Introduction

Construction projects are often complex and lengthy, frequently spanning multiple years from commencement to
completion. In such long-term projects, fluctuations in the costs of materials, labour, equipment, and energy can be
substantial and may significantly impact a contractor’s profitability if not appropriately managed.
To address this risk, construction contracts may include fluctuation provisions that establish mechanisms for
adjusting the Contract Price to reflect changes in input costs over time. On some projects, contractors are expected
to account for potential cost fluctuations when preparing their tenders. On others, typically large-scale or long
duration contracts, contractors may be required to tender based on current prices as at the Base Date specified in
the tender documents. In these cases, the contract incorporates explicit fluctuation provisions to reimburse the
contractor for qualifying price changes during execution of the Works.
In many public-sector projects internationally, this approach is adopted to promote competitive tendering and to
prevent inflated bid prices arising from contractors loading excessive contingencies to cover long-term inflation risk.
Under such arrangements, the Employer retains all or part of the inflation risk and manages it through a defined,
transparent, and auditable indexation mechanism.

Ashghal (PWA) Context in Qatar

In practice, under Ashghal (Public Works Authority) projects in Qatar, fluctuation provisions have historically been
rarely incorporated. The vast majority of Ashghal contracts remain fixed-price, with contractors expected to absorb
inflation risk within their tendered rates. Even where projects are of long duration or exposed to volatile global
markets, escalation clauses have traditionally been introduced sparingly and solely through express Employer
decision.
However, in more recent Ashghal projects, particularly those with substantial value and durations extend over several
years, fluctuation provisions are increasingly being considered. In some tenders, contractors are required to submit
two pricing options:
• a Base Offer (excluding fluctuation pricing); and
• an Authority’s Option (including fluctuation pricing).
Ashghal retains discretion to select which pricing option to award. Where the Authority’s Option is selected, fluctuation
clauses are subsequently excluded, reinforcing the discretionary nature of fluctuation within the Ashghal framework.

 

FID C 2017 Position on Fluctuations

Both the FIDIC Red Book (2017) and Yellow Book (2017), under Sub-Clause 13.7, allow for adjustments to the Contract
Price to account for changes in the cost of labour, materials, and other inputs. However, these provisions are not self
operating. To activate them, a Schedule of Cost Indexation must be included in the Contract.
If such a Schedule of Cost Indexation is not included in the Contract, adjustments for cost fluctuations will not apply,
even if the parties subjectively intended for indexation to operate. This is because the contract lacks the agreed
indices, weightings, and calculation mechanism required to give Sub-Clause 13.7 contractual effect. Without this
machinery, there is no legal or technical basis upon which price adjustment can be calculated or certified.

Ashghal Contractual Framework for Fluctuations Fluctuations

Similarly, under Ashghal contracts, adjustment for fluctuation is not automatic and is typically limited to projects
expressly identified by the Employer. Where fluctuation is permitted, the Payment Schedule and associated annexes
of the contract usually define whether escalation applies, the eligible cost components, and the indices to be used—
often referencing government-published or Ashghal-approved indices.
A notable practical distinction in Ashghal projects is the tighter administrative regime governing escalation. Contractors
are commonly required to submit detailed monthly statements identifying eligible work, supporting calculations, and
referenced index data. The Engineer or Supervision Consultant plays a prescriptive role in verification, and approvals
may also be subject to internal audit or governmental review.
The FIDIC Guidance Notes emphasize that adjustment for cost changes is appropriate only where it would be
unreasonable for the contractor to bear the inflation risk. They further recommend that professional input be sought
when preparing the Schedule of Cost Indexation, as poorly structured formulas or inappropriate indices may result
in invalid calculations, disputes, or unintended commercial consequences.

 

Typical FIDIC Formula for Price Adjustment

A commonly used FIDIC-style formula is:
Pn=a+b(Ln/Lo)+c(En/Eo)+d(Mn/Mo)+…
Where:
• Pn is the adjustment multiplier applied to the value of work executed in period n (typically a month);
• a represents the non-adjustable portion of the payment;
• b, c, d, … represent the proportions of labour, equipment, materials, etc.;
• Ln, En, Mn are current indices applicable 49 days prior to the end of the relevant payment period;
• Lo, Eo, Mo are base indices at the Base Date.
Example
Cost Element Coefficient Base Index (O) Current Index (n)
Labour 0.20 100 105
Materials 0.50 200 210
Equipment 0.20 150 155
Non-adjustable portion 0.10 –
Pn=0.10+0.20(105/100)+0.50(210/200)+0.20(155/150)=1.055
This represents a 5.5% increase over the base value. 

 

Application under Ashghal

In Ashghal projects, the method of calculating fluctuation is not uniform across all contracts. Many recent contracts
adopt a component-based mechanism tied to specific materials and published reference prices.
Typical features include:
• Limitation to defined materials (e.g. bitumen, reinforcement steel, diesel, aluminium, copper, polymers,
shipping);
• Use of Base Index Date and Latest Index Date for each Interim Payment Application;
• Calculation of a Price Adjustment Factor (PAF) for each component;
• Application only to the Direct Costs Certified Amount, excluding General Items, Preliminaries, and off-site
materials;
• Monthly calculation with quarterly certification and payment.
This approach provides a targeted adjustment for specific volatile commodities rather than a broad general inflationary
adjustment to the Contract Price.

Detailed Ashghal Price Adjustment Factor (PAF) Mechanism

Some Ashghal contracts further formalize escalation through a detailed PAF methodology. Key characteristics include:
• Applicability to Interim Payments and the Final Account (excluding cost-plus items);
• Extensive exclusions (post-completion works, preliminaries, provisional sums, and rejected works);
• A cumulative ±5% cap applied on the Original Contract Price.
The PAF is calculated as:
PAF = (1-NaC) × Component Weighting × ((RPn
)/(RP0
)-1)
Where:
NaC = Non-adjusting Component (typically fixed at 20%)
Component Weighting = Proportion of the material within the Works
RPo
= Latest Index Data at the time of the Interim Payment Application
RPo
= Base Index Data at the Base Date
Worked Example
Assume the following parameters:
Component: Reinforcement steel
Component Weighting = 0.30
NaC = 0.20
RPo
(Base Index) = 1.000
RPo
(Current Index) = 1.200
The percentage change in the index is calculated as:
1.200/1.000-1=0.20(20%)
Applying the formula: PAF=(1-0.20)×0.30×0.20=0.048
This means a 4.8% adjustment applies to the attributable to this component.

Contractor Delays

Sub-Clause 13.7 of FIDIC 2017 protects the Employer where delays are attributable to the contractor. In such cases,
Price adjustment is calculated using either the index applicable 49 days before the Time for Completion or the current
index, whichever is more favourable to the Employer.
Ashghal contracts mirror and strictly enforce this principle. Contractors in culpable delay may lose entitlement to
escalation entirely during the overrun period. Contractors must therefore recognize that programme slippage on
Ashghal projects carries not only exposure to liquidated damages but also a direct commercial impact on recoverable
fluctuation, where such entitlement exists at all.

Strategic Value of Including Fluctuation Mechanisms

Selective and well-structured inclusion of fluctuation provisions can offer tangible benefits to both the Employer
and the Contractor, particularly on long-duration or market-sensitive projects. When properly designed, fluctuation
mechanisms can improve value for money, reduce dispute risk, and enhance overall project delivery outcomes.
From the Employer’s perspective, the inclusion of a controlled fluctuation mechanism can:
• Promote more competitive tender pricing by reducing the need for contractors to include excessive inflation
contingencies in their bids, particularly important for long-duration or high-volatility projects .
• Improve cost transparency, as price adjustments are calculated using published indices and predefined
formulas, enabling clearer audit trails and stronger governance.
• Reduce the risk of contractor financial distress or non-performance, which may occur when contractors are
required to absorb prolonged inflation.
• Support market stability, particularly during periods of abnormal global price volatility, by sustaining contractor
participation and capacity. For the Contractor, a clearly defined fluctuation mechanism can:
• Provide protection against uncontrollable market forces
• Reduce reliance on aggressive risk pricing at tender stage, allowing bids to align more closely with actual cost
structures;
• Improve long-term project sustainability, particularly on infrastructure programmes extending over several
years.
Importantly, Ashghal’s approach, where fluctuation is capped, component-based, and subject to strict exclusions,
demonstrates how escalation can be function as a risk-sharing tool rather than a full risk transfer to the employer.
The cap, quarterly certification, and exclusion of preliminaries ensure that the Employer retains budgetary control
while still offering limited relief to contractors during periods of abnormal market conditions.
When applied selectively to suitable projects (for example, long-duration highway, roads, drainage, or utility works
with high commodity exposure), such mechanisms can enhance overall value for money while preserving public
sector accountability.

Managing Fluctuation Risk in Long-Duration Ashghal Projects

Given that fluctuation provisions under Ashghal (PWA) contracts are rare, tightly constrained, and often capped,
contractors undertaking long-duration projects must adopt proactive commercial and operational strategies to
manage inflation and price volatility risk. Reliance on contractual escalation alone is insufficient and, in many cases,
unrealistic.
Key risk-mitigation measures include the following:

1. Robust Tender-Stage Risk Pricing
Where fluctuation is absent or heavily capped, contractors must carefully assess inflation exposure at tender stage.
This includes:
• Analyzing historical price trends for key materials such as steel, bitumen, fuel, polymers, and imported
equipment;
• Incorporating realistic allowances for long-term inflation rather than assuming market stability;
• Avoiding excessive optimism regarding programme duration.
While aggressive pricing may improve tender competitiveness, underpricing inflation risk can result in significant
downstream losses on long-duration contracts.

2. Programme Optimisation and Front-Loading of Volatile Materials
Contract duration is a major driver of exposure to fluctuation risk. Contractors should therefore:
• Optimise construction programmes to accelerate procurement and installation of inflation-sensitive materials;
• Where permissible, prioritise early procurement of commodities such as reinforcement steel, pipes, cables,
and bitumen;
• Align procurement schedules with anticipated market cycles where feasible.
Early material commitment can materially reduce exposure, but must be balanced against storage constraints, cash
flow, and the risk of design changes.

3. Strategic Procurement and Supply Chain Management
For imported materials in particular, contractors should consider:
• Entering into long-term or framework supply agreements with fixed or capped pricing;
• Diversifying supply sources to reduce dependency on single markets;
• Monitoring currency exposure and, where appropriate, adopting financial hedging instruments for foreign
exchange risk.

4. Contractual and Particular Conditions Review

Given the variability escalation mechanisms in Ashghal contracts, contractors must undertake a detailed review of
the Particular Conditions before contract execution, focusing on:
• Whether fluctuation applies at all;
• Which cost components are eligible;
• Applicable caps, exclusions, and certification timing;
• Index sources and their relevance to the contractor’s actual procurement strategy.
Misalignment between assumed escalation recovery and actual contractual entitlement is a common cause of
commercial disputes and under-recovery.

5. Claims Avoidance and Compliance Discipline
Given the exceptional nature of fluctuation under Ashghal, strict compliance is essential. Contractors should:
• Maintain clear segregation between adjustable and non-adjustable cost items;
• Retain contemporaneous procurement records, invoices, and delivery evidence;
• Ensure that Interim Payment Applications strictly follow contractual calculation methodologies.

Conclusion

Fluctuation provisions under FIDIC 2017 are intended to allocate inflation risk fairly on long-term construction
projects. Under Ashghal (PWA) contracts in Qatar, however, such provisions are exceptional, tightly controlled, and
often capped.
For contractors undertaking long-duration Ashghal projects, effective risk management therefore depends less on
contractual escalation and more on disciplined tender pricing, proactive procurement, programme optimisation, and
rigorous contract administration. Fluctuation, where available, should be viewed as a limited contingency mechanism
rather than a comprehensive hedge against inflation.

References

FIDIC (2017a). Conditions of Contract for Construction for Building and Engineering Works Designed by the Employer
(Red Book). 1st edn. Geneva: Fédération Internationale des Ingénieurs-Conseils.
FIDIC (2017b). Conditions of Contract for Plant and Design-Build (Yellow Book). 1st edn. Geneva: Fédération
Internationale des Ingénieurs-Conseils.
FIDIC (2022). FIDIC Contracts Guide: Guide to the 2017 Red, Yellow and Silver Books. 2nd edn. Geneva: Fédération
Internationale des Ingénieurs-Conseils.
Hudson, I.N.D. (2019). Hudson’s Building and Engineering Contracts. 13th edition. London: Sweet & Maxwell.
Keating, S. (2021). Keating on Construction Contracts. 11th edn. London: Sweet & Maxwell.
Public Works Authority (Ashghal) (Various years). General Conditions of Contract and Particular Conditions for Public
Works Projects. Doha: Public Works Authority, State of Qatar.
Public Works Authority (Ashghal) (Various years). Tender Documents and Contract Appendices for Infrastructure
Projects. Doha: Public Works Authority, State of Qatar.