Hyperinflation and Construction Contracts

Inflation has been a recurring topic in construction in recent months. Most contractors have become accustomed to dealing with rising labour costs, material volatility and increasing supply chain pressure. However, there is an important distinction between ordinary inflation and what many contractors describe as hyperinflationary conditions.

Whether the current market genuinely meets the economic definition of hyperinflation is open to debate. From a commercial perspective, however, the distinction matters less than the consequence. The real question is simple: when costs rise significantly after contract award, can the contractor recover them?

The answer depends almost entirely on the contract.

For many contractors, the greatest challenge is not proving that costs have increased. It is overcoming the contractual barriers that prevent recovery.

The Difference Between Inflation and Hyperinflation

Traditional inflation is generally anticipated during tendering. Contractors include allowances within rates, suppliers fix prices for limited periods and cost plans incorporate forecast escalation.

Hyperinflationary conditions are different. They involve cost movements that materially exceed normal market expectations and occur at a pace that overwhelms tender assumptions.

In practical terms, hyperinflation creates three problems:

• Tender allowances become exhausted.
• Procurement assumptions become unreliable.
• Risk transfer mechanisms begin to break down.

The result is that projects priced on slim margins can quickly become commercially unsustainable.

The First Barrier: Fixed Price Contracting

The biggest obstacle facing contractors is often the pricing structure itself.

Many contracts remain fundamentally fixed price arrangements. The contractor has agreed to undertake the works for a defined sum and, unless the contract says otherwise, the risk of cost escalation generally sits with them.

This principle remains deeply embedded within construction procurement.

Consequently, the fact that inflation was unforeseeable or extreme does not automatically create entitlement.

Commercial fairness and contractual entitlement are not always the same thing.

NEC Contracts: The Role of Option X1

NEC contracts provide perhaps the clearest mechanism for dealing with inflation through Secondary Option X1, Price Adjustment for Inflation.

Where X1 is included, the contract price can be adjusted using agreed indices from a defined base date. The intention is to reduce inflation risk and avoid contractors having to build excessive contingencies into their tenders.

The challenge is that many NEC contracts still omit X1.

Where X1 has not been selected, the contractor generally carries the inflation risk itself. NEC guidance is clear that Option X1 exists specifically to allocate inflation risk differently. Without it, recovery becomes significantly more difficult.

Many contractors discover this only after substantial cost increases have already occurred.

The Compensation Event Misconception

A common misunderstanding is that inflation can somehow be recovered through compensation events.

Generally, this is not the case.

Compensation events deal with changes to scope, access, assumptions and other contractual events. They are not intended to compensate contractors simply because market prices have risen.

Unless inflation recovery is specifically addressed through X1 or another contractual mechanism, increased material and labour costs alone will not usually create entitlement.

This remains one of the most frequently misunderstood aspects of NEC administration.

JCT Contracts: Fluctuations Are Only Valuable If They Are Included

The JCT position is similar, although it approaches inflation differently.

JCT provides three fluctuations options:

• Option A – contribution, levy and tax fluctuations
• Option B – labour, materials and tax fluctuations
• Option C – formula adjustment using published indices

The problem is that many projects never incorporate these provisions.

Historically, fluctuations clauses were routinely deleted because inflation was considered manageable and clients sought cost certainty. The result is that many contractors continue to carry the majority of inflation risk under standard lump sum arrangements.

FIDIC: More Flexible but Not Unlimited

FIDIC contracts generally contain more sophisticated adjustment mechanisms than other contract forms.

Depending on the edition and the particular amendments applied, FIDIC may provide formula based price adjustment provisions linked to labour, materials and other cost indices.

However, the same fundamental principle applies.

The contractor can only recover what the contract permits. Where adjustment clauses have been amended, limited or removed during negotiation, entitlement may be significantly reduced.

The existence of a FIDIC contract alone does not guarantee inflation recovery.

The Practical Barriers to Recovery

Even where a contractual mechanism exists, recovery is rarely automatic.

Contractors commonly encounter several practical barriers:

Poor Record Keeping

Actual cost increases must often be demonstrated. Without procurement records, supplier quotations and supporting evidence, recovery becomes difficult.

Incorrect Notice Procedures

Many contracts impose notice obligations. Failure to comply can undermine otherwise valid claims.

Inappropriate Indices

Some inflation mechanisms rely on indices that may not accurately reflect actual project costs.

Timing Differences

Inflation may occur more rapidly than contractual adjustment mechanisms respond.

These issues can significantly reduce recoverable value even where entitlement exists.

The Employer’s Perspective

Employers face their own challenges.

Where inflation mechanisms exist, budgets become less predictable. Funding approvals become more difficult and final outturn costs become harder to forecast.

This explains why many clients continue to resist fluctuations provisions despite recent market experience.

The tension between cost certainty and market reality remains one of the industry’s most persistent commercial dilemmas.

What Good Commercial Management Looks Like

The most successful organisations are not waiting for inflation disputes to emerge.

They are:

• Reviewing contractual inflation provisions before tender.
• Assessing supply chain exposure early.
• Identifying long lead procurement risks.
• Stress testing cost plans against multiple inflation scenarios.
• Maintaining detailed procurement records.
• Ensuring contractual notices are issued correctly.

Most importantly, they understand that inflation management begins before contract award, not after costs increase.

Closing Thought

Hyperinflation may be an economic term, but its commercial consequences are very real.

For contractors, the biggest obstacle to recovery is often not proving that costs have risen. It is overcoming the contractual risk allocation agreed at tender stage.

Whether operating under NEC, JCT or FIDIC, the principle remains remarkably consistent. The contractor can usually recover inflation only where the contract expressly allows it.