Change Orders and the Cardinal Change Doctrine

Standard contracts require that any change to scope, price, or schedule be authorized in a written change order signed before the work proceeds. The rule protects everyone: it prevents disputes about whether work was extra or included, and it ensures the price and time impacts are agreed before money is spent. But it also creates a trap for contractors who perform extra work on a verbal instruction and seek payment later, only to run into a contractual bar requiring prior written authorization.

The practical defense is a disciplined process. When the field is directed to perform changed or extra work, the direction should be confirmed in writing immediately — an email to the project manager memorializing the instruction and reserving the right to a change order is often enough to preserve the claim, even if the formal signed change order lags.

Not every change comes labeled as one. A constructive change occurs when the owner or contractor, without issuing a formal change order, directs work that amounts to extra or different work — by reinterpreting the specifications, rejecting conforming work, accelerating the schedule, or otherwise requiring more than the contract obligated. Courts and boards have long recognized that constructive changes can be compensable even without a signed change order, provided the contractor documents the direction and its impact.

The key is contemporaneous documentation. A constructive-change claim assembled months later from memory is weak; one built from dated emails, daily reports, and notices sent as the events unfolded is strong. The paper trail is the claim.

When the cumulative changes are so extensive that they fundamentally alter the nature of the bargain, the cardinal change doctrine may allow the contractor to treat the change as a breach rather than as a priced modification. The significance is that a cardinal change can free the contractor from the contract's pricing limits on changed work, potentially allowing recovery of its actual costs rather than rates dictated by a change-order clause.

Cardinal change is fact-intensive and applied cautiously — courts will not lightly let a contractor escape the contract — but it is an important backstop against being forced to perform a radically different project at original-contract rates. A series of changes that doubles the scope, or transforms the work into something the parties never contemplated, may cross the line.

Many change and claim provisions require notice within a tight window — sometimes only a few days — or the claim is waived. The most carefully preserved constructive-change claim can still be lost if the contractor failed to give the contractual notice on time, so notice triggers must be built into field procedures, not left to chance.

When directed to perform work the contractor believes is extra but the owner insists is included, the right move is usually to proceed under protest: perform the work to keep the project moving while sending written notice that the contractor regards it as a change and reserves its rights. Refusing to perform risks a default; performing silently risks waiving the claim. Proceeding under protest threads the needle.

Confirm the contract contains a workable written change-order process; flag short notice windows and build them into operations; preserve the right to proceed under protest and to be compensated for directed and constructive changes; and ensure the change-pricing terms are reasonable. A clear, fair change mechanism is one of the most valuable protections a contractor can have, because changes are not the exception on a construction project — they are the norm.