I'm an electrical contractor, and the most expensive two words in this business are "just add." Just add a couple of receptacles. Just move that panel. Just run power to the new island while you're here. None of them feel big enough to stop and write up. Add them across a job and they're the difference between the profit you bid and the profit you actually kept. The work got done. It just never got billed.

Why change orders slip

It's almost never laziness. It's friction. The crew is on a ladder, the GC asks for something, and the choice is "keep working" or "stop, find a form, write it up, chase a signature." Working wins every time. So the change happens, the paperwork doesn't, and three weeks later you're trying to bill for something with no signature and no record — and now it's an argument instead of an invoice.

An unsigned change is a gift. You did the work, you bought the material, and you handed it over for free.

The rule: no signature, no work

The contractors who don't bleed on changes all run the same discipline — the change gets captured and approved before the work starts, not after. That sounds rigid until you realize it protects everyone: the customer knows the cost before they commit, and you know you'll get paid. The only thing the "no signature, no work" rule kills is the awkward end-of-job fight.

What a change order actually needs

A change order doesn't have to be a legal document. It needs four things:

  • What's changing — a plain description of the added or altered scope.
  • What it costs — labor, material, and markup, the same way you price anything.
  • What it does to the contract — the new total, so there's no surprise at the final invoice.
  • A signature — approval on the record before the crew starts.

Get those four, fast, and the change stops being a fight and becomes a line item.

Make it a 60-second job from the field

The whole thing lives or dies on speed. If writing up a change takes ten minutes and a trip to the truck, it won't happen. If a PM can build it on a phone, attach a photo of the condition, fire it off for signature, and have it bump the job's contract value the moment it's signed — now it happens every time, because it's faster than arguing about it later.

The quiet bonus: when signed change orders automatically raise the job's contract value, your job costing and your billing both stay honest. The job knows it's a $112,000 job now, not the $100,000 you bid — so your margin math is right and the final invoice matches reality.

The one-minute version

  • Scope creep kills margin through small unbilled "just add" favors.
  • Change orders slip because of friction, not laziness — make them fast.
  • No signature, no work: capture and approve the change before it starts.
  • A signed change should raise the contract value so costing and billing stay honest.