Trade guild
A trade guild was a type of collective bargaining association for independent members of a certain trade, such as merchants, artisans or s. Typically, a trade guild differed from a labor union, in as far as, a union represented all employees of the same trade who worked under a single employer. 

Collectors belonged to such guilds as the Stacius Trade Guild and the Collector's Guild. (; )

Following Rom's revelation of the working conditions at Quark's to Julian Bashir in 2372, Bashir suggested that he and the other employees who worked for Quark needed to establish "[s]omething to keep you from being exploited," such as a trade guild. Rom clarified the situation, explaining that, "Ferengi workers don't want to stop the exploitation," and that, in fact, "[w]e want to find a way to become the exploiters." ()

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Economics