Delay is common in construction, but its legal and commercial consequences are rarely simple. Whether it justifies more time, more money, both or neither depends on the contract and the evidence.
An extension of time, often called an EOT, is a contractual mechanism that may move the date for practical completion. It can affect liquidated damages, project programming and responsibility for delay costs. Disciplined contract administration is therefore essential.
Start With the Contract
Every claim should begin with the signed contract, including its schedules, special conditions and amendments. The delay clauses usually identify qualifying events, notice periods, required details and assessment procedures. They may also require updates or evidence of mitigation.
These requirements can be strict. A delay notice may only preserve the right to make a later EOT claim; it may not be the claim itself. The Victorian Government’s contract-management guidance highlights the importance of contractual time bars, written notices and evidence that the event affected the critical path. The actual deadline and content requirements must still be checked against the project’s own contract.
Separate the Cause From the Consequence
A persuasive claim explains both what happened and how it delayed completion. Naming an event is not enough. The claimant should connect the event to particular activities, show when those activities were planned, explain the effect on following work, and calculate the resulting delay.
Some events disrupt work without delaying completion. A late drawing may cause resequencing or extra cost, yet available float may prevent movement in the critical path. Conversely, a short event affecting a critical activity can delay practical completion.
The NSW Government guide to managing extensions of time provides a useful public-sector framework for assessing claimed delays and granting an appropriate extension. In practice, the correct analysis will depend on the contract, the accepted program and reliable project records.
Build the Claim Around Contemporaneous Records
Strong EOT claims are built during the project, not reconstructed later. Useful records include programs, site diaries, instructions, design registers, variation documents, meeting minutes, photographs and delivery records.
The claim should present a clear chronology, identify the relevant clause, show when notice was given and explain the period claimed. Programme analysis should suit the available data and contract. Assumptions and changes to logic should be stated openly.
Consider Mitigation and Concurrent Delay
Many contracts require reasonable steps to avoid or minimise delay. That does not always mean the claimant must accelerate at its own cost. It may involve reallocating labour, resequencing activities, using another work area or seeking instructions promptly. Records should show what options were considered and why a particular response was reasonable.
Concurrent delay can make entitlement more difficult. This issue arises when two delay causes operate over the same period, often with different contractual responsibility. Australian contracts do not all treat concurrency in the same way. The wording of the EOT clause, causation evidence and the timing of each event require careful analysis; a broad statement that delays “overlapped” may not resolve the question.
Do Not Assume Time Automatically Means Money
An entitlement to extra time does not necessarily create an entitlement to delay costs. The contract may allow an EOT for events such as adverse weather but provide no compensation. Other events, including a principal-caused variation or late access, may support both time and cost claims if the contractual conditions are met.
Delay costs also need proof. Site overheads, extended supervision, equipment, insurance and other claimed amounts should be supported by records and calculated under the agreed contractual method. Disruption or acceleration may involve distinct rights, notices and valuation rules.
Assess and Respond Fairly
The party assessing a claim should test contractual compliance, causation, critical-path effect, mitigation and the number of days supported. Any rejection or partial assessment should give clear reasons. Prompt decisions help both sides maintain an accurate completion date and manage the remaining work.
When entitlement is uncertain, or the financial exposure is significant, early advice can clarify the contract before positions harden. Experienced Construction lawyers in Australia can help parties review notice requirements, test programme evidence, prepare or respond to claims and plan a proportionate dispute strategy.
Protect the Project Before Delay Becomes a Dispute
Good EOT management combines timely notices, reliable records and careful legal analysis. Baker Merz Lawyers assists construction participants with contract review, delay claims and disputes across the project lifecycle. Visit the firm’s website to explore how its construction-law team can support a current or emerging delay issue.