Suspension for Non-Payment: Getting the Strategy Right

Suspending construction work can be powerful leverage when payment is not made. It can also create a second dispute if the payment entitlement, notice or scope of suspension is wrong.

For contractors and subcontractors facing non-payment, the immediate commercial question is often whether work can stop. The better question is whether the right to suspend has arisen, how it should be exercised and what should happen next.

We have previously prepared a guide to suspension of work which explains the statutory framework and the basic notice requirements. This article takes the next step: it looks at the practical checks and strategic choices that matter before a contractor or subcontractor suspends performance for non-payment.

Suspension for non-payment starts with the notified sum

The statutory right under section 112 of the Housing Grants, Construction and Regeneration Act 1996 is tied to a failure to pay the notified sum in full by the final date for payment. It does not arise merely because an invoice or application remains disputed.

Suppose a contractor applies for £250,000. If the paying party issues a valid payment notice or pay less notice reducing the notified sum to £150,000 and pays that amount by the final date for payment, the contractor will not ordinarily have a statutory right to suspend simply because it has not been paid what was claimed. The valuation dispute may need to be pursued through negotiation or adjudication instead.

Before any suspension notice is sent, the full payment cycle should therefore be checked: the application, due date, payment notice, any pay less notice, final date for payment and the amount actually paid.

The suspension notice is not an administrative formality

A party intending to rely on section 112 must give the defaulting party at least seven days’ notice (contracts can specify longer periods), stating the ground or grounds for the proposed suspension. A vague warning in ordinary correspondence may not be enough.

A carefully prepared notice should identify:

the parties and the relevant construction contract;
the payment cycle and the basis on which the notified sum was established;
the final date for payment and the amount that remains unpaid;
the statutory and, where relevant, contractual basis of the right to suspend;
the obligations that will be suspended; and
the date on which suspension will begin if payment is not made in full.

The notice should be unambiguous and consistent with the action that will actually be taken. If it says that only specified services will be suspended, withdrawing all labour may create unnecessary risk.

Check service and calculate the notice period carefully

Even a well-drafted notice can fail if it is served incorrectly. Construction contracts often prescribe the permitted method and address for notices, and may contain rules about when service is deemed effective. Those provisions should be checked rather than assuming that an email to the usual project contact is sufficient.

Keep evidence of service and allow the full statutory period before suspending. If there is uncertainty about when the notice was received or deemed served, acting one day too early can turn a strong payment position into an argument about wrongful suspension.

Full or partial suspension?

Section 112 permits the suspension of any or all contractual obligations. A complete suspension may create maximum leverage, but it may also cause greater disruption, increase remobilisation costs and complicate relationships with subcontractors and the supply chain.

A targeted suspension may sometimes be more proportionate and commercially effective—for example, suspending a particular workstream or service while continuing activities needed to protect completed work. The choice should be deliberate, operationally workable and clearly reflected in the notice.

The suspending party should also identify obligations that may need to continue. Site safety, security, protection of the works, insurance requirements, document retention and statutory duties do not necessarily disappear simply because performance has been suspended.

Suspension is not termination

Suspension is a temporary remedy. The statutory right ceases when the relevant amount is paid in full, at which point the suspending party must be ready to recommence performance, subject to the practical consequences of demobilisation and remobilisation.

Termination is different. It depends on separate contractual or common-law rights, different tests and usually its own notice procedure. A right to suspend for non-payment does not automatically confer a right to terminate, and an unjustified attempt to bring the contract to an end can have serious consequences. See our separate guide, Termination: What You Need to Know.

Record the time and cost consequences from day one

The legislation gives the suspending party important protection. The party in default may be liable for a reasonable amount in respect of costs and expenses reasonably incurred because of the suspension, and the statutory provisions also protect the suspending party in relation to contractual time limits affected by the suspension.

Those protections do not remove the need to prove the consequences. Records should capture:

labour and management time associated with demobilisation and remobilisation;
plant, equipment, storage and site-establishment costs;
subcontractor and supplier charges or cancellations;
measures taken to protect the works and maintain safety or security;
programme impact and the effect on critical and follow-on activities; and
the steps taken to mitigate cost and delay.

The same discipline used to support an extension of time or loss and expense claim should be applied to the consequences of suspension. Entitlement may exist, but recovery still depends on evidence and causation.

Plan for payment and for recommencement

A suspension notice creates immediate commercial pressure, but it is not a complete recovery strategy. Before serving it, decide what will happen if the sum remains unpaid. Depending on the circumstances, that may include an adjudication, a claim for contractual or statutory interest, use of other contractual remedies and an assessment of whether the non-payment indicates wider financial distress.

It may be sensible to begin preparing an adjudication while the notice period runs, particularly if the paying party disputes the validity of the application or the amount of the notified sum. The payment analysis, suspension decision and dispute strategy should be developed together rather than as separate exercises.

Recommencement also needs planning. Payment may arrive unexpectedly and the statutory right to suspend will then cease. The suspending party should be able to explain what is reasonably required to remobilise, how quickly work can resume and what effect the interruption has had on the programme.

A practical pre-suspension checklist

Payment entitlement: What is the notified sum, and precisely how was it established?
Timing: Has the final date for payment passed without payment in full?
Notices: Were the application, payment notice and any pay less notice valid and served on time?
Right to suspend: Does the statutory right apply, and does the contract provide any additional rights or requirements?
Drafting: Prepare the right notice ensuring reliance on the relevant contractual/legal basis.
Service: Check the contract requirements.
Scope: Should all obligations be suspended, or would a targeted suspension be more effective?
Continuing duties: Consider if anything should continue, for example safety, security, insurance and protection of the works?
Evidence: How will time, cost, causation and mitigation be recorded?
Next steps: What is the plan if payment is still not made or if it is made immediately?

Key takeaway

Suspension for non-payment can be highly effective, but it should not be treated as a routine response to an unpaid application. The safest approach is to verify the notified sum, comply strictly with the notice and service requirements, choose the scope of suspension deliberately, preserve evidence and plan both the recovery process and the return to work.

If there is uncertainty about the payment mechanism or the right to suspend, resolve it before work stops. A short review at that stage is usually far less costly than defending a wrongful-suspension allegation later.

How CCC can help

Contract & Construction Consultants (CCC) advises contractors and subcontractors on non-payment, disputed valuations and the practical use of suspension. We can review the payment position, assess whether a right to suspend has arisen, prepare or review the suspension notice and help develop the wider payment recovery strategy. We also support clients in interim applications and final accounts, payment disputes and adjudication.

If you are considering suspending work for non-payment, contact our team before taking action.

This article is intended for general information only and does not constitute legal advice. Specific advice should be obtained before acting on any of the issues discussed.

Suspension for Non-Payment: Getting the Strategy Right