Subcontractor Commercial Management: Protecting Entitlement Down the Supply Chain

Subcontractors operate in one of the most commercially exposed positions in the construction supply chain. They carry significant risk — programme, design, interface, ground conditions — but often have limited commercial resource to manage that risk. The result is that entitlement is routinely lost, not because it does not exist, but because it is not identified, notified or substantiated correctly.

The first challenge for subcontractors is the contract itself. Many subcontract forms are back-to-back with the main contract — meaning the subcontractor's rights and obligations mirror those of the main contractor under the head contract. This can be advantageous where the head contract is NEC, but it also means that the subcontractor is bound by the same notification requirements and time bars that apply to the main contractor. Failing to understand the contract is the first step towards losing entitlement.

Notification is the critical discipline. Whether the subcontract is NEC, JCT or bespoke, there will be provisions requiring the subcontractor to notify the main contractor of events that affect time or cost. These notifications must be given in the correct form, within the correct timeframe, and to the correct person. A notification given late, in the wrong format or to the wrong individual may be treated as invalid — and the entitlement lost.

Substantiation is the second discipline. A notification preserves the right to claim; it does not establish the quantum. The subcontractor must be able to demonstrate the actual impact of the event on their programme and costs. This requires good record-keeping throughout the project — daily records, labour allocation sheets, plant records, correspondence — not a retrospective reconstruction at final account stage.

Where the main contractor disputes or ignores the subcontractor's entitlement, the subcontractor needs to understand their options. Adjudication is available under most construction contracts and can be a fast and cost-effective route to recovery. The key is to have the commercial and contractual groundwork in place — a well-notified, well-substantiated claim is far easier to pursue than one that has to be reconstructed from incomplete records.