Restrictive Covenant

A restrictive covenant is a contractual clause that limits what one party may do during or after a relationship — most commonly an employment, partnership, or sale-of-business agreement. In the professional context, the term usually refers to post-employment restraints such as non-compete, non-solicitation (of clients or employees), non-dealing, and confidentiality clauses. They are also widely used in M&A deals, where sellers agree not to compete with the business they have just sold.

Enforceability varies sharply by jurisdiction. Under English common law, restrictive covenants are prima facie void as restraints of trade and will only be upheld where the employer shows a legitimate business interest (such as trade secrets, client connections, or stability of workforce) and the restraint is no wider than reasonable in scope, duration, and geography. The leading authority remains Nordenfelt v Maxim Nordenfelt Guns and Ammunition Co (House of Lords, 1894), refined in cases such as Tillman v Egon Zehnder (UK Supreme Court, 2019), which clarified the courts' approach to severance ("blue-pencilling") of overbroad wording.

In the United States, rules are state-specific. California, Minnesota, North Dakota, and Oklahoma broadly prohibit employee non-competes. In April 2024 the US Federal Trade Commission issued a final rule purporting to ban most non-competes nationwide, though the rule was set aside by the US District Court for the Northern District of Texas in Ryan LLC v FTC (August 2024) and remains under appeal. The EU has no single regime, but member states generally require that post-termination non-competes be limited in time (often 6–24 months) and, in countries such as Germany and France, that the employer pay compensation (Karenzentschädigung; contrepartie financière) during the restricted period.

For researchers, restrictive covenants sit at the intersection of labour mobility, competition policy, and human-capital regulation — a growing area of comparative policy debate.