Change Order Disputes: How Subcontractors Prevent and Win Them

Most change order disputes come down to three things: the extra work was never clearly approved, the notice went out late, or the cost can’t be proven. You can fix all three in the field, before anyone argues about money. Get written direction from someone with authority, send notice within the contract’s deadline, and record labor, materials and impacts the same day. This guide covers how to do that on commercial jobs, and what to do when a GC still won’t pay.

TL;DR

• Disputes start with scope. Extra work, or the perception of it, is a common source of friction between GCs and subs, so define what is extra before you do it.
• “Unless it is in writing, it doesn’t exist.” Get written direction from a person who has authority under the contract, or at minimum an email approving the work and the price.
• Notice deadlines can be as short as 48 hours for a differing condition and 7 days for a delay claim. Read your subcontract and the prime contract on day one.
• Daily reports, signed T&M tickets and cost codes for extra work are what win a disputed claim.
• If payment still stalls, you have options such as stop notices, mechanic’s liens, payment bonds and mediation, all with their own time limits.

Table of Contents

• Why change order disputes happen on subcontractor work
• Who can authorize a change, and what verbal direction is worth
• Meeting notice requirements
• The records that win a disputed change order
• Submitting the claim
• When the GC still won’t pay
• Tools that keep the record in one place
• A short routine for every change
• FAQ
• Sources

Why change order disputes happen on subcontractor work

A change order dispute is rarely about one number. It is about two parties who remember the same conversation differently.

Levelset’s guidance for GCs and subs points out that extra work, or the perception of extra work, is a common bone of contention and that a good scope definition helps clarify what counts as extra. If your scope says “drywall per plans” and the GC reads that as including a revised corridor layout, you have a dispute before you have a change.

The problem starts earlier than the field. In an AWCI feature, a Maryland contractor said the two big areas of GC conflict are scope and schedule, and that contractors now bid and build from drawings that may be only 40 percent complete. Incomplete drawings mean gray areas. Gray areas mean change orders. The same article quotes a contractor who advises getting your shop drawings approved, which leaves far fewer gray areas and fewer change orders.

A subcontract that is vague about scope makes this worse. One construction law firm notes that scope creep, the gradual expansion of work beyond the original scope, is one of the most common sources of construction disputes. It recommends that a subcontract define scope with specificity, reference the governing drawings and specifications, and set a formal process for requesting and approving changes.

The usual triggers

• Unclear scope. The bid inclusions and exclusions don’t say who handles a condition, so each side assumes the other does.
• Verbal direction. A superintendent says “just handle it” and the sub does.
• Late or missing notice. The sub sends the paperwork after the contract window closed.
• Thin backup. The price arrives as a lump sum with no hours, quantities or photos.
• Schedule impact. The extra work was small, but it pushed the crew off sequence and nobody recorded the effect.

Who can authorize a change, and what verbal direction is worth

The person who directs the change must have the authority to do it. As one contractor-side law firm explains, the person ordering a change must have authority under the contract. On AIA A201, Article 7.1.2 calls for the owner, contractor and architect to execute a change order. The same article repeats the old axiom that unless it is in writing, it doesn’t exist, and warns against relying on informal or oral directives.

Field reality pushes the other way. The Construction Management Association of America notes that approval is often verbal under field conditions, and schedule pressure leads contractors and subs to proceed without written authorization. That is a big reason change orders end up in litigation.

What to do when the GC says “just do it”

You have a few options, in order of strength:

1. Get a signed change order or written directive first. This is the clean path. Under almost all U.S. construction agreements, the CMAA says the process starts with a request, then a formal written change order and written authorization to proceed.
2. Get an email approving the work and the price. Levelset’s advice is that if you can’t get a formal change order, ask the GC or owner to email approval of the work and the price so you have proof of the request.
3. Send a notice of directed work. Travers Kegler Brown advises that if the GC won’t issue a written change order, you shouldn’t start unless it’s an emergency. Instead, send a Notice of Directed Work that says you will proceed under protest and reserve your right to compensation. The same source says to check your state’s prompt payment laws, since some protect you from nonpayment for authorized work.

We cover this scenario in more detail in our playbook for getting paid on unsigned change orders.

Work-through-dispute clauses

Read this clause before you sign. The NECA subcontractor handbook says many contracts require the contractor to perform the work even when a written change order and price adjustment have not been agreed. It adds that onerous change directive procedures with “work through dispute” provisions can put subs at practical, legal and sometimes severe financial disadvantage. A construction law firm makes a related point: many subcontracts let the GC unilaterally direct changes with compensation determined later, which shifts risk to the sub.

If you can’t negotiate the clause out, you can negotiate around it. The ABA’s Construction Lawyer advises that subcontractors should make sure their subcontracts contain language that lets them secure change order approval in a timely manner, particularly where the change comes from the owner.

Public work adds another layer

On public projects, change orders are governed by both contract and statute. The NECA handbook stresses that it is critical to confirm the public agency personnel directing the work have authority to order changes and execute change orders. It also notes that the False Claims Act makes submitting a false claim on a public work project a crime. Keep your pricing backup clean and accurate.

Meeting notice requirements

The most common way a valid claim dies is a missed deadline. Travers Kegler Brown notes that notice deadlines may be as short as 48 hours for a differing condition or 7 days for a delay claim. Its advice is to track the deadlines and send written notice to the GC that references the contract clause.

The NECA handbook says it is critical to issue notice of the potential change as soon as possible after you identify the change work or changed site condition, and, if possible, to price the work before performing it.

There is a flow-down issue too. Construction Dive reports that a GC needs its owner contract to give a few more days for notice than its subcontracts specify, so it has time to pass your change up the chain. If the GC’s window is shorter than yours, the GC can get stuck paying for your extra work with no recourse. Expect your GC to push the deadline back on you for that reason, and send notice early.

A practical notice routine

• Calendar every notice period from the subcontract and the prime contract when you start the job.
• Send notice when you first see the condition, not when you have a price.
• Cite the contract clause and describe the cause, the affected scope and the likely cost and time impact.
• Keep proof of delivery in the method the contract names.
• Follow the notice with a priced submittal.

Levelset adds that contracts may also limit overhead and profit markups on change orders, especially on public projects, so check that before you price. Our guides on what a notice of change should contain and on same-hour notices that keep schedules moving go deeper on timing.

The records that win a disputed change order

Levelset puts it bluntly: contractors don’t get paid for the work they did; they get paid for the work they documented. It also recommends that a change order request include a price breakdown and backup that proves the point.

The American Subcontractors Association’s guidance names daily reports as the key document. They should be made daily, be complete and reach the home office. Useful content includes operators, productivity, materials, equipment, activities performed, labor hours and standby time. The same source says to use a T&M ticket on every change order, a separate one for each change, and to get it signed by the contractor.

What to capture, and why

The ABA’s Tort Trial and Insurance Practice section says the best documentation is contemporaneous with the delay event. It lists dated progress photos, daily reports, meeting minutes, schedules and updates, RFIs, change orders and requests, construction change directives, correspondence, delay notices, payroll records, T&M reports, and invoices and receipts. Another ABA piece observes that records made at the time of an impact event may help resolve claims quicker than after-the-fact recollections. It adds that it can help to capture cost codes or hours for impacted areas.

Andrews Myers recommends tracking labor hours by trade and period, installed quantities by period, and cost by cost code, alongside RFIs, submittals, change directives, daily reports, look-ahead schedules and progress photos.

Code your hours to the scope

Cohen Seglias advises tracking and coding labor hours by the individual work items in your scope, starting with the schedule of values lines used for pay applications and breaking them down further. The hours should show what was done, when, and how long it took. To prove cause, connect the extra hours to specific impacts with daily logs, photos and notes on anything that hindered the work. Another construction law resource suggests creating a separate job cost category for extra work and assigning the added labor and equipment hours to it.

A law firm article on T&M documentation suggests a form letter when you’re working under protest. It tells the owner that work is proceeding under protest at the owner’s direction, that you’ll prepare daily T&M tickets detailing actual work, and that you expect the owner’s on-site representatives to sign them. Our guides on same-day change order documentation and daily T&M tickets and margin turn this into a field checklist.

Submitting the claim

Notice starts the clock. The claim itself needs substance. A Virginia Tech construction contracting text says you should follow the initial notice with a submittal explaining your claim position. That submittal cites the contract language supporting entitlement to money, time or both, and gives detailed calculations of the amount. Where you claim a time extension, it should include a CPM analysis supporting the number of days.

A clean submittal usually has:

1. The notice and the date it was sent.
2. The contract clause giving you the right to the change.
3. A description of what changed and who directed it.
4. Priced backup: hours by cost code, signed tickets, materials, equipment and markup allowed by the contract.
5. Schedule impact, with the updated schedule.
6. Photos, RFIs and correspondence.

If you want a view into markup and small-change pricing, see our pricing matrix for small change orders.

When the GC still won’t pay

If a change order stays disputed, you have options, each with its own time limits. CMAA says subcontractors can use mechanic’s liens, stop work notices, bonds or warranty claims within the required periods. It adds that subcontracts may require mediation before arbitration or a lawsuit.

• Stop payment notice. The NECA handbook describes it as a statutory tool that freezes construction funds held by owners or lenders in the amount claimed. It is especially useful where equity in the property may not support a lien.
• Payment bond. The same handbook calls it effectively a contractual guarantee of payment to those supplying labor, work, materials and equipment. If the principal fails to pay, the bond gives the claimant something to pursue.
• Mediation, then arbitration or suit. Check the dispute clause. Many require the steps in order.

State law varies a lot on lien deadlines, prompt payment rights and notice formats. We haven’t summarized every state here. Before the first dispute, ask a construction attorney in your state to review your subcontract’s notice, pay-when-paid and dispute clauses. If a deadline is close on a live dispute, call that attorney that day.

Why subs carry the risk

A contractor quoted by Construction Dive describes the imbalance: GCs self-perform none of the work and add general conditions and fees, so proceeding carries little risk for them and a lot for the sub. That’s why your own records and notice discipline matter more than the GC’s goodwill.

Perspective from Won2Build

Most subcontractors we talk to don’t lose change order disputes because they were wrong. They lose because the proof lived in a foreman’s truck, a text thread and a spreadsheet nobody updated until month end.

We built Won2Build around that gap. Our view is that the field and the office should work from the same record: hours coded to the job when they happen, change orders and T&M tickets tracked as they are priced, and bid assumptions available when someone asks “was that in your scope?” When labor tracking, change orders and estimating share one login, nobody retypes numbers, and the record is harder to lose.

That’s why we pair Time Budge for labor with CO Hub for change orders and T&M tickets, and why our apps sign in once through the Hub. A dispute is far easier to settle when the cost sits next to the notice and the signed ticket.

Jen Reese

Tools that keep the record in one place

The habits above work on paper, but they work better when field and office see the same data. Won2Build Hub is our cloud-based suite for commercial subcontractors: Time Budge for time and labor tracking, CO Hub for change orders and T&M tickets, Bid Track for bids and estimates, and Takeoff for digital plan quantification, all through a single login with real-time field-to-office sync.

Pricing is published on our pricing page. CO Hub is $59 per month per company, Time Budge is $199 per month per company, and Bid Track is $199 per month per company. Takeoff and the Hub itself are $0 per month. Active field workers are $2 per month each. You can look at Time Budge for job cost tracking or the full Won2Build suite to see which tools fit your crews.

A short routine for every change

1. Spot it. The moment you see work that isn’t in your scope, flag it to the foreman and the office.
2. Notify. Send written notice that references the contract clause, inside the deadline.
3. Get direction in writing. Signed change order, directive, or at least an email approving work and price. If refused, send a notice of directed work and proceed under protest only where the contract requires it.
4. Open a cost code. Separate extra work from base scope.
5. Record daily. Hours, crew, materials, equipment, conditions, photos, T&M ticket signed.
6. Price promptly. Submit backup while the details are fresh.
7. Chase on a schedule. Track the change order backlog so approved items turn into billings. See how we think about change order backlog and margin.

If a work order and a change order are being confused on your jobs, our explainer on work orders versus change orders helps sort out which paper you need.

FAQ

Who issues change orders?

Under almost all U.S. construction agreements, a change can be requested by the owner, the general contractor or the subcontractor. The formal change order is then prepared and authorized in writing. On an AIA A201 contract, the owner, contractor and architect execute it. A sub should confirm that whoever directs the work has authority to bind the party that will pay.

What should I do if the GC gives only verbal direction?

Ask for an email that approves the work and the price. If the GC refuses a written change order, send a Notice of Directed Work stating that you will proceed under protest and reserve your right to compensation. Keep daily reports and signed T&M tickets. Check your subcontract’s notice clause first.

How quickly do I have to give notice of a change?

It depends on your contract. Deadlines can be as short as 48 hours for a differing condition or 7 days for a delay claim. Read the subcontract and prime contract at the start of the job and calendar each deadline.

How do I resolve a disputed change order?

Start with your documentation and a priced submittal citing the contract clause. If the GC still doesn’t pay, your options can include a stop payment notice, a mechanic’s lien, a payment bond claim and mediation, each within its own time limit. A construction attorney in your state can tell you which apply.

Sources

• How GCs and Subs Can Prevent Construction Disputes
• GC Conflicts: Sources and Solutions (AWCI)
• How to Respond to Construction Subcontract Agreement (Daeryun Law)
• Contractors Beware: the Persons Directing Your Work Must Have Authority (ACS Lawyers)
• Five Steps To Keep Change Orders (CMAA)
• Legally Speaking (Travers Kegler Brown)
• Subcontractor Contract & Collections Handbook (NECA)
• A Practical Guide to Negotiating Tricky Clauses in Prime Subcontracts (ABA)
• The Dotted Line (Construction Dive)
• Project Documentation (American Subcontractors Association)
• Delay Claims Part II (ABA)
• Experts’ View (ABA)
• The Proof Is in the Paper (Andrews Myers)
• Subcontractor Record-Keeping and Inefficiency Claims (Cohen Seglias)
• How To Track Increased Construction Costs (Best Practices Construction Law)
• Protecting Your Profits Through Project Documentation (Baker Donelson)
• Construction Contract Claims (Virginia Tech)

Recommended

• Subcontractor Playbook to Get Paid for Unsigned Change Orders
• Change Orders: Same Hour Notices Help Subcontractors Avoid Delays
• Change Order Documentation: Subcontractors’ Same Day Field Checklist
• Subcontractors: Protect Margins With 48 Hour Change Order Management