Challenging liquidated damages after contract

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Legal and contractual solutions · Liquidated damages

May a contractor challenge a liquidated-damages provision after entering into the contract?

Timing, burden of proof and the modern penalty test

Yes. Agreement to the clause does not prevent a later contention that the provision is penal or does not apply on its proper construction. The challenge must identify a recognised legal or contractual basis and be supported by evidence.

Quick answer

Yes. A contractor may challenge the clause when liability is asserted, but must establish the basis on which it is unenforceable or inapplicable

A challenge may concern construction, defective contractual machinery, the penalty rule or the calculation itself. Under the penalty rule, first identify a secondary obligation arising on breach. The question is then whether the stipulated detriment is out of all proportion to the employer's legitimate interest when the contract was made. The contractor cannot shift the entire evidential task to the employer merely by alleging that the rate exceeds actual loss.

IssuePosition
Contract signedDoes not bar a later legal challenge
Construction challengeClause may not apply to the breach or section claimed
Penalty challengeModern legitimate-interest and proportionality test
BurdenChallenging party must establish the allegation
Actual lossRelevant evidence, not the exclusive legal test

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