A bouncer's duties are to provide security, to check legal age and drinking age, to refuse entry for intoxicated persons, and to deal with aggressive, violent or verbal behavior or disobedience with statutory or establishment rules.
A bouncer (also known as a door supervisor) is a type of security guard, employed at licensed or sanctioned venues such as bars, nightclubs, cabaret clubs, stripclubs, casinos, hotels, billiard halls, restaurants, sporting events, schools, concerts, balls or movie theaters.