jars have become more widespread in some urban areas although it is still regarded by locals as a personal and optional choice.
Casinos in Australia generally prohibit tipping of gaming staff, as it is considered bribery. (For example, in the state of Tasmania, the Gaming Control Act 1993 states in section 56 (4): "it is a condition of every special employee's licence that the special employee must not solicit or accept any gratuity, consideration or other benefit from a patron in a gaming area.")[16] Similarly, tipping government officials is not customary and will usually be interpreted as bribery (although a non-monetary gift such as flowers or a card is acceptable if one wishes to acknowledge exceptional service).