How to Review a Construction Subcontract Before You Sign: A Practitioner's Checklist

A construction subcontract is not a formality to be filed once the price is agreed. It is the instrument that allocates every risk on the package, and by the time a dispute arises it is far too late to renegotiate the terms that will decide it. The only leverage a subcontractor ever has is before signature, and that leverage is routinely wasted. The commercial team checks the number, confirms the scope, and signs, leaving the risk-allocation clauses - the parts that actually determine profitability - unread. A disciplined pre-signature review, worked through in a deliberate order, is the cheapest risk management a subcontractor will ever buy.

Start With Risk Allocation, Not the Price

The instinct is to open a subcontract at the price and the scope. The practitioner opens it at the risk allocation, because the price is only meaningful once you understand what you are being paid to carry. The first question is not how much but for what and at whose risk. Look for the clauses that transfer risk down to you: design responsibility you did not price for, responsibility for the accuracy of information you did not produce, obligations to satisfy yourself as to site conditions, and blanket assumptions of risks that a main contractor would ordinarily retain.

The most dangerous clauses are the ones that make you responsible for things outside your control. A subcontractor that accepts responsibility for the sufficiency of the main contractor's design, or for ground conditions it had no opportunity to investigate, has taken on open-ended exposure for a fixed price. Identify every risk-transfer clause first, price the ones you are willing to keep, and push back hard on the ones you are not. Everything else in the review is detail by comparison.

Payment Terms and the Cash-Flow Engine

A subcontract lives or dies on cash flow, so the payment clause deserves forensic attention. Establish the payment cycle: when you apply, when the work is valued, when the payment becomes due, and the final date for payment. A long cycle - application to payment stretching across sixty or ninety days - is a financing cost you are lending to the main contractor, and it must be priced in or negotiated down.

Scrutinise any clause that makes your payment conditional on the main contractor being paid by the employer. Pay-when-paid and pay-if-paid clauses transfer the employer's insolvency risk onto you, and their enforceability varies sharply by jurisdiction. Look also at the notice requirements around payment - the payment application format, the deadlines, and any provision that lets the main contractor withhold or set off. A withholding regime that lets the contractor deduct on short notice, for loosely defined reasons, can strangle cash flow even on a profitable job. The monthly valuation discipline that keeps this cycle healthy is worth mastering in its own right, as we set out in Interim Payment Certificates Explained.

Liability Caps, Indemnities and Insurance

Uncapped liability is where an ordinary job becomes a business-ending one. Search the subcontract for a limit on your total liability, and if there is none, that is a negotiation point, not an afterthought. A well-drafted cap limits aggregate liability to a defined figure - often a percentage of the subcontract value or the value itself - and carves the truly catastrophic exposures into their own regime rather than leaving everything open-ended.

Read the indemnities with equal care, because an indemnity can reach far beyond ordinary contractual damages and can survive the cap if it is not properly integrated with it. An indemnity that requires you to hold the main contractor harmless against broad categories of loss, without a cap and without a fault threshold, is a blank cheque. Cross-check the indemnities against your insurance: an obligation your policy does not respond to is an uninsured liability you are carrying personally. The three - cap, indemnity and insurance - must be read together, because a gap between them is where the real exposure hides.

Liquidated Damages and Matching Extension of Time

Liquidated damages for delay are only half of a fair bargain. The other half is a matching right to an extension of time. The single most important test on the delay regime is whether every event that is genuinely the main contractor's or employer's responsibility gives you a right to more time. If the LDs are steep but the extension-of-time grounds are narrow, you are carrying delay risk you cannot control and cannot escape.

Check the LD rate against the value of the package and confirm whether total LD exposure is capped. Then trace the extension-of-time machinery: the grounds, the notice deadlines, and whether they are conditions precedent. A delay caused by the main contractor that does not appear in your list of extension grounds is a delay you will pay for through LDs even though it was not your fault. The mismatch between tight LDs and narrow extension grounds is one of the most common ways a subcontract is quietly stacked against the subcontractor.

Termination, Suspension and Set-Off

Termination clauses tell you how the relationship can end and on what terms, and they are almost always drafted in the main contractor's favour. Look first at termination for the main contractor's convenience: can it terminate at will, and if so, what are you paid - your costs and a fair margin on work done, or something far less that leaves you out of pocket for demobilisation and committed spend. Then look at termination for default: how quickly can the main contractor call a default, what cure period do you get, and what triggers count. A hair-trigger default clause with no meaningful cure period is a weapon that can be used to squeeze you commercially.

Look also at suspension and at the main contractor's set-off rights. A broad set-off clause that lets the main contractor deduct disputed sums, or sums arising under other contracts between you, can be used to withhold money that is properly due. These provisions are among the recurring hazards in dictated subcontracts, and we catalogue the wider pattern in Red Flags in a Subcontract Handed Down by the Main Contractor.

Dispute Resolution and Flow-Down

Two structural clauses close out the review, and both are easy to skim and expensive to ignore. The first is dispute resolution: identify the governing law, the forum - courts or arbitration, and where - and any staged process such as adjudication or a dispute board that must be followed first. A dispute clause that forces you into a distant, expensive forum for every disagreement changes the economics of enforcing your rights, and a smaller subcontractor should weigh that carefully.

The second is flow-down, or incorporation of the main contract. Many subcontracts incorporate the terms of the head contract by reference, so that obligations you have never read become binding on you. The critical task is to obtain and read the main contract terms that are flowed down, because obligations drafted for the relationship between the employer and the main contractor can sit awkwardly, or dangerously, when applied to you. Pay particular attention to whether the flow-down passes down risk without passing down the corresponding rights - for instance, imposing the main contract's obligations while stripping out the payment and extension entitlements that balanced them. Unbalanced flow-down is where a subcontract can contain risks you never even saw. This is exactly the kind of structural review that CALIM's prevention services are built to deliver before signature, while the terms can still be changed.

Frequently Asked Questions

What should I review first in a subcontract?

Start with the risk allocation, not the price. The price is only meaningful once you understand what you are being paid to carry, so identify every clause that transfers risk down to you - design responsibility, responsibility for information you did not produce, assumptions about site conditions, and blanket risk assumptions a main contractor would normally retain. Price the risks you are willing to keep and push back on the ones you are not. Once the risk allocation is clear, the payment terms, liability caps, delay regime, termination and flow-down each follow in a logical order, but risk allocation frames everything else.

Are pay-when-paid clauses enforceable in a subcontract?

It depends heavily on the jurisdiction. Some legal systems restrict or prohibit conditional payment clauses, particularly pay-if-paid, on the basis that they push the employer's insolvency risk unfairly onto the subcontractor, while other jurisdictions, including parts of the GCC, generally enforce them. Because the answer turns on the governing law of the subcontract, you cannot assume a pay-when-paid clause is either safe or void without checking. Where such a clause is present, negotiate protections such as a fixed longstop date for payment and a right to be paid the undisputed portion regardless of the upstream position.

How do I check if liability is properly capped?

Search for a clause limiting your total or aggregate liability, and if there is none, treat that as a negotiation point rather than an oversight. A sound cap fixes aggregate liability at a defined figure, often a percentage of the subcontract value or the value itself, and handles catastrophic exposures in a separate, considered regime. Then read the indemnities alongside the cap, because a broad indemnity can reach beyond ordinary damages and may survive the cap if it is not integrated with it. Finally, cross-check both against your insurance, since any liability your policy does not respond to is one you carry personally.

What is the risk if extension of time does not match the liquidated damages?

It means you can be charged liquidated damages for delay you did not cause and cannot avoid. Liquidated damages are only a fair bargain if every event that is genuinely the main contractor's or employer's responsibility gives you a matching right to an extension of time. If the LDs are steep but the extension grounds are narrow, a delay caused upstream that is not listed as an extension ground becomes a delay you pay for through LDs. Trace the extension machinery, confirm the grounds cover the delays you might realistically face, and check the notice deadlines, since a missed notice can forfeit the time entitlement.

Why does flow-down of the main contract matter?

Because it can bind you to obligations you have never read. Many subcontracts incorporate the head contract by reference, so terms drafted for the relationship between the employer and the main contractor become binding on you. The danger is unbalanced flow-down that passes down risk without passing down the corresponding rights - imposing the main contract's obligations while stripping out the payment and extension entitlements that balanced them. Always obtain and read the flowed-down terms before signing, and check specifically whether the obligations imposed on you are matched by the rights you would need to discharge them fairly.

The hour before signature is the only hour in which the terms are still negotiable, so spend it on the clauses that decide the outcome, not just the number at the front.

Note: This article provides general information on reviewing construction subcontracts and is not legal advice. The enforceability and effect of the clauses discussed, including conditional payment, liability caps, liquidated damages and flow-down provisions, depend on the specific wording of the subcontract and the governing law, which vary between jurisdictions. Subcontractors should obtain advice tailored to their particular subcontract before signing.