Workers in the "entertainment" industry rely on tips the most.
Food Prep Workers and Servers are the most generous tippers overall compared to other occupations.
Except, oddly, when it comes to tipping other food servers.

PayScale's 2013 Tipping Study shares some interesting facts about how tips affect income and how factors like gender, income, job type, age and location affect tipping behavior.
The three jobs with the highest median hourly tips are Strippers / Exotic Dancers ($25.40/hour), Gaming Dealers ($12.80), and Sommeliers ($10.10).
Food Preparation and Service Workers tip waiters and waitresses 19.5 percent, tying them for sixth place out of the 17 occupations PayScale surveyed. You'd think they'd be the most generous, right? They were also second most likely NOT to tip other food servers.
People who earn under $25,000 a year tip lower than any other income level across the board. They are markedly tighter with Food Servers (they tip 15.2 percent, while all other income levels tip 19.2 percent or more) and Taxi Drivers (they tip 4.8 percent, compared to between 10 percent and 15 percent for other income levels).
We're just not going to make any other comments on that.
People who make over $200,000 a year tip their dog walkers 10 percent, almost double what the group making between $100,000 and $200,000 report tipping (5.2 percent). Most other income groups stiff their dog walkers.
Gen Y tips Food Delivery Workers 14.3 percent. That's a lot more than Gen Xers and Baby Boomers, who only tip 10.3 percent.
Fast Food Workers report earning a median of 40 cents per hour in tips.
Want to find out other facts and figures about tipping behavior? Check out the full study at PayScale.com.
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