Force majeure clauses are an essential part of construction agreements, especially in today's unpredictable world. These clauses help define what happens when unforeseen events prevent parties from fulfilling their contractual obligations. Construction projects are inherently risky, with timelines often stretching over months or years and involving multiple stakeholders, complex supply chains, and exposure to weather, labor disputes, and regulatory changes. A well-drafted force majeure clause can mean the difference between a project that survives a disruption and one that collapses into litigation. This article provides a comprehensive examination of force majeure clauses in construction agreements, covering their purpose, key elements, legal considerations, and best practices for drafting and negotiation.

What Is a Force Majeure Clause?

A force majeure clause is a contractual provision that frees both parties from liability or obligation when an extraordinary event or circumstance beyond their control occurs. Common events include natural disasters, wars, strikes, or pandemics. The term “force majeure” is French for “superior force,” and in legal contexts, it refers to events that make performance impossible, impracticable, or illegal. Unlike common law doctrines such as impossibility or frustration of purpose, a force majeure clause is a creature of contract—its scope and effect depend entirely on the language the parties choose.

Construction agreements frequently incorporate force majeure provisions to allocate the risk of disruptions that neither party could have anticipated or prevented. Without such a clause, a contractor might be held liable for delays caused by a hurricane, or an owner could face penalties for failing to make progress payments when a banking crisis freezes funds. The clause provides a framework for suspending performance, granting time extensions, and sometimes adjusting compensation during covered events.

It is important to distinguish force majeure from other risk‑shifting mechanisms. For example, a “change in law” clause deals with new regulations, while a “concealed conditions” clause addresses unknown site conditions. Force majeure is reserved for external, catastrophic events that are outside the parties’ control. Understanding these distinctions helps drafters avoid overlaps and gaps in risk allocation.

Why Force Majeure Matters in Construction

Construction projects are complex and often span long periods. Unexpected events can cause delays, increased costs, or even project cancellations. Including a force majeure clause helps allocate risks and provides a clear process for handling such disruptions. The construction industry is particularly vulnerable to force majeure events for several reasons:

  • Extended timelines: Multi‑year projects are exposed to a wider range of potential disruptions, from seasonal storms to economic recessions.
  • Dependence on supply chains: A single material shortage or transportation shutdown can halt work across an entire site.
  • Third‑party dependencies: Subcontractors, suppliers, utility providers, and government agencies all introduce points of failure beyond the prime contractor’s control.
  • Weather sensitivity: Outdoor work is directly affected by extreme weather events, which are becoming more frequent with climate change.
  • Labor intensity: Strikes, epidemics, or immigration policy changes can decimate the available workforce.

During the COVID‑19 pandemic, many construction contracts were tested by government‑mandated shutdowns, supply shortages, and workforce illness. Projects with broadly worded force majeure clauses were better positioned to claim time extensions and avoid damages. Those with narrow or absent clauses faced contentious disputes over whether a pandemic qualified as force majeure. The pandemic served as a stark reminder that force majeure clauses must be drafted with foresight and flexibility.

Key Elements of a Comprehensive Force Majeure Clause

Every force majeure clause should address several core components. Below we break down each element and explain its importance in the construction context.

1. Definition of Qualifying Events

Clearly specify what events qualify as force majeure. Most clauses include a list of specific events (e.g., “fire, flood, earthquake, war, riot, strike, epidemic, government action”) and conclude with a catch‑all such as “or any other event beyond the reasonable control of the affected party.” The catch‑all is critical because it allows the clause to cover unforeseen situations that no one could have listed in advance. However, some courts interpret catch‑alls narrowly, applying the ejusdem generis rule—that general terms are limited to the same kind as the specific examples. To avoid this, drafters should use explicit language like “including, but not limited to” and describe the events with sufficient breadth.

2. Notification Requirements

Outline how and when parties should notify each other about force majeure events. Construction projects require rapid communication to mitigate delays and coordinate responses. A typical notification provision requires the affected party to give written notice within a set number of days (often 7 to 14) after becoming aware of the event. The notice should describe the event, its anticipated impact on performance, and the steps being taken to mitigate it. Failure to provide timely notice can result in waiver of the right to claim force majeure relief.

Some clauses also impose ongoing reporting obligations. For example, the contractor may need to update the owner weekly on the status of the force majeure event and any changes to the estimated delay. These provisions keep both parties informed and reduce the risk of disputes later.

3. Duration and Effects

Describe how long the clause applies and what remedies are available. Construction force majeure clauses typically allow for suspension of performance during the event and for a reasonable period after it ends. The clause should specify whether the affected party is entitled to an extension of time only, or also to additional compensation. In many standard form contracts (such as those published by the American Institute of Architects), force majeure events only entitle the contractor to a time extension, not to extra payment. However, parties can negotiate cost recovery if the event is particularly severe or if the owner wants to incentivize the contractor to remain on standby.

The clause may also include a “termination for convenience” or a “dead‑end date” after which either party can terminate the contract if the force majeure event lasts beyond a specified period (e.g., 90 or 180 days). This prevents indefinite suspension and gives both parties an exit strategy.

4. Mitigation Obligations

Require parties to take reasonable steps to minimize the impact. A force majeure clause should not be a free pass to do nothing. Most well‑drafted clauses impose an affirmative duty on the affected party to use diligent efforts to resume performance as soon as practical. This might include sourcing alternative materials, reassigning labor to unaffected areas, or negotiating temporary workarounds with the owner. Failure to mitigate can reduce or eliminate the relief otherwise available.

Mitigation provisions also clarify that the affected party cannot claim force majeure for delays that could have been avoided through reasonable planning. For instance, if a contractor knew a hurricane season was approaching but failed to order long‑lead materials early, a court might find that the resulting delay was not excused.

Common Force Majeure Events in Construction

While each contract will list specific events, certain categories are almost always included. Understanding these helps parties when drafting and negotiating their clauses.

  • Natural disasters: Earthquakes, floods, hurricanes, wildfires, tornadoes, and severe storms. With climate change increasing the frequency and intensity of extreme weather, these events are becoming more common.
  • War and terrorism: Armed conflict, civil unrest, acts of terrorism, and military mobilizations that disrupt supply chains or make job sites unsafe.
  • Pandemics and epidemics: The COVID‑19 pandemic highlighted the need for explicit inclusion of health crises. Many older force majeure clauses did not mention epidemics, leading to costly litigation.
  • Government actions: New laws, regulations, permits withheld, or mandatory shutdowns. Changes in building codes that require redesign can also be considered force majeure if they are unforeseeable.
  • Labor disputes: Strikes, lockouts, work slowdowns, and labor shortages caused by factors beyond the employer’s control.
  • Utility and material shortages: Power outages, fuel shortages, or supply chain disruptions that are not caused by the contractor’s own actions.
  • Unforeseen site conditions: While often covered by a separate clause, some force majeure provisions include events like unexpected archeological finds or hazardous materials that were not disclosed in the bidding documents.

Parties should consider whether to include “sub‑force majeure” provisions for subcontractors and suppliers. If a subcontractor experiences a force majeure event, the prime contractor may be excused from its own obligations, but only if the contract extends coverage to downstream events. Standard forms often do this, but bespoke contracts sometimes leave the prime contractor at risk.

While force majeure clauses provide protection, their enforceability depends on clear language and applicable law. Courts may scrutinize whether the event truly was beyond control and unforeseeable. It is crucial to draft these clauses carefully and seek legal advice. Several legal principles affect how courts interpret force majeure:

  • Foreseeability: Many jurisdictions require that the force majeure event was not reasonably foreseeable at the time of contracting. For example, a strike in an industry with a history of labor unrest might be considered foreseeable, making the clause inapplicable.
  • Causation: The affected party must prove that the force majeure event actually caused the delay or nonperformance. If the delay would have occurred anyway due to other, non‑excused reasons, the clause does not provide relief.
  • Burden of proof: The party invoking force majeure bears the burden of showing that the event qualifies, that notice was given, and that mitigation efforts were made.
  • Impossibility vs. impracticability: Some clauses require that performance be “impossible,” while others use “impracticable” or “commercially impracticable.” The latter is easier to satisfy—it may include events that make performance extremely difficult or expensive, though not literally impossible.
  • Exclusivity: If a contract has a comprehensive force majeure clause, courts often treat it as the exclusive remedy for events covered. This means the parties cannot also rely on common law doctrines like frustration of purpose unless the clause explicitly preserves them.

Case law provides helpful guidance. In Kelso v. Brite, a construction contractor was excused from delay damages when a fifty‑year flood inundated the site, despite the contract not listing “flood” specifically, because the catch‑all covered “acts of God.” Conversely, in Northern Indiana Public Service Co. v. Carbon County Coal Co., a coal supplier could not invoke force majeure when a new environmental regulation made it uneconomical to burn the coal, because the clause only covered physical events, not economic changes. This underscores the need for explicit language covering regulatory changes if that is a concern.

Parties should also be aware of international differences. Under civil law systems (e.g., France, many Middle Eastern countries), force majeure is a statutory concept with specific requirements. In common law jurisdictions (U.S., UK, Australia), the clause is purely contractual. The International Bar Association offers model force majeure clauses that can be adapted for cross‑border projects.

Best Practices for Drafting and Negotiating Force Majeure Clauses

Given the high stakes, careful drafting is essential. Below are actionable recommendations for owners, contractors, and subcontractors.

Be Specific but Flexible

Use precise and unambiguous language, but avoid an exhaustive list that could leave gaps. A best practice is to include at least ten to fifteen specific examples (e.g., earthquake, flood, fire, epidemic, strike, war, terrorism, government order, embargo, cyber attack) and then a broad catch‑all. Consider emerging risks: cyber attacks on project management systems, drone failures, or climate‑related events like “extreme heat days” are increasingly relevant.

Define Notice and Documentation Obligations

Include procedures for notification and dispute resolution. The clause should specify the form of notice (e.g., email followed by hard copy), the timeframe, and the required content. It is also wise to require the affected party to provide documentation, such as weather reports, government orders, or news articles, to substantiate the claim.

Address Compensation and Time Extensions Separately

Decide whether the clause will grant only a time extension or also allow recovery of additional costs. In many construction contracts, owners resist paying for force majeure delays because they are already bearing the risk through extended project schedules. However, contractors can negotiate cost recovery for specific situations, such as when the owner’s actions contributed to the delay or when the event leads to extended overhead. Some clauses use a tiered approach: time extension for any event, but cost recovery only for events that are “unusual and unforeseeable.”

Incorporate a Dead‑End or Termination Provision

Define a maximum duration for force majeure suspensions. If work cannot resume within that period (e.g., 120 days), either party should have the right to terminate the contract without liability except for work already performed. This prevents indefinite uncertainty and allows owners to re‑bid the project while contractors can redeploy resources.

Align with Insurance and Other Risk Provisions

Coordinate the force majeure clause with the contract’s insurance requirements. Events like fire or flood may be covered by builder’s risk insurance, and the clause should clarify that insurance proceeds are the primary remedy, not force majeure relief. Similarly, the clause should not duplicate or conflict with other risk‑sharing provisions like “changed conditions” or “differing site conditions.”

Review and Update Clauses Regularly

Review and update clauses regularly to reflect current risks. The post‑COVID world demands clauses that explicitly cover pandemics, government restrictions, and supply chain disruptions. Similarly, as technology evolves, consider including “cyber force majeure” for events that disable digital systems. Regular reviews—at least annually or when renewing a master services agreement—ensure that the clause remains aligned with the risk environment.

Conclusion

Force majeure clauses are not boilerplate; they are strategic risk‑management tools that deserve careful attention. In the construction industry, where projects are long, complex, and exposed to countless external variables, a well‑drafted clause can preserve relationships, avoid costly litigation, and keep projects on track through adversity. Both parties should negotiate these terms carefully to protect their interests, balancing specificity with flexibility. By understanding the key elements—definitions, notice, effects, mitigation, and duration—and by staying current with legal developments and emerging risks, stakeholders can craft force majeure provisions that are robust and fair.

For further guidance, consult resources such as the AIA Contract Documents, which offer standard force majeure language that can be modified, or legal treatises on construction law. Additionally, the JD Supra article on force majeure in construction provides a practical overview of recent case outcomes. Investing time in drafting a thorough force majeure clause is one of the most effective ways to safeguard a construction project against the unexpected.