Change Order Time Tracking for Electrical Subcontractors: Bill Every Extra With a Record Behind It

A GC requests a change, your crew executes it, and three days later nobody can reconstruct exactly how long it took. The change order invoice goes out with a guess on it, or does not go out at all.

Change order time tracking is the practice of logging labor hours against a separate job code the moment change order work starts — not piecing them together from memory at billing time.

Why Electrical Subs Lose Money on Change Orders

Electrical subcontractors lose change order revenue because crews track those hours against the base contract job, making extra work invisible at billing time.

Example arithmetic, inputs visible: a 4-person crew adds a new sub-panel and runs 60 feet of conduit not in the original scope. That’s 6 hours × 4 men = 24 labor hours. At $75/hr, that’s $1,800 in billable time.

If those hours get logged under the main job, they vanish. When you go to build the change order invoice, the hours are gone — blended into base contract labor with no way to separate them.

Scale the example: one undocumented change per week, 48 working weeks, $1,800 average per change = $86,400 in unbilled labor per year. That’s not a GC dispute. That’s an internal record-keeping problem.

The loss happens before the invoice is even written, at the moment the hours land on the wrong job. The more of your field time goes to scope changes, the faster that compounds.

What Is Change Order Time Tracking?

Change order time tracking means logging labor hours against a dedicated job code for each change directive — so those hours appear on their own billing line instead of blending into base contract costs.

Standard timesheets use one job code per crew per day. That works for base contract work. It breaks the moment a GC hands your foreman a T&M ticket and your crew spends 3 hours on out-of-scope work.

The fix is to treat every change order like a mini-job: give it its own code before work starts, require crew clock-ins against that code, and close it out when complete. Each code becomes a standalone labor record for that specific change directive.

This isn’t a novel process — large commercial electrical GCs have used cost codes for change orders for decades. The problem is smaller subcontractors with 10–30 field workers often lack the mobile tools to enforce it in real time. Paper timesheets get filled out at end of day, and CO hours get lumped in wherever the foreman writes them.

For more on how time tracking connects to job profitability, see the electrical contractor time tracking guide.

How Do You Track Hours on a Change Order Job?

Create a dedicated job code for the change order before work starts, have your crew clock in against it from their phone, then export those hours directly to your change order invoice in QuickBooks. Step 1: Get written notice before work starts. If the GC gives verbal authorization, follow up with an email the same day: "Confirming we have approval to proceed on CO-07 per your direction at 2pm today." Step 2: Create the job in your time tracking app before your crew touches the work. Name it clearly: "CO-14 Panel Upgrade – Level 3." Vague names like "extra work" create problems when you have 20 of them by October. Step 3: Require the crew lead to clock in against the CO job code, not the base contract job. This takes 10 seconds on a mobile phone. Step 4: Pull the CO job report when work is complete. Those hours feed your change order invoice directly — no reconstruction, no disputes over whether it was 18 hours or 22.

For T&M work specifically, real-time clocking is non-negotiable. See T&M billing best practices for how to structure invoices that hold up.

T&M vs. Lump Sum Change Orders: What’s the Difference?

T&M change orders bill actual hours at an agreed labor rate, so every minute must be documented. Lump sum change orders price the work upfront, but you still need labor records to verify you stayed within your cost basis.

T&M is more common for electrical subcontractors because scope is unclear until the wall is open or the panel is pulled. A GC won’t know exactly how many feet of conduit a code-compliance fix requires in advance.

For T&M work, your time records are your invoice. No records, no payment. A GC project manager won’t approve an invoice that says "misc labor, 8 hours." They want crew names, dates, hours, and job codes — the same detail a payroll audit requires.

For lump sum COs, the records matter just as much. If the change takes twice as long as quoted, your labor records are the basis for a T&M follow-on or dispute resolution. Without documented hours, you’re arguing from memory against someone with a signed contract.

Change orders can sit unapproved for weeks even after verbal authorization. Tracking hours in real time means your documentation is complete regardless of when the GC formally executes the change order.

Setting Up Change Order Jobs in FieldTimesheet

Create one job per change order directive, prefix the name with "CO" and the directive number, and require crew clock-ins before work starts — never after the fact.

In FieldTimesheet, the setup takes two minutes:

1. Go to Jobs → Add Job
2. Name: "CO-07 – New Sub Panel – Bldg C"
3. Set the job's bill rate for the CO work
4. Notify your foreman: switch job codes when CO work starts

The naming convention matters. "CO-07" ties back to the GC’s change order numbering. Your project manager can reconcile FieldTimesheet exports directly against the COR log without a translation layer.

One job per CO also gives you real-time cost visibility. If CO-07 was priced at 12 hours and you’re at 10 with work half done, you can flag the overrun before you’re $2,000 over budget — while there’s still time to negotiate a revised directive.

For end-to-end job cost tracking across all your projects, see how job costing for electrical contractors works in FieldTimesheet.

Syncing Change Order Hours to QuickBooks

Time entries from FieldTimesheet go to QuickBooks as TimeActivity records when an admin clicks Sync to QuickBooks. The CO backup itself comes from FieldTimesheet's own job report.

When an admin runs the sync, each time entry goes to QuickBooks with the date, worker, hours and the clock-out note. The QuickBooks customer is not attached, so pull the CO-07 numbers from FieldTimesheet: the printable job labor report or the CSV export filtered to that job shows who worked, how many hours, and on which dates.

That report becomes the supporting documentation attached to your change order invoice. Most GCs process payment faster when the labor detail is clean — no back-and-forth requesting backup documentation.

FieldTimesheet syncs to QuickBooks via the TimeActivity API — the same method QuickBooks Time uses. The sync is one-way and manual, and entries arrive without the customer or job attached, so assign those in QuickBooks if you job-cost there. See how the full QuickBooks sync workflow connects field time to your books.

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Frequently Asked Questions

How do you separate change order hours from base contract hours? Create a separate job code for each change order directive before work starts. Require the crew to clock in against that code when CO work begins. Once hours are logged in the wrong bucket, there is no clean way to untangle them at billing time. Do I need written approval before tracking change order hours? Start tracking immediately when work begins — even before formal approval. Get written authorization before billing, but your time records document what actually happened and when. Real-time records are far more credible in a dispute than a retroactive reconstruction. What if a GC denies a change order after the hours are already worked? Timestamped clock-in records tied to your crew GPS location are your strongest dispute documentation. "We have GPS-verified records showing 4 crew members on CO-07 for 6 hours on April 14" is far more credible than "we think it was about 24 hours." Can I track change order hours on paper and enter them later? You can, but reconstruction accuracy degrades significantly within 24 hours. If your foreman is rebuilding a 4-person CO from memory on Friday afternoon, expect the hours to be wrong — usually in the GC favor. How do I price a T&M change order when I do not know the scope? Give the GC an estimated range and get a not-to-exceed authorization in writing. Track actual hours in real time. If you are approaching the cap before completion, notify the GC immediately — do not wait until the invoice. What is the best time tracking app for electrical subcontractor change orders? Look for an app that lets crews switch job codes mid-shift from a mobile device, syncs directly to QuickBooks, and captures GPS on clock-in. FieldTimesheet is built specifically for electrical contractors with those requirements. How does change order time tracking connect to QuickBooks payroll? In FieldTimesheet, an admin clicks Sync to QuickBooks and each CO time entry goes over as a TimeActivity record with date, worker, hours and the work note. The sync is one-way and manual and does not attach the customer or job, so payroll and job-cost setup in QuickBooks are still done there. Should I track change order labor at straight time or prevailing wage rates? Track actual hours and rates in separate job codes. For prevailing wage projects, those records support certified payroll documentation. FieldTimesheet per-worker hourly rate tracking handles mixed-rate crews on the same project.