In the US, tipping is an expected courtesy for exceptional service, but there are certain people who can't accept tips, regardless of the quality of their work. No matter how much you appreciate the service of a flight attendant, they are not allowed to accept gratuity. Sometimes, a specific establishment will ban tipping, as they pay their workers fair wages without gratuity. A few of the hottest restaurants in New York City have started adjusting their prices so that their employees don't have to rely on tips.

However, some worldwide corporations don’t allow their workers to accept tips at any time, even if their employees are working for minimum wage. When the good people who work at McDonald's decline your tip, they're not being rude or unappreciative, it's simply not their decision.