Mastering FIDIC in arbitration: understanding, expertise and the price of ignorance

Tuesday 24 March 2026

Introduction

Arbitrating a FIDIC contract requires far more than general experience in construction disputes. It demands a nuanced understanding of the FIDIC contractual system, its procedural sequence and the role each actor plays within the structure designed by FIDIC.

Although FIDIC contracts appear to be standardised templates, in practice, each signed and formalised FIDIC contract constitutes a legal and technical ecosystem that requires a full understanding of what is inside each contract. 

When knowledge, understanding and mastery are missing from arbitrators, counsel or experts, the arbitration becomes obscure and unbalanced, the FIDIC principles are misapplied and the party with more strategic skills ends up influencing the outcome disproportionately, whose end may be an inappropriate award.

This article briefly examines the main features of FIDIC disputes, the risks that arise when participants are not familiar with the system and cases where one party uses its advanced strategies to twist the FIDIC principles in its favour, often without the other party or the tribunal realising it in time.

Contract disputes and construction arbitration

Construction projects generate disputes unlike any other type of commercial conflict. Claims develop while the project is ongoing, delays interact with design issues, variations overlap with access restrictions and cost overruns reflect multiple cumulative causes. Evidence relies on daily records and technical documentation that are rarely linear.

In arbitration, teams must reconstruct years of project activity using approved programmes, daily reports, site minutes, engineer’s notes, instructions, change orders, laboratory tests, incurred costs and baseline schedules. This complexity demands arbitrators and lawyers who are not only technically strong but also able to read the dispute through the lens of the contractual model that governed the project.

When that construction model contract is a FIDIC contract, adhering to its procedural logic and entitlement methodology is essential.

FIDIC model contracts and their peculiarities

There is no such thing as a single, universal ‘FIDIC contract’. FIDIC does not publish one standard model contract; instead, it offers several sets of General Conditions, each designed for different types of project delivery systems. These books reflect different approaches to design responsibility, risk allocation, pricing philosophy and the role of the engineer (when it has a role). Referring to ‘the FIDIC contract’ is therefore inaccurate. What exists is a family of contracts in which each book operates as a distinct contractual model.

I have met with colleagues around the world who have kindly shared with me their participation in the arbitration of FIDIC contracts, and when I ask them about the ‘colour’ of the book they are working with, they usually do not know and minimise this ‘little detail’, saying that ‘it does not matter, it is FIDIC’.

The Red, Yellow and Silver Books are not simple variations distinguished by colour. They are fundamentally different legal and technical frameworks that assign responsibilities and risks in different ways. Understanding these distinctions is indispensable in any dispute and for any practitioner (including, most of all, arbitrators) because the entitlement logic, procedural requirements, obligations of the parties and valuation methods change significantly with each book.

Under the Red Book, the contract is based on an employer-designed project. The employer (or its engineer) is responsible for providing the design, while the contractor focuses on construction. This creates a risk structure centred on the employer’s duty to provide timely and accurate information. Variations are common and valued through detailed measurement. Disputes in Red Book projects often arise from late drawings, discrepancies, access limitations or design errors: risks that belong to the employer. The engineer plays an active and essential role in supervising, administering, certifying and determining matters throughout the project.

The Yellow Book operates under a completely different logic. Here, the contractor takes responsibility for the design and must deliver a functioning plant or system that meets performance requirements. With design responsibility transferred to the contractor, the risk profile changes dramatically. Performance tests, commissioning requirements and interface management become central issues. Variations are more limited and carry heavier consequences because they can affect design integration. In this model, disputes commonly arise from performance failures, deficiencies in design or problems during testing and commissioning. The engineer remains important, but the emphasis shifts towards approvals, performance verification and functional testing.

The Silver Book represents an even more stringent allocation of risk. It is used for engineering, procurement and construction (EPC)/turnkey projects in which the contractor assumes almost all risks: design, quantities, geotechnical conditions, interfaces, performance and delivery deadlines. The price and time are expected to remain fixed, and the contractual philosophy is that the contractor must deliver a complete, operating facility with minimal intervention by the employer. Under the Silver Book, the engineer’s traditional authority is greatly reduced, or may even be absent (the fact that it is an employer’s representative is considered instead). The contract design intentionally limits the employer’s involvement to avoid variations and scope changes. As a result, disputes frequently revolve around unforeseen conditions, the boundaries of the contractor’s risk and the validity of claims in a system where adjustments are highly restricted.

These differences are not cosmetic. They fundamentally shape the parties’ rights and obligations. Treating these books as interchangeable or assuming that all FIDIC contracts function under the same principles leads to serious errors in contract administration and, more critically, in arbitration.

A tribunal that analyses a Yellow Book dispute as if it were a Red Book project may incorrectly assign design responsibility, misinterpret risk allocation or apply valuation rules that do not correspond to the contract used. Likewise, attempting to apply Red Book logic to a Silver Book EPC model distorts the entire contractual structure because the Silver Book is built on an exceptional degree of risk transfer.

It is not uncommon for arbitrators around the world to accept any kind of disputes: from life sciences to corporate, including among all their cases, construction. For many arbitrators, accepting a construction dispute is a challenge because they do not know the industry and practices, including what FIDIC contracts are and mean in a construction dispute.

The problem of lack of knowledge of the FIDIC system: it is not only about the contract

One of the greatest challenges in FIDIC arbitration is that many lawyers, arbitrators and experts approach the contract as an isolated document rather than a coherent system. Understanding FIDIC requires more than reading individual clauses; it requires grasping the logic, intent and sequence that govern entitlement, notices, the engineer’s or employer’s representative’s functions, dispute avoidance/adjudication board (DAAB) procedures and the valuation rules embedded in each book. When this systemic view is missing, claims are presented as if proving the facts and the damages were enough; notices are dismissed as trivialities; and expert analyses fail to align with the valuation methods mandated by the contract.

This lack of familiarity becomes particularly evident during hearings. Counsel immediately sense when arbitrators do not understand basic FIDIC mechanisms, especially when they ask questions that reveal uncertainty about notice triggers, the engineer’s role or the sequencing of entitlement. The dynamic forces lawyers into the uncomfortable position of educating the tribunal while arguing their case, often prompting them to overexplain, alter their strategy or soften strong arguments to compensate for the tribunal’s confusion. Expert reports may follow the same pattern, drifting away from the contract and towards general principles that do not reflect the parties’ agreed framework.

Arbitrators, counsel and experts: a duty to know about FIDIC contracts

It is an ethical duty for arbitrators, counsel and experts to acknowledge when they lack sufficient knowledge of the FIDIC system and to disclose this to the parties before accepting an appointment.

FIDIC disputes operate under a specific procedural logic – notice regimes, engineer determinations, DAAB steps, entitlement sequencing and valuation methods – that cannot be improvised during the proceedings. Entering arbitration without this literacy risks more than personal embarrassment; it jeopardises procedural fairness, distorts the allocation of rights and burdens under the relevant FIDIC book and exposes the case to avoidable costs and delays. In high-value infrastructure disputes, the absence of FIDIC fluency among the tribunal and the parties’ teams can lead to misapplied condition precedents, the admission of expert methodologies that contradict the contract and determinations that ignore the role and limits of the engineer or DAAB. The result is often years of litigation and millions of dollars in fees deployed around issues that should have been framed – or disposed of – early if the participants had understood the FIDIC framework from the outset.

Professional integrity demands transparency at the start: if an arbitrator, lawyer or expert does not speak the FIDIC language with confidence, they should disclose it, decline the engagement or undertake the necessary preparation before proceeding. In significant cases, parties deserve decision-makers and advisers who are competent in the specific contractual system governing their dispute; anything less places the procedure – and the outcome – at unnecessary risk.

Is FIDIC contract arbitration unique?

FIDIC arbitration requires not only a solid theoretical understanding of the FIDIC system but also practical knowledge of how these contracts operate on real projects. The combination of theory and practice is essential because FIDIC disputes follow a particular procedural logic that governs notices, entitlement, engineer determinations, DAAB steps, valuation methods and the sequencing of claims. When participants lack these foundations, they are unable to identify the correct procedures, do not follow the contractual pathways that create or extinguish rights and often misunderstand the evidence required to support entitlement under the specific FIDIC book. Practical experience – seeing how FIDIC mechanisms function day-to-day on live projects – is equally important because it allows counsel, arbitrators and experts to interpret contemporary records, understand the timing and meaning of instructions, recognise the implications of technical decisions and evaluate whether the parties complied with the procedural steps mandated by the contract. Without this dual literacy, the arbitration becomes vulnerable to mistakes that can distort the dispute, prolong the procedure, increase costs and ultimately put the integrity of the process at risk.

Specialised organisations: can they help for a better future in FIDIC arbitration?

Last year, the international construction and arbitration community responded to the growing complexity of FIDIC disputes by creating an organisation dedicated to promoting excellence among arbitrators who deal with FIDIC contracts.^[1] This development is not accidental; it arises from the industry’s clear demand for decision-makers who understand the contractual logic, risk allocation, procedural pathways and technical mechanisms unique to the FIDIC system.

This organisation encourages rigorous training, certification and peer recognition, helping to ensure that arbitrators deciding FIDIC cases possess both the theoretical foundations and practical experience required for fair and effective decision-making.

Its emergence marks an important step towards more professional and predictable dispute resolution. When arbitrators understand FIDIC deeply, parties can rely on arbitration as an efficient and trustworthy mechanism rather than fearing outcomes distorted by misunderstandings, procedural errors or misapplied principles. The trend towards specialised FIDIC arbitration expertise, therefore, enhances confidence in the process and reduces the chances of negative or unbalanced results that often arise when decision-makers are unfamiliar with the system.

Conclusion

The quality and reliability of FIDIC arbitration depends fundamentally on the level of expertise brought to the process by arbitrators, counsel and experts. FIDIC is not a generic construction framework but a detailed contractual system with its own procedural logic, entitlement pathways and technical mechanisms. When those directing or participating in the arbitration do not fully understand this system, the dispute becomes vulnerable to misinterpretation, procedural errors and outcomes that fail to reflect the contract actually agreed by the parties. To avoid these distortions, parties must prioritise the appointment of professionals who possess real, demonstrable mastery of FIDIC’s structure and who can navigate its requirements with precision.

The consequences of inadequate FIDIC knowledge are felt immediately in hearings. Tribunals unfamiliar with notices, sequencing rules, the engineer’s role, valuation methods or DAAB procedures generate uncertainty that forces counsel to shift their strategic focus away from the merits and towards basic education of the arbitrators. This dynamic weakens advocacy, distorts expectations, increases costs and reduces confidence in the arbitral process. By contrast, when specialised FIDIC arbitrators and practitioners handle the dispute, proceedings become more predictable, arguments are assessed within the proper contractual logic, and parties can trust that the outcome reflects both the facts and the contractual framework governing the project.

For this reason, parties should not only rely on specialists but also remain close to the organisations now emerging worldwide that promote excellence in FIDIC knowledge and training. Their work strengthens the global community of FIDIC-literate decision-makers and improves the quality of arbitral outcomes.

In high-value infrastructure conflicts, the message could not be clearer: if parties want fair, efficient and contract-faithful arbitration, they must entrust their disputes to professionals who truly speak the FIDIC language.