perquisite

(noun) an incidental benefit awarded for certain types of employment (especially if it is regarded as a right). Synonyms: fringe benefit, perk. Example: "A limousine is one of the fringe benefits of the job."

(noun) a right reserved exclusively by a particular person or group (especially a hereditary or official right). Synonyms: prerogative, privilege, exclusive right. Example: "Suffrage was the prerogative of white adult males."