UK Supreme Court reverses Court of Appeal on JCT contract termination rights, limiting contractors' ability to exit for trivial late payment

The UK Supreme Court has reversed a Court of Appeal decision concerning termination rights under JCT (Joint Contracts Tribunal) construction contracts — the standard form agreements governing the vast majority of UK building projects. The case centred on whether a contractor could terminate a JCT contract for repeated but trivial instances of late payment by an employer (the party commissioning the construction work). The Court of Appeal had previously found in favour of contractors, granting them relatively generous termination rights where employers engaged in a pattern of late payment, even if individual instances were minor. The Supreme Court has now reversed that ruling, finding in favour of employers — the companies and developers commissioning construction — and restoring a narrower reading of the contractual termination mechanism. The decision will directly affect how termination notices are drafted and contested under JCT contracts across the UK construction industry. Employers can now take some comfort that contractors cannot exploit minor payment delays as a basis for exiting a contract — a tactic that could be commercially attractive in a rising-cost environment where contractors seek to escape fixed-price obligations. However, the Supreme Court has also, in its judgment, invited the JCT committee — the industry body responsible for drafting and updating standard form contracts — to consider whether amendments to the standard form are warranted to prevent employers from deliberately engineering late payment to gain tactical advantage. Whether the committee acts on this invitation will shape the next cycle of JCT contract drafting and the advisory work it generates.

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