Contractors and head contractors often ask this when a project is late and the principal starts claiming liquidated damages. If the principal cannot prove a dollar-for-dollar loss, why should the contractor pay a fixed daily rate?
Generally, the principal does not need to prove its actual loss first. Liquidated damages (LDs) are a pre-agreed amount payable for a breach of contract. Most commonly, it arises from a failure to achieve practical completion by the contractual date. The clause avoids the expensive, uncertain process of proving actual loss after delay has occurred.
That does not mean liquidated damages arise automatically whenever a project finishes late. Many contracts impose procedural or substantive preconditions before a principal can levy LDs, including requirements to issue notices, obtain certifications, assess extension of time claims, or otherwise comply with the contractual procedures governing delay. Even where actual loss does not need to be proven, the principal still needs to comply with the contract.
Liquidated damages matter because they give both sides certainty. The principal gets a predictable remedy without having to prove the value of its loss after the event, and the contractor understands its exposure if practical completion slips. If the contract says delay costs $10,000 per day, the principal will usually rely on that bargain rather than build a general damages claim.
Why the principal does not need to prove loss
Instead of leaving the argument until completion, the parties agree at the outset what delay will cost. A principal does not need experts to unpack every consequence of late completion, and a contractor does not face an open-ended damages claim that no one properly priced at tender.
That is why the argument, “but the principal has not really lost anything,” often fails once the contract is signed. A contractor may say the building is already being used, the principal’s commercial position has changed, or the actual loss is lower than the LD rate. Those arguments may feel persuasive, but they do not usually answer a properly drafted LD clause.
If the contract requires the contractor to pay the agreed rate for each day after the date for practical completion until practical completion is achieved, the principal will generally be entitled to recover that amount without proving what it actually lost on each of those days.
When the clause may fail
Not every LD clause is untouchable. A clause may be unenforceable if a court finds it is a penalty rather than a genuine pre-estimate of loss.
However, courts apply the test by reference to the circumstances that existed when the parties entered into the contract. The question is not whether the amount appears excessive with the benefit of hindsight, but whether the figure was extravagant or unconscionable when the parties agreed it. That is a high bar, which makes liquidated damages difficult to defeat after the event.
Contractors should also be aware that the penalty argument is only one way an LD claim may be challenged. Another area of dispute arises where the principal contributes to delay, but the contract does not provide an effective mechanism for extending time in those circumstances. In some cases, contractors argue that time has become ‘at large’, meaning the obligation shifts from completing by a fixed date to completing within a reasonable time. If successful, that argument can prevent the principal from recovering liquidated damages.
These disputes are highly dependent on the wording of the contract and the operation of the extension of time regime. For that reason, contractors should be cautious about assuming that an unenforceable penalty argument is their only defence to an LD claim.
6 ways to manage liquidated damages risk
Contractors working under Australian Standard contracts, GC21, NEC, or heavily amended principal-drafted forms should pay particular attention to how each contract defines practical completion, extension of time entitlements, and the principal’s right to levy liquidated damages. Small drafting differences can have significant consequences once delay occurs.
Understand how the LD rate was calculated
Before agreeing to an LD regime, ask how the rate was calculated. If the rate appears arbitrary or disconnected from any likely delay loss, raise the issue during negotiations. Although courts are generally reluctant to interfere with agreed LD rates, understanding the commercial basis for the figure may help identify whether the allocation of risk is reasonable.
Negotiate a cap on LDs
Where possible, negotiate a cap on LDs. A cap gives the contractor greater certainty about its maximum exposure and reduces the risk that a prolonged delay will result in a disproportionate liability.
Consider whether LDs should be the sole remedy for delay
Contractors should consider whether the contract should make LDs the principal’s exclusive remedy for delay. Without a sole remedy provision, disputes can arise about whether the principal may recover LDs for some delay-related losses while also pursuing general damages for losses said to fall outside the LD regime.
Carefully review the practical completion requirements
Many LD disputes arise not because the physical works remain incomplete, but because the contractor has not satisfied every requirement for practical completion. Keep practical completion criteria objective, clear, and, as far as possible, within your control. Where practical completion depends on documents, approvals, warranties, manuals, or testing records, ensure those obligations have been properly flowed down to the relevant subcontractors and suppliers.
Make sure the completion date is clear
The date for practical completion should be easy to identify and measure. Fixed dates generally create greater certainty than formulas built around uncertain triggers, such as “100 days from commencement” or “48 weeks from approvals”. If the parties cannot readily determine when time started, a delay dispute becomes far more likely.
Protect your position through the EOT regime
An extension of time (EOT) regime is often the contractor’s most important protection against LDs. Review the events that entitle the contractor to additional time and ensure that project personnel understand the notice and claim requirements. Even where the cause of delay is obvious, contractors should still comply with the contractual procedures. Failure to do so may leave the contractor exposed to LDs that might otherwise have been avoided.
Final word
So, if a principal says you owe liquidated damages, do they need to prove their loss first? Usually, no. If the liquidated damages clause is enforceable and the principal has complied with the contract, it can generally recover liquidated damages without proving its actual loss. The parties have already agreed what delay will cost and who will bear that risk.
For subcontractors and head contractors, the better question is not whether the principal can prove its loss later, but whether you negotiated a sensible clause, ensured the LD rate and completion requirements were clear, included effective mechanisms for dealing with delay, and preserved your time rights throughout the project.
If you’re facing a liquidated damages claim, or want a second opinion on your LD clause before you sign, get in touch.
