Free rider

n. worker who does not belong to a professional union but enjoys the benefits of union activities; person who acquires something without effort or at no cost (Slang)

Free rider may refer to the following:the free rider problem in economics and collective bargaininga stowawaySee also Conductor (transportation).
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In economics, collective bargaining, psychology and political science, free riders are actors who consume more than their fair share of a resource, or shoulder less than a fair share of the costs of its production. The free rider problem is the question of how to prevent free riding from taking place, or at least limit its negative effects.
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A follower who avoids the cost and expense of finding the best course of action and by simply mimicking the behavior of a leader who made these investments.

A person who chooses to receive the benefits of a "public good " or a "positive externality " without contributing to paying the costs of producing those benefits.
[See also: public goods , externality ]

In agricultural policy, the term generally refers to a firm or person who benefits from a collectively funded activity (such as a generic advertising and promotion, or check-off, program) without contributing to its costs.