Economic duress occurs where one party uses illegitimate economic pressure to force another into a contract or transaction against their free will. The pressure must go beyond ordinary commercial negotiation and leave the claimant with no practical alternative. It is mainly associated with contract law but can overlap with tort-related claims involving coercive conduct and financial loss.
Economic duress commonly arises in commercial settings where a stronger party threatens unlawful action unless the other party agrees to new terms. For example, a contractor may refuse to complete work unless paid more money despite an existing agreement. In The Universe Sentinel (1983), the House of Lords explained that the pressure must be illegitimate and must significantly influence the claimant’s decision. Courts look at factors such as whether the claimant protested, whether they had realistic alternatives, and whether they acted quickly to avoid the agreement once the pressure ended. Hard bargaining or aggressive negotiation is usually lawful, but threats involving unlawful conduct or bad faith can amount to economic duress. The doctrine protects genuine commercial consent by ensuring agreements are not secured through coercion disguised as negotiation.
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