NEC4 Early Warning

The NEC4 Early Warning clause requires either the Contractor or the Project Manager to notify the other as soon as they become aware of any matter that could increase the total of the Prices, delay Completion, delay meeting a Key Date, or impair the performance of the Works in use. The notification goes onto the Early Warning Register, and a joint meeting must be held within two weeks to discuss mitigation options. The mechanism is distinct from the compensation event process: an early warning is about a potential issue; a compensation event is a specific contractual entitlement once an event has occurred.

The commercial significance of the Early Warning is that a Contractor who fails to raise one — when they should have done — can have the assessment of a subsequent compensation event reduced on the basis that earlier notification would have allowed the impact to be mitigated. This creates a strong incentive to raise warnings promptly, even where the event may turn out to be immaterial. The Project Manager has the same obligation in reverse.

In practice, the Early Warning Register is one of the best live indicators of programme health on an NEC4 contract. A Register with regular entries and active mitigation discussion suggests a well-functioning contract relationship. A Register that is empty, stale, or populated only when a problem is already unavoidable is usually a signal of broken trust or weak contract discipline — and a predictor of late-stage dispute. Project controls teams should be tracking Early Warnings as a leading indicator alongside schedule and cost metrics.