A contractor wins an adjudication for $180,000 and is paid. Six weeks later the principal commences a process to recover it, on the basis that the adjudicator got the entitlement question wrong.
The contractor is surprised. They understood the adjudication to have settled the matter. It did not, and it was never going to — because that is not what adjudication is for.
Adjudication is interim by design
The security of payment regimes exist to keep money moving through the construction chain. They deliver a rapid, enforceable determination on a payment claim so that a contractor is not starved of cash while a contractual argument runs.
What they do not do is finally determine the parties’ underlying rights.[2] An adjudication determination decides who holds the money in the meantime. The contractual dispute — whether the variation was properly directed, whether the delay was compensable, whether the work was defective — remains live and can be pursued through the contract’s own machinery.
The mechanics of getting to and through adjudication, including the timeframes in each state and territory, are set out in our guide to security of payment in Australia. This guide picks up where that one ends.
Two consequences worth internalising:
- Winning an adjudication is not the end. Do not spend the money on the assumption that it is settled, particularly on a large determination.
- Losing an adjudication is not the end either. An adverse determination on a genuinely good claim can still be pursued contractually.
The contract’s own dispute ladder
Most Australian construction contracts contain a dispute resolution clause setting out a sequence of steps that must be followed. Under AS 4000 that machinery sits at clause 42, and clause 42.1 requires the contractor to continue performing the work notwithstanding a dispute about payment.[1]
A typical ladder runs:
| Step | What it involves | Typical cost |
|---|---|---|
| 1 · Notice of dispute | A formal written notice within a stated period, in the required form | Nil |
| 2 · Senior representatives | A meeting between people with authority to settle, often within a fixed window | Low |
| 3 · Mediation or expert determination | A structured third-party process | Moderate |
| 4 · Arbitration or litigation | Binding determination | High to very high |
Three practical points about the ladder itself:
- The steps are usually mandatory and sequential. Skipping to the end is generally not available, and attempting it can be procedurally fatal.
- The notice of dispute has a deadline, and it is frequently short. Missing it can be as damaging as missing a variation notice — put it on the one-page contract summary described in our guide to contract administration for civil SMEs.
- You keep working. Suspension outside the statutory rights will usually put you in the wrong.
Negotiation, and why it resolves most things
The senior representatives step is treated as a formality and it should not be. The overwhelming majority of construction disputes settle by negotiation, and the ones that settle early settle cheapest.
What makes the meeting work:
- Send someone who can actually settle. A meeting where both attendees must refer back achieves nothing.
- Arrive with the position documented. A short chronology, the contractual basis, and the quantum with substantiation. The party with the better file usually does better, because the other side can see what a determination would look like.
- Separate the issues. A dispute containing eleven items is usually four real disagreements and seven that can be resolved on the spot.
- Know your walk-away number before you go in.
- Keep it commercial. The relationship usually has value beyond this contract.
Expert determination
An independent expert — typically an engineer, quantity surveyor or construction lawyer — decides the issue. It is common in Australian construction contracts and well suited to technical questions.
| Suits | Does not suit |
|---|---|
| Technical valuation questions — was this rate reasonable, what was the extent of the latent condition | Complex questions of contractual interpretation |
| Disputes where speed matters | Matters requiring extensive discovery or witness evidence |
| Parties who want to preserve the relationship | Situations where an appeal right matters |
The critical question is whether the determination is binding, and how binding. Contracts differ: some make expert determination final and binding; others make it binding only up to a value threshold, above which either party may proceed to arbitration or litigation. Read the clause before you engage, because the answer determines whether this is the end of the road or a staging post.
Mediation
A mediator does not decide anything. They facilitate a negotiated settlement, and the outcome is whatever the parties agree.
For a civil SME mediation is often the best value step on the ladder: it is materially cheaper than arbitration, it is confidential, it preserves the commercial relationship, and a settlement reached in mediation is certain in a way a determination never is. The trade-off is that it can fail — and a failed mediation is cost incurred with nothing resolved.
Go in with a documented position and genuine authority to settle, for the same reasons as the senior representatives meeting.
Arbitration
A private, binding determination by an arbitrator, under the commercial arbitration legislation of the relevant state or territory. Where the contract nominates arbitration, that is generally the route rather than court.
- Binding, with very limited appeal rights. This is the point of it, and it is also the risk.
- Private. Valuable where the dispute is commercially sensitive.
- You can appoint expertise. An arbitrator with construction background will understand a delay analysis in a way a generalist may not.
- Expensive. The parties pay the arbitrator as well as their own legal costs.
- Slower than expected. Complex construction arbitrations run for many months.
For most civil SME disputes arbitration is disproportionate. It becomes rational at high value, or where a point genuinely must be determined.
Litigation
Court proceedings, in the appropriate jurisdiction for the amount. Public, slow, expensive, and with appeal rights.
Two situations where it becomes the realistic route: where the contract does not nominate arbitration, and where you are enforcing an adjudication determination that has not been paid — enforcement is generally a court process.
For smaller amounts, the relevant state tribunal or lower court may offer a proportionate path. Take advice on the right forum before commencing — the wrong jurisdiction wastes months.
Appealing an arbitral award
Contractors considering arbitration often assume that a bad award can be appealed like a court judgment. Under Australia’s domestic arbitration legislation it largely cannot, and understanding why is central to deciding whether to agree to arbitration at all.
Under the Commercial Arbitration Acts, an appeal against an award on a question of law is possible only in limited circumstances — and only where the parties have agreed that such an appeal may be made, and the court grants leave.[3]
Three consequences follow, and each is commercially significant.
The right must be agreed in advance. The parties have to agree that an appeal may be made, and that agreement is generally made before the appeal period ends — in practice, in the arbitration agreement itself.[3] If your contract nominates arbitration and says nothing about appeals, you are likely agreeing to a final determination.
Leave is not automatic even where the right exists. Leave must not be granted unless the court is satisfied that determination of the question of law might result in substantial savings in costs to the parties.[3] That is a real threshold, not a formality.
Only questions of law are appellable at all. An arbitrator who assesses the evidence in a way you disagree with has not made an appellable error. Getting the facts “wrong” is part of what you agree to when you agree to arbitration.
Note also that this appeal mechanism is specific to domestic arbitration under the Australian Commercial Arbitration Acts; there is no equivalent provision in the Model Law that applies to international arbitration.[3] For a civil SME working entirely within Australia, the domestic regime is the relevant one.
The practical takeaway is about contract review rather than dispute strategy. When you read a contract before signing, note whether it nominates arbitration and whether it preserves any appeal right. That belongs on the one-page contract summary described in our guide to contract administration for civil SMEs, alongside the notice periods — because by the time a dispute exists, the choice has already been made for you.
Limitation periods and costs
Two structural constraints sit behind every escalation decision, and both are easy to overlook while attention is on the merits. A third arrives if the other side becomes insolvent, which changes what a determination is worth — see insolvency up the contractual chain.
Limitation periods. Separately from any contractual notice regime, general limitation legislation in each state and territory places an outer time limit on commencing proceedings. A claim can therefore be contractually alive — notice given, entitlement preserved — and still become unenforceable through delay. Contractors who let a dispute sit “until the job is finished” sometimes discover the delay itself has become the problem. Where a matter has been unresolved for a long period, that is a reason to take advice sooner rather than later.
Costs. Who pays the cost of a formal process varies by forum, and it changes the economics of escalation materially.
| Forum | Typical cost position |
|---|---|
| Negotiation | Each party bears its own. Effectively free beyond your own time |
| Mediation | Mediator’s fee usually shared; each party bears its own costs |
| Expert determination | Expert’s fee usually shared; cost recovery depends on what the contract says |
| Arbitration | Parties pay the arbitrator and their own legal costs. Costs may follow the event, but recovery is rarely complete |
| Litigation | Costs may be awarded to the successful party, but on a scale that typically recovers only part of what was actually spent |
The point that matters for a small business: winning does not usually make you whole. A successful arbitration or court outcome typically leaves a meaningful shortfall between costs incurred and costs recovered. Any proportionality assessment — see §10 — has to be run on net recovery, not on the amount claimed.
Enforcing an adjudication determination
A determination in your favour is not money in your account. Where the respondent simply does not pay, enforcement is a separate step — and it is generally a court process rather than anything the security of payment regime does for you automatically.
The broad pattern across the Australian regimes is that an adjudicated amount can be converted into a judgment debt, which is then enforceable like any other judgment. The mechanics, the forms and the court differ by jurisdiction, and the state-by-state detail sits in our guide to security of payment in Australia.
Three practical points for a civil SME.
- Enforcement costs money and takes time. Budget for it before celebrating a determination, particularly a large one against a respondent whose payment behaviour was the reason you adjudicated.
- A determination against a party that cannot pay is worth very little. The counterparty’s solvency is worth assessing before you spend on adjudication, not after — which is one more reason the financial checks in our guide to demonstrating financial capacity matter in both directions.
- Move promptly. Enforcement steps have their own timeframes, and delay rarely improves recovery prospects.
When the other side attacks the determination
The other route a respondent may take is to challenge the determination itself rather than the underlying entitlement.
Because adjudication is a statutory process conducted rapidly, challenges are generally directed at whether the adjudicator had power to decide as they did — jurisdictional questions — rather than at whether the decision was commercially correct. An adjudicator getting the merits wrong is, broadly, part of the bargain in a fast interim process; an adjudicator deciding something they had no power to decide is a different matter.
What that means for you, without straying into advice:
- Procedural correctness protects your determination. A payment claim served correctly, on time, in the required form, on the right entity, is much harder to attack than one with a procedural weakness — however good the underlying claim.
- Do not treat a determination as final for accounting purposes until the challenge window has passed and payment is received.
- Get advice quickly if a challenge is foreshadowed. These processes move faster than ordinary litigation.
The practical lesson reinforces the theme of this whole cluster: the quality of your process is what makes an outcome durable. A well-run claim, served properly and substantiated from contemporaneous records, is both more likely to succeed and harder to unwind.
The proportionality test
This is the decision that actually matters, and it is commercial rather than legal.
Before escalating, work out honestly:
- The amount genuinely in dispute, after removing the parts you would concede.
- The cost of the next step — your legal costs, the third party’s fees, and your own people’s time.
- Your realistic prospects, assessed on the documents you actually hold rather than on what you remember.
- The recovery risk. A determination against a party that cannot pay is worth little.
- The relationship cost. On a repeat client, this is a real number.
- The opportunity cost. Management attention consumed by a dispute is attention not spent winning work.
The uncomfortable arithmetic: on a $60,000 dispute, a step costing $40,000 with a 60% chance of success is not a good commercial decision, however strongly you feel about the merits. Many contractors escalate on principle and regret it.
Take advice early rather than late. The cheapest legal advice is the advice that tells you which notice to send this week; the most expensive is advice sought after a step has been missed.
What decides the outcome, whichever route
Every route above resolves on the same material, and none of it can be created after the dispute starts.
- Contemporaneous records — site diaries, production records, photographs. See contract administration for civil SMEs.
- Notices given on time, in the required form and to the required address. Where notice was a condition precedent, this is often decisive on its own.
- Substantiation — build-ups, dockets, invoices, timesheets.
- A maintained programme with actual dates, without which critical delay cannot be demonstrated — see extension of time and delay cost claims.
- Correspondence that reads well to a stranger — factual, neutral, and free of statements against your own interest.
- Claims made event by event rather than aggregated at the end, since global claims generally fail.
The pattern across the post-award cluster in this library holds here too: disputes are won and lost during delivery, and resolved afterwards.
Avoiding the ladder altogether
- Read the contract before signing, particularly the notice regime and the dispute clause.
- Notify events at the time, using the discipline in our guides to variations and latent conditions.
- Claim as you go. Small, well-evidenced claims resolved monthly rarely become disputes.
- Use security of payment early rather than as a last resort. It is ordinary practice, not escalation.
- Raise problems while they are small. Almost every large construction dispute began as something that could have been a conversation.
- Keep the tone consistent whether things are going well or badly.
Preparing a matter for a formal process
Whichever forum a dispute reaches, the preparation is largely the same — and the contractor who does it early negotiates better, because the other side can see what a determination would look like.
- Build a chronology. Dated, factual, sourced to documents. Every event, notice, direction and response in order. This is the single most useful document in any dispute, and it usually reveals gaps while there is still time to address them.
- Identify the contractual basis for each item. Which clause, what entitlement, and whether notice was given within the required period. An item with no clause and no notice is an item to concede early rather than defend late.
- Separate the issues and value each one. A dispute described as “$180,000 owing” is far weaker than eleven items individually valued and substantiated. It also lets you concede the weak ones without conceding the strong.
- Assemble the substantiation. Build-ups, dockets, timesheets, invoices, site diaries, photographs, the programme and its revisions.
- Test your own case honestly. Ask someone who was not involved to argue the other side. The weaknesses they find are the ones the other side will find.
- Assess recovery. Can the counterparty pay? A determination against an entity that cannot is worth very little — see demonstrating financial capacity, which cuts both ways.
- Set a walk-away number before you engage. Decided in advance and in the cold, not in the room.
Two observations about how this preparation behaves in practice.
It very often resolves the dispute without a formal process. A well-built chronology with clause references and substantiation, sent to the other side, frequently produces a settlement — because it shows them what a determination would cost them. Most disputes settle, and the ones that settle early settle cheapest.
It exposes whether you actually have a case. Contractors are frequently certain they are owed money and then discover, on assembling the chronology, that a notice was never given or a direction never confirmed. Better to find that out before spending on a process than during one — and it is a strong argument for running the administration properly on every job, not just the ones that go wrong.
If preparing this is beyond your available capacity while running the business, that is a legitimate reason to get help — and it is exactly the kind of work our post-award and mobilisation support exists to do, ideally well before a matter reaches a dispute clause.
Choosing between the forums
Where the contract leaves a choice, or where the parties can agree one, the forums differ on axes that matter differently depending on the dispute.
| Speed | Cost | Binding | Private | Best for | |
|---|---|---|---|---|---|
| Negotiation | Fastest | Lowest | Only if documented | Yes | Almost everything, first |
| Mediation | Fast | Low–moderate | Only the settlement | Yes | Multi-issue disputes; preserving the relationship |
| Expert determination | Moderate | Moderate | Depends on the clause | Yes | Technical valuation questions |
| Arbitration | Slow | High | Yes, with very limited appeal | Yes | High value; where privacy matters |
| Litigation | Slowest | High | Yes, with appeal rights | No | Enforcement; where no arbitration clause exists |
Three selection principles that hold for a civil SME.
Match the forum to the nature of the disagreement. A dispute about whether a rate was reasonable, or how much rock was actually encountered, is a technical valuation question — expert determination handles it well and cheaply. A dispute about what a clause means is a legal question, and an expert may not be the right decision-maker.
Weigh certainty against finality. Mediation produces an outcome you agreed to, which is certain. Arbitration and litigation produce an outcome imposed on you, which may be better or worse than you expected. For a business that cannot absorb a bad result, a negotiated settlement at a discount is often the better commercial choice than a determination with upside.
Privacy is worth more than contractors think. Litigation is public. A published judgment describing a contractor’s performance on a project is discoverable by future clients, and by assessors — see demonstrating financial capacity on how disputes affect financial standing, and referees and past project experience on how they affect your record.
Where contractors go wrong
| Mistake | Consequence |
|---|---|
| Treating an adjudication win as final | Spending money that may have to be returned |
| Missing the notice of dispute deadline | Frequently short, and missing it can be procedurally fatal |
| Skipping a mandatory step in the ladder | The process can be sent back, or the step enforced, at your cost |
| Suspending work over a payment dispute | Outside the statutory rights this generally puts you in the wrong — under AS 4000, clause 42.1 requires performance to continue[1] |
| Escalating on principle | A $40,000 step on a $60,000 dispute rarely makes commercial sense, however strongly you feel |
| Sending someone who cannot settle | Wastes the cheapest step on the ladder |
| Aggregating everything into one global claim | A single weak item undermines the whole. Claim and value event by event |
| Letting correspondence turn adversarial | Reads badly to every subsequent decision-maker, and rarely improves the outcome |
| Taking advice after a deadline rather than before | The most expensive version of legal advice there is |
| Assuming a bad arbitral award can be appealed | It generally cannot — see §10 |
The common thread is that most of these are decided before the dispute exists — in the contract you signed, the notices you did or did not give, and the records you kept while the work was running. By the time a matter reaches a dispute clause, the range of available outcomes has already been set.
Checklist
- What does your dispute clause require, and in what sequence?
- What is the deadline for a notice of dispute, and is it diarised?
- Is expert determination binding under your contract, and up to what value?
- Does the contract nominate arbitration or leave you to the courts?
- Have you quantified the amount genuinely in dispute?
- Have you costed the next step, including your own people’s time?
- Have you assessed prospects on the documents you actually hold?
- Can the other side pay?
- Have you taken advice before, not after, the next deadline?
- If you hold a determination — has it been converted to a judgment, and has the challenge window passed?
- Was the payment claim served correctly, on time, in the required form, on the right entity?
- Have you assessed whether the other side can actually pay?
- Does your contract nominate arbitration, and does it preserve any right of appeal?
- Have you checked the limitation position on an old matter?
- Have you run the proportionality test on net recovery after costs?
- Have you built a dated chronology with clause references before engaging?
The short version
- Adjudication decides who holds the money in the meantime, not who was right. Winning one does not close the matter.
- The contract’s dispute steps are usually mandatory and sequential, with a short notice deadline. Diarise it.
- You keep working. Suspension outside the statutory rights puts you in the wrong.
- Most disputes settle. Send someone who can settle, with the position documented.
- Check whether expert determination is binding under your contract, and up to what value.
- Escalate on proportionality, not principle. A $40,000 step on a $60,000 dispute rarely makes commercial sense.
References
This guide is general information for Australian civil construction businesses and is not legal advice. Dispute resolution procedures, notice periods, binding effect and available forums are set by the executed contract and by the legislation of the relevant jurisdiction, and differ significantly. All examples are illustrative. Obtain legal advice on any dispute of significance, and do so before a contractual deadline passes.
- AS 4000-1997 General conditions of contract, clause 42 — dispute resolution, and clause 42.1 requiring the contractor to continue performing the work under the contract notwithstanding the existence of a dispute about payment, as described in Turtons Lawyers, How to claim a variation under AS 4000. Sourced in full in our guide to variations in civil construction contracts. ↩ ↩
- Commercial Arbitration Acts of the Australian states and territories, section 34A, as described in Aptum Legal — Can You Appeal an Arbitration Decision in Australia?; MolinoCahill — A Right to Appeal an Arbitral Award?; Global Arbitration Review — The Guide to Construction Arbitration: Construction arbitration in Australia and The Asia-Pacific Arbitration Review: Australia; Supreme Court of Victoria — Practice Note SC CC 3: Commercial Arbitration Business. An appeal of an award on a question of law being possible only in limited circumstances, and only with the leave of the court or where the parties agree to the appeal before the end of the appeal period; section 34A permitting an appeal on a question of law where the parties agree that such an appeal may be made and the court grants leave; the requirement that leave not be granted unless the court is satisfied that determination of the question of law by the court might result in substantial savings in costs to the parties; and the position that this appeal mechanism is specific to domestic arbitration under the Australian Commercial Arbitration Acts, with no equivalent provision in the Model Law applying to international arbitration. ↩ ↩ ↩ ↩
- Security of payment legislation in each Australian state and territory, and the adjudication process established under it, providing an interim statutory remedy for payment claims on statutory timeframes. The regime’s operation, including payment claims, payment schedules, the reasons requirement and adjudication windows by jurisdiction, is set out in full in our guide to security of payment in Australia. ↩