Force Majeure and Material Adverse Change Clauses in Hong Kong Commercial Contracts

Introduction

Commercial contracts inevitably encounter unforeseen circumstances—pandemic outbreaks, natural disasters, geopolitical disruptions, financial crises—that may render performance impossible, impractical, or commercially pointless. Two contractual mechanisms that parties commonly deploy to address such contingencies are force majeure clauses and material adverse change (MAC) clauses. While both provisions operate as risk allocation tools, they serve distinct functions and are subject to distinct legal principles under Hong Kong law.

This article examines the nature, scope, and operation of force majeure and MAC clauses in Hong Kong commercial contracts, with reference to relevant case law and practical drafting considerations.

Force Majeure Clauses: Overview

A force majeure clause is a contractual provision that excuses a party from performing its obligations, or suspends the obligation to perform, upon the occurrence of specified events beyond that party's reasonable control. The term "force majeure" has no fixed meaning under Hong Kong common law—its scope depends entirely on the drafting of the clause in question.

Force majeure is a civil law concept, and English and Hong Kong courts have consistently held that the clause must be expressly included in the contract; it will not be implied. This distinguishes it from the common law doctrine of frustration (discussed below), which operates as a separate legal doctrine independent of contractual terms.

Key Elements of a Force Majeure Clause

A well-drafted force majeure clause typically addresses the following elements:

1. Definition of Force Majeure Events

The clause defines the categories of events that constitute force majeure. These may be defined broadly ("events beyond the reasonable control of the affected party") or by reference to specific enumerated events such as:

• Acts of God (earthquakes, floods, storms, typhoons)
• War, armed conflict, terrorism, or civil unrest
• Government actions or regulatory changes (including export restrictions, sanctions, or border closures)
• Epidemics or pandemics
• Industrial action or labour disputes
• Failure of utilities, telecommunications, or infrastructure
• Fire, explosion, or other catastrophes

The COVID-19 pandemic prompted significant litigation globally and highlighted the importance of specific drafting—many older contracts did not expressly list pandemics as force majeure events, leading to disputes about whether the general wording was sufficient.

2. Causal Link Requirement

Most force majeure clauses require that the relevant event must have caused or prevented the affected party's performance. Courts apply this causation requirement strictly: if the party would have been unable to perform regardless of the force majeure event, the clause will not apply. Similarly, if performance was merely more expensive or less profitable—but not actually prevented or impeded—courts may decline to find that the clause is triggered.

3. Notice Obligations

Force majeure clauses typically require the affected party to give prompt written notice of the force majeure event, describing its nature, anticipated duration, and effect on performance. Failure to comply with notice requirements may defeat a force majeure claim, even where the underlying event itself would have triggered the clause.

4. Mitigation Obligations

Most clauses impose a duty on the affected party to take reasonable steps to mitigate the effects of the force majeure event and to resume performance as soon as practicable. A party that fails to take available mitigation steps may find its force majeure protection limited or lost.

5. Consequences of a Force Majeure Event

The clause will specify the consequences of a validly triggered force majeure event. Common outcomes include:

• Suspension of the affected party's obligation to perform for the duration of the event
• Extension of performance deadlines
• If the event persists beyond a specified period, the right for either party to terminate the contract without liability
• Allocation of costs incurred during the period of suspension

Interaction with the Doctrine of Frustration

Where a force majeure clause does not apply—either because the contract contains no such clause or because the relevant event falls outside its scope—a party may seek to invoke the common law doctrine of frustration. Under Hong Kong law (following Davis Contractors Ltd v Fareham UDC [1956] AC 696 and related cases), a contract is frustrated when a supervening event, not caused by either party and not within their reasonable contemplation at the time of contracting, renders performance of the contract radically different from what was contemplated.

The doctrine of frustration is applied restrictively by Hong Kong courts. Mere increased cost, difficulty, or inconvenience is insufficient; the change in circumstances must strike at the root of the contract. Where a force majeure clause exists and addresses the situation, it will generally displace any frustration argument. Where frustration is successfully established, the Law Amendment and Reform (Consolidation) Ordinance provides for apportionment of pre-frustration losses and recovery of sums paid.

Material Adverse Change Clauses: Overview

A material adverse change (MAC) clause—also referred to as a material adverse effect (MAE) clause—is a contractual provision that allows a party (typically a buyer or investor) to decline to complete a transaction, or to terminate a contract, if a material adverse change or effect has occurred in respect of the other party or the subject matter of the transaction between signing and closing.

MAC clauses are most commonly found in:

• Mergers and acquisitions (M&A) agreements
• Loan and credit facility agreements
• Investment agreements and subscription agreements
• Private equity and venture capital transactions
• Initial public offering (IPO) underwriting agreements

Scope and Definition of MAC

The definition of a MAC is typically heavily negotiated. A broad MAC definition gives the buyer or investor maximum flexibility to exit transactions; a narrow definition provides greater certainty to the seller or borrower that the transaction will close. Key issues in MAC drafting include:

Included Circumstances

The MAC definition will specify what changes or effects are capable of constituting a MAC. These commonly include:

• Material adverse changes in the financial condition, business, operations, assets, or prospects of the target company
• Material adverse changes in the ability of the counterparty to perform its obligations under the agreement
• Events that would reasonably be expected to have a material adverse effect on the value of the transaction

Carve-Outs

Sellers and borrowers typically negotiate for carve-outs from the MAC definition, excluding changes that are attributable to general market or economic conditions, industry-wide changes, changes in law or regulation, acts of war or terrorism, or changes arising from the announcement of the transaction itself. These carve-outs ensure that the buyer or investor cannot invoke MAC for macro-level events that affect all participants in the market equally, rather than circumstances specific to the target or borrower.

Disproportionate effect qualifications are also common: even where a general market downturn is carved out, the MAC clause may nonetheless apply if the target company is disproportionately affected compared to its peers.

MAC Clauses in Hong Kong M&A Practice

In Hong Kong M&A transactions, the MAC clause typically serves as a closing condition: the buyer's obligation to complete is conditional on no MAC having occurred between signing and closing. If the buyer asserts that a MAC has occurred and the seller disputes this, a litigation or arbitration may result in which the court or tribunal must determine whether the events in question cross the materiality threshold.

Hong Kong courts (and the English courts whose decisions are highly persuasive in Hong Kong) have set a high bar for invoking MAC provisions. The Delaware Court of Chancery's decisions in Akorn v Fresenius and related cases—while not binding—have informed thinking in common law jurisdictions about what constitutes a MAC in an M&A context. The general principle is that a MAC must represent a substantial change in the target's long-term earnings power, not merely a short-term setback or a cyclical downturn.

MAC Clauses in Loan Agreements

In loan agreements, MAC provisions typically appear as representations (warranting that no MAC has occurred since a specified date), as conditions precedent to drawdown, and as events of default. A lender asserting an event of default based on a MAC must be able to demonstrate that the change in the borrower's financial condition is genuinely material, not merely a temporary or minor deterioration.

The interaction between MAC provisions in loan agreements and force majeure provisions (or the absence thereof) became a contentious issue during the COVID-19 pandemic, when lenders and borrowers disputed whether pandemic-related financial deterioration constituted a MAC triggering an event of default.

Drafting Best Practices

Given the litigation risk associated with ambiguous force majeure and MAC provisions, careful drafting is essential. Key drafting recommendations include:

• Be specific about triggering events: Enumerate relevant events for force majeure clauses rather than relying solely on general language. For MAC clauses, define the scope of change (financial condition, business, assets, prospects) with precision.
• Negotiate carve-outs carefully: Both force majeure and MAC clauses should clearly specify what is excluded from their scope, including general market conditions, regulatory changes, and disproportionate effect qualifiers.
• Include clear notice and mitigation provisions: Specify timeframes, recipients, and content requirements for force majeure notices. For MAC, specify when the buyer or investor must make a determination.
• Define materiality thresholds: For MAC clauses, consider whether financial thresholds (e.g., a specific percentage decline in revenue or EBITDA) can be used to reduce uncertainty.
• Consider governing law implications: Force majeure and MAC provisions are interpreted differently across jurisdictions. Ensure that the governing law of the contract (typically Hong Kong or English law for commercial transactions) is consistent with the parties' intended operation of these clauses.

Practical Guidance: Invoking Force Majeure or MAC

When a party considers invoking a force majeure or MAC clause, the following steps are advisable:

• Review the contract carefully to confirm the precise wording and requirements of the relevant clause
• Assess whether the events in question fall within the defined scope of the clause and satisfy the causation requirement
• Comply strictly with notice obligations, including timeframes and content requirements
• Document all relevant facts, including the nature of the force majeure event, its effect on performance, and steps taken to mitigate
• Take legal advice before asserting a MAC or force majeure position, given the potential for costly disputes if the position is challenged

How Alan Wong LLP Can Assist

Alan Wong LLP's corporate and commercial practice advises clients on force majeure, MAC, and related contractual risk allocation issues across a range of sectors and transaction types. Our services include:

• Drafting and negotiating force majeure and MAC clauses in commercial contracts, M&A agreements, and loan facilities
• Advising on the application of force majeure and MAC provisions to specific events and circumstances
• Reviewing existing contracts to assess force majeure and MAC risk exposure
• Representing clients in disputes arising from force majeure or MAC claims, including litigation and arbitration

Conclusion

Force majeure and MAC clauses are among the most consequential provisions in commercial contracts, determining which party bears the risk of unforeseen events that disrupt performance or erode value. Under Hong Kong law, both types of clauses are subject to strict interpretation, with courts requiring clear drafting, causation, and compliance with procedural requirements. Parties seeking the protection of these provisions must ensure that their contracts are carefully drafted, their notice obligations are met, and their factual position is well-documented before invoking these rights.

This article is intended for general informational purposes only and does not constitute legal advice. Readers requiring advice on specific matters should consult a qualified solicitor.