Tipping culture indeed varies significantly across the globe, with different countries and regions having their own customs and expectations. This variation can be influenced by factors such as cultural norms, economic conditions, and even legal regulations. Let's explore some examples of tipping practices in different parts of the world:

 1. United States: Tipping is deeply ingrained in American culture, and it is customary to tip service workers such as waitstaff, bartenders, taxi drivers, and hotel staff. The general guideline is to tip around 15-20% of the bill, although this can vary depending on the quality of service received. Failure to tip adequately may be seen as rude or inconsiderate.

 2. United Kingdom: Tipping in the UK is less prevalent than in the US. It is customary to leave a 10-15% tip in restaurants, especially for exceptional service. However, many restaurants include a service charge in the bill, so it's important to check before adding an additional tip. Tipping in other service industries like taxis or hair salons is less common, but rounding up the bill or leaving small change is appreciated.

 3. Japan: Tipping is generally not practiced in Japan and can even be considered rude. The Japanese culture places great emphasis on providing exceptional service as part of the job. Instead of tipping, expressing gratitude and saying "thank you" is more appropriate. Attempts to tip may be met with confusion or refusal.

 4. Australia: Tipping in Australia is not as common or expected as in the US. However, it is increasingly becoming more common in upscale establishments. If exceptional service is received, leaving a 10% tip is appreciated. In many cases, service charges are included in the bill, especially for larger groups.

 5. France: In France, a service charge is typically included in the bill, referred to as "service compris." However, it is customary to round up the bill or leave a small additional tip as a token of appreciation for good service. This additional tip is usually around 5-10% of the bill.

 It's important to note that tipping practices can change over time, and there can be variations within regions and establishments. It is always advisable to research or ask locals about the tipping customs of a specific country or region before traveling.

 References:
 - The New York Times: https://www.nytimes.com/2018/03/01/travel/tipping-around-the-world.html
 - The Telegraph: https://www.telegraph.co.uk/travel/advice/tipping-etiquette-around-the-world/
 - Travel + Leisure: https://www.travelandleisure.com/travel-tips/etiquette-manners/tipping-guide-around-the-world