Watching gamblers throw their money away weighs on the consciences of some casino dealers, whose job often involves dealing the hands for games like poker and blackjack, distributing the winnings and collecting the losers' chips at the end of a game.
"They're supporting peoples' vices," said PayScale's Bardaro. "They may feel they're making the world a worse place by taking money away from people who often can't afford to lose that money."
Nearly 18% of gaming dealers say their job makes the world a worse place and almost half said their job doesn't do anything to make the world a better place.
The American workplace is less dangerous than it was last year, but at these 10 jobs every day is a gamble.