Group boycott

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Competition law

Basic concepts
History of competition law Monopolization Coercive monopoly Natural monopoly Barriers to entry Market power SSNIP test Relevant market Merger control
Anti-competitive practices
Collusion Formation of cartels Price fixing Product bundling and tying Refusal to deal Group boycott Exclusive dealing Bid rigging Dividing territories Conscious parallelism Predatory pricing Misuse of patents and copyrights
Laws and doctrines
United States Sherman Antitrust Act Clayton Antitrust Act Robinson-Patman Act Federal Trade Commission Act Merger guidelines Essential facilities doctrine Noerr-Pennington doctrine Rule of reason Europe European Community competition law Irish Competition Law Competition Act 1998 (U.K.) Australia Trade Practices Act 1974
Enforcement authorities and organizations
International Competition Network List of competition regulators
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In competition law, a group boycott is a type of secondary boycott in which two or more competitors in a relevant market refuse to do business with a firm unless the firm agrees to cease doing business with an actual or potential competitor of the firms conducting the boycott. It is a form of refusal to deal, and can be a method of shutting a competitor out of a market, or preventing entry of a new firm into a market.

In the United States, such conduct can be held to violate the Sherman Antitrust Act. Depending on the nature of the boycott, the courts may either apply the rule of reason, or hold that the boycott is illegal per se. It may also be considered a form of civil conspiracy.