A disruption claim recovers the extra cost of work that took more labour, plant or supervision than planned because the employer or its consultants interfered with the contractor’s normal working methods. The Society of Construction Law’s Delay and Disruption Protocol, second edition, February 2017, describes disruption as a matter of productivity, irrespective of whether the affected activities are on the critical path. A delay claim, by contrast, concerns time and the completion date.
- Disruption can happen without delay. A contractor that accelerates or reorganises to hold the completion date may have no extension of time claim but a valid claim for lost productivity.
- The remedies differ. Delay leads to an extension of time and prolongation costs, while disruption leads to compensation for the lower output of labour and plant.
- The notice rules apply to both. Under Sub-Clause 20.2 of the FIDIC 2017 Red Book, the contractor must give a Notice of Claim within 28 days after it became aware, or should have become aware, of the event.
- The measured mile is the preferred method. The SCL Protocol prefers a comparison between productivity in disrupted and undisrupted periods of the same work, where the records allow it.
- Global claims are weak. The SCL Protocol discourages claims that do not link each cause to its effect, and a claim of that kind may fail entirely if part of the loss has another cause.
- Records decide the outcome. In onshore proceedings the court expert examines labour allocation, daily reports and programmes, and a claim without them will not survive the expert stage.
Who this applies to
This applies to commercial managers, planners, quantity surveyors and directors of main contractors, subcontractors and MEP contractors on construction projects and energy projects in the UAE. It also concerns employers, developers and project managers who need to assess or defend a disruption claim.
Our construction lawyers in Dubai prepare and defend disruption claims in negotiation, before dispute boards, in arbitration and in the onshore courts. This article covers disruption and loss of productivity. Our article on delay claims in UAE construction covers extensions of time and prolongation costs, and our article on concurrent delay explains what happens when both parties cause delay.
The legal framework
- FIDIC Conditions of Contract for Construction, 2017 edition. The Red Book allows the contractor to recover Cost for listed employer risk events, values variations under Clause 13 and sets the claims procedure in Sub-Clause 20.2.
- The UAE Civil Code, Federal Law No. 5 of 1985. Its provisions on contracts and compensation govern contracts concluded before 1 June 2026, and Article 246 requires each party to perform the contract in good faith.
- The Civil Transactions Law, Federal Decree-Law No. 25 of 2025. The new law governs contracts concluded from 1 June 2026.
- The Law of Evidence, Federal Decree-Law No. 35 of 2022. It governs the appointment and reports of court experts, who assess disruption claims in onshore litigation.
- The SCL Delay and Disruption Protocol, second edition. The Protocol is guidance rather than law, but UAE tribunals and experts refer to it when they assess methods of analysis.
The supervising courts and tribunals:
- The onshore courts of each emirate. They hear disruption claims under contracts without an arbitration clause and rely on court-appointed engineering experts.
- Arbitral tribunals. Where the contract refers disputes to arbitration, the tribunal decides the claim with the help of party-appointed delay and quantum experts.
How delay and disruption differ
Delay concerns time, and disruption concerns productivity. The SCL Protocol describes delay analysis as an analysis of the completion date and disruption analysis as an analysis of output, and it notes that the two lead to different remedies.
Delay is about the completion date
A delay claim asks whether an event pushed back completion. The contractor proves that the event affected the critical path, which is the sequence of activities that determines the completion date. If it succeeds, it receives an extension of time, which protects it from delay damages, and may recover the cost of the longer time on site.
Disruption is about output
A disruption claim asks whether an event made the work less efficient. The affected activities do not need to be on the critical path. Take a gang of steel fixers that installs 20 tonnes a day in normal conditions. If it installs 12 tonnes a day while working around late design changes, it has suffered disruption, even if the structure finishes on time.
The two can overlap
A single event, such as a late design change, can cause both delay and disruption. The contractor may then claim both, but it must avoid recovering the same cost twice. Site overheads paid through a prolongation claim cannot appear again in the disruption claim.
What causes disruption on UAE projects
Disruption arises where the employer, the Engineer or another contractor under the employer’s control changes the conditions in which the contractor planned to work. The contract decides which of these events carry an entitlement to Cost.
Late information and design changes
Late drawings, late approvals and repeated design changes force the contractor to stop, restart and resequence work. Under the FIDIC 2017 conditions, delayed drawings or instructions and variations are employer risks that can carry an entitlement to Cost. Our article on varied works without a signed variation order covers payment where the instruction was informal.
Restricted access and trade stacking
Restricted access to parts of the site, or several trades forced into the same area at once, reduces output. The contractor’s labour waits, works around others or repeats tasks.
Acceleration
An instruction to finish earlier than the contractor’s entitlement allows, or a refusal of a justified extension of time, can force overtime, extra shifts and crowding. The resulting loss of productivity is part of the cost of acceleration, and the contractor should record the instruction in writing.
How to prove a disruption claim
A disruption claim must show three things: an event for which the employer is responsible, the loss of productivity that event caused, and the cost of that loss. The SCL Protocol states a preference for the measured mile analysis, where the records exist and it is properly carried out.
The measured mile
The measured mile compares the contractor’s productivity on a part of the work that was not disrupted with its productivity on comparable work that was. The difference, multiplied by the cost of labour or plant, gives the loss. Its strength is that it uses the contractor’s own records from the same project, so it removes arguments about tender assumptions.
Other methods
Where no undisrupted period exists, the contractor may compare its achieved progress against planned progress, or compare productivity on similar projects. Industry studies of productivity loss are the weakest form of evidence, because they do not prove what happened on the project in question.
Pricing the lost productivity
Once the lost hours are established, the contractor prices them at the actual cost of the labour and plant concerned, using payroll and plant hire records. The calculation should exclude any inefficiency the contractor priced into its tender and any loss caused by its own resourcing decisions, because an expert will remove those amounts in any case.
Why global claims fail
A global claim totals the contractor’s overrun and attributes it to the employer without linking each cause to its effect. The SCL Protocol discourages this approach. A tribunal or court expert may reject the whole claim if part of the overrun has another cause, such as the contractor’s own under-resourcing or a subcontractor’s poor performance.
Notice rules and time bars
Under Sub-Clause 20.2.1 of the FIDIC 2017 Red Book, the contractor must give a Notice of Claim within 28 days after it became aware, or should have become aware, of the event. Under Sub-Clause 20.2.4, it must then submit a fully detailed claim within 84 days.
Disruption builds up over weeks or months, so the contractor should give notice when the disrupting event first appears rather than wait until the loss is known. Where the effect continues, the contractor treats the claim as continuing and submits interim updates at monthly intervals until the final claim. The contractor should also check the particular conditions, which may shorten or amend these periods. Our article on FIDIC construction disputes in the UAE covers the enforceability of time bars.
How UAE courts and tribunals assess disruption
In onshore proceedings, the court appoints an engineering expert to examine the claim, and the expert’s report carries great weight in the judgment. The expert looks for a documented link between each event and the lost output, and for costs supported by records. Our article on court-appointed experts explains how to prepare for that process.
In arbitration, each side appoints its own delay and quantum experts, and the tribunal chooses between their analyses. A contractor whose expert relies on industry studies faces an employer’s expert who will point to the gaps in the contractor’s own records.
Under UAE law, compensation covers the loss the claimant proves. A contractor that proves only that the work was harder, without showing what that cost, will recover little.
Common mistakes in disruption claims
Waiting until the end of the project. A contractor that prepares its disruption claim only at the final account has missed the notice periods and lost the chance to record disrupted and undisrupted work side by side.
Recording opinions instead of facts. Daily reports that say work was difficult do not prove disruption. Reports should record the labour and plant on each activity, the quantity installed and the cause of any stoppage.
Mixing delay and disruption costs. Site overheads, supervision and plant hire can appear in both claims. A claim that counts them twice loses credibility with the expert and the tribunal.
Ignoring the contractor’s own problems. A claim that ignores the contractor’s own resourcing or subcontractor failures invites the employer to attack the whole claim. The analysis should identify and exclude those causes.
Relying on industry studies alone. Published productivity factors are general. Without project records to support them, a tribunal may give them little weight.
What contractors should do next
- Agree the records at the start. Agree with the Engineer the labour, plant and output records to be kept, as the SCL Protocol recommends.
- Code labour to activities. Allocate every hour of labour and plant to a specific activity and area, so productivity can be measured later.
- Give notice when disruption begins. Serve a Notice of Claim within the contractual period after the first disrupting event, and treat the claim as continuing.
- Photograph and record the conditions. Record trade stacking, restricted access and resequencing with dated photographs and site diaries.
- Identify an undisrupted benchmark. Keep productivity data for work done in normal conditions, so a measured mile analysis remains possible.
- Separate delay and disruption costs. Keep the two claims in separate cost codes from the beginning to avoid double counting.
How do contractors recover disruption costs on UAE construction projects?
Contractors recover disruption costs by proving that an employer risk event reduced their productivity and by pricing the loss from their own project records. The claim stands apart from any extension of time, so it remains available even where the project finished on time.
The main risk is evidence. A disruption claim prepared at the end of the project, without labour coded to activities and without a benchmark period, will struggle before a court expert or an arbitral tribunal.
The commercial consequence can be large. On a labour-intensive package, a fall in productivity of a quarter can turn a profitable contract into a loss, and that loss is recoverable only if the records support it.
For contractors facing lost productivity on UAE projects, our construction law team advises on disruption notices, productivity analysis and claims before dispute boards, tribunals and the onshore courts.
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