Tipping the dealer is a common etiquette that professional and conventional gamblers follow when they are in a casino. However, it is entirely your choice to tip the dealer and waitresses. There are no obligations to do so. When players receive a big win, they give a tip to the dealer to appreciate them for hosting the game for everyone. Similarly, people tip the waitresses for their constant rounds to offer free drinks. Dealers and waitresses work for minimum wages. Tipping is considered a gesture to convey that the dealer has contributed positively to your gaming experience.