A field change order is a written directive issued during construction that tells the contractor to perform modified or added work before the parties have agreed on the final cost and schedule adjustments. The term isn’t defined in any single standard-form contract, but on AIA projects it maps to what Document A201 calls a construction change directive or, when the work is cost- and time-neutral, a minor change in the work. Treating it correctly matters because the authority to issue one, the paperwork it requires, and the deadlines that protect payment all turn on which category the change falls into.
What Counts as a Field Change Order
AIA Document A201-2017, the most widely used general conditions in U.S. construction, recognizes exactly three ways to modify work after the contract is signed. A change order under §7.2 is a written instrument signed by the owner, contractor, and architect confirming agreement on the change, the cost, and any time extension. A construction change directive under §7.3 is a written order signed by the owner and architect telling the contractor to proceed before cost and time are settled; the contractor’s signature is not required to start the work. A minor change in the work under §7.4 can be ordered by the architect alone, in writing, when the change does not affect the contract sum or schedule.1American Institute of Architects. AIA Document A201-2017 General Conditions of the Contract for Construction
What people on job sites call a field change order almost always functions as one of the latter two. The dividing line is simple. If the modification touches money or the schedule, it belongs in the construction change directive track. If it is genuinely cost-neutral and schedule-neutral, the architect can handle it alone. Either way, the directive is temporary: work proceeds now, and the final cost and time adjustments are folded into a formal change order later.
Who Has Authority to Issue One
For a minor change that doesn’t affect the contract sum or schedule, the architect can act alone under §7.4. For a construction change directive involving cost or time, both the owner and the architect must sign, but the contractor is not required to sign for the directive to take effect.2American Institute of Architects. AIA Document A201-2017 General Conditions of the Contract for Construction That is the whole point of the mechanism: it keeps the project moving when the parties disagree on price. The owner and architect direct the change, the contractor begins the work, and the cost negotiation continues.
There is a trap in the minor-change category that catches contractors regularly. If you believe a change the architect has labeled “minor” will in fact affect cost or time, you must raise it before performing the work. Under §7.4, proceeding without objecting waives the right to a later cost or time adjustment.1American Institute of Architects. AIA Document A201-2017 General Conditions of the Contract for Construction This is where most field-level disputes start. Someone calls a change minor, the contractor does the work, and the fight over money arrives later.
Many contracts also impose a dollar cap on field-level changes above which a formal change order is mandatory. The threshold varies by contract and project type; there is no universal number. On federal projects, the Federal Acquisition Regulation handles this differently: the contracting officer issues a unilateral change order under the Changes clause, and the equitable adjustment is negotiated afterward.3Acquisition.GOV. FAR Subpart 43.2 – Change Orders
The Written Notice Deadline That Protects Payment
Missing a contractual notice deadline is one of the fastest ways to lose the right to additional compensation, and it happens constantly. Under ConsensusDocs standard contracts, a contractor must provide written notice of a claim for additional cost or time within 14 days of the event giving rise to the claim, or within 14 days of first recognizing the condition, whichever is later.4ConsensusDocs. Snooze You Lose – Enforcement of Notice and Timing Provisions AIA A201 imposes a similar 14-day window for concealed site conditions, and requires the contractor to notify the owner and architect within 14 days of first discovering concealed or unknown conditions that differ materially from what the contract documents indicated.1American Institute of Architects. AIA Document A201-2017 General Conditions of the Contract for Construction Other contracts use windows ranging from 7 to 21 days.
The notice has to be in writing. A verbal heads-up to the owner’s representative at the morning meeting does not count. The safe approach is a dated letter or email that identifies the change, states that you intend to seek a cost or time adjustment, and references the contract clause requiring the notice. Even if the final cost is unknown, the notice preserves the right to negotiate it later.
Documenting the Directive So It Holds Up
On AIA projects, the correct form for a construction change directive is G714, not G701. G701 is used only for formal change orders where owner, contractor, and architect have already agreed on cost and time.5AIA Contract Documents. G701 – Change Order G714 is specifically designed for situations where cost or time have not been settled, and it directs the contractor to proceed while those details are worked out.6AIA Contract Documents. G714 – Construction Change Directive Using the wrong form creates confusion over whether the parties have actually agreed to anything.
Whether you use a standard form or a company template, the directive needs to capture a few things clearly:
- Project name, contract number, and the date the directive is issued.
- The scope of work being added, deleted, or modified, with references to the drawings or specification sections affected.
- The cost method: lump sum, unit prices, or time-and-materials. If the final cost isn’t settled, state the method that will be used to determine it.
- Whether the change affects the completion date, and by how many days if that’s known.
- Signatures. For a construction change directive, the owner and architect sign. For a minor change, the architect signs alone.
Accuracy in the cost and time fields is not optional. Vague entries like “to be determined” with no pricing method invite disputes during reconciliation. State the basis for pricing even when the final number isn’t locked down.
Converting the Directive Into a Formal Change Order
A field change directive is temporary by design. It authorizes work so the project doesn’t stall, but it does not permanently modify the contract. Every directive has to be converted into a formal change order that reflects the agreed cost and time adjustments. Under AIA A201 §7.3.7, when the contractor signs a construction change directive agreeing to the terms, it becomes effective immediately and is recorded as a change order.2American Institute of Architects. AIA Document A201-2017 General Conditions of the Contract for Construction
On federal projects the FAR makes the two-step process explicit. When a change order isn’t priced in advance, the contracting officer issues the change order first, then follows up with a supplemental agreement reflecting the equitable adjustment. The FAR directs contracting officers to negotiate these adjustments “in the shortest practicable time” and to include a release of claims in the supplemental agreement.3Acquisition.GOV. FAR Subpart 43.2 – Change Orders
Reconciliation usually happens during monthly billing cycles. Letting directives pile up is risky. Each unreconciled field change widens the gap between the work that has been performed and the contract that is supposed to govern it, and that gap is where disputes grow.
Constructive Changes and Verbal Direction
A constructive change happens when someone on the owner’s side, an inspector, an engineer, or a project representative, directs or implies that work should be done differently than specified, but never issues a written directive. The contractor does the extra work, then finds there’s no paperwork to support a claim for payment. This is one of the most litigated issues in construction law.
To recover costs for a constructive change, a contractor generally must prove two things: that a genuine change occurred in the contract requirements, and that the owner’s conduct effectively ordered it. A suggestion or an observation isn’t enough. There must have been an actual directive, or a course of conduct with the practical effect of one. The burden of showing that the owner’s conduct waived the written change order requirement is high, typically requiring clear and convincing evidence rather than the lower preponderance standard used in most civil cases.
Authority matters too. Instructions from field-level personnel like inspectors or foremen often don’t carry enough contractual authority to support a constructive change claim. Courts look for someone with substantial decision-making power over the project. On government contracts, usually only the contracting officer has authority to order changes, and directions from other government employees generally do not bind the government to additional costs.
If someone on site tells you to do something differently, get it in writing before you do the work. Chasing payment for verbal instructions after the fact is expensive, and the outcome is uncertain.
Schedule Impact and Liquidated Damages
Every field change has the potential to affect the schedule, and failing to document the time impact when the change happens is a mistake that is expensive to fix later. If a directive pushes work on a critical-path activity, the contractor needs a documented time extension or faces exposure to liquidated damages for late completion.
Contemporaneous documentation is what protects against that exposure. When a field change affects the schedule, update the project schedule right away to show the impact on critical-path activities. Log labor hours, material deliveries, and delays tied to the directive as they happen, not weeks later from memory. Photograph site conditions before and after the changed work. If the owner later disputes that the change caused the delay, this real-time evidence is what separates a successful time-extension claim from a denied one.
When a delay results from the owner changing project scope, liquidated damages become difficult for the owner to enforce. The determination of fault, whether the delay was caused by the contractor, the owner, or a combination, controls who bears the financial consequences. A well-documented field change directive that clearly shows the owner directed additional work gives the contractor strong footing to argue for a time extension rather than absorbing the delay.
Insurance and Surety Bond Notification
Field changes that alter a project’s scope, budget, or timeline can create gaps in builders risk insurance coverage if the insurer isn’t notified. A change order endorsement adjusts the policy to reflect the modified project value. Without it, the insured party faces exposure from modifications that fall outside the existing policy limits, particularly if a loss occurs while the project value exceeds the insured amount.
Surety bonds add another layer. Whether a surety must approve change orders that increase the contract price depends on the specific language of the bond. Some bonds require approval for every price increase. Others set a threshold, such as 10 percent of the original contract price, after which every additional increase needs surety sign-off regardless of size. Some standardized bonds, like the AIA A312-2010 Performance Bond, include provisions where the surety waives notice of any changes. The only way to know your obligations is to read the bond document before work begins.
When a field change directive is issued, someone on the project team should check whether it triggers notification requirements under the insurance policy or the bond. This step gets skipped constantly, and the consequences surface only when a claim is filed and the insurer or surety points to the unreported scope change as grounds to limit coverage.
The Legal Risk of Skipping the Paperwork
Contracts frequently require that all changes be in writing and signed by an authorized person before extra work begins. Courts tend to enforce these provisions strictly, which means work performed without proper written authorization may not be reimbursable. The contractor who proceeds on a handshake, planning to paper it later, is taking on significant risk.
There are limited exceptions. Some courts have found that a party’s conduct, ordering the work, accepting it, benefiting from it, can waive the written change order requirement. The burden of proof is steep. The contractor typically must show clear and convincing evidence that the requirement was waived, a higher standard than the preponderance of evidence used in most civil cases. Even when recovery is allowed under an unjust enrichment theory, compensation is generally limited to the reasonable market value of the work, excluding the contractor’s actual overhead and profit markups.
Public projects are more restrictive still. Exceptions that sometimes allow recovery for verbal changes on private work generally don’t apply to government contracts, where strict compliance with competitive bidding and contract management rules leaves little room for informal modifications.
The safe practice is simple to describe and harder to follow consistently: don’t perform changed work without a written directive, convert every field directive into a formal change order as quickly as possible, and keep every piece of documentation organized and accessible. The contractor who treats paperwork as an afterthought is the one who ends up in litigation arguing about what was authorized and what wasn’t.