Mechanica

Glossary · workflow

Repair order

A repair order is the numbered document a shop opens for one vehicle visit, carrying the customer's concern, the technician's findings, every labor and parts line, the customer's authorization and the final invoice.

workflowPublished August 3, 2026

Also called

At the counter
RO, R.O., ticket, work order, shop ticket, service order

A repair order is the numbered document a shop opens for one vehicle visit. It carries the customer's concern, the technician's findings, every labor and parts line, the customer's authorization and the total that gets billed. Everything else in a shop hangs off the number at the top of it.

What goes on a repair order?

The vehicle and the customer first, with a VIN and a mileage reading. Then the concern in the customer's own words, the cause the technician found and the correction performed, which is the concern, cause and correction record that defends the ticket later. Under that sit the labor lines with their hours, the parts lines with their numbers and prices, any sublet, the fees and the tax.

Two more things belong on it and get skipped. Authorization, with a date and a name attached to every increase. And the work the customer turned down, which stays on the document as declined work so somebody can follow up in ninety days.

When does an estimate become a repair order?

At authorization. The document starts life as an estimate an advisor builds from an inspection, a canned job or a labor guide lookup. Once the customer says yes, it becomes the record of a job in progress. Nothing before that point should have a technician's time on it.

That transition is where most shops lose money quietly. Work that starts before the number is agreed has no authorization behind it, so the shop is doing it on faith and collecting on goodwill.

What does the law require on a repair order?

It depends where you operate, and the strictest states are worth reading even if you are not in one. California's Automotive Repair Act, Business and Professions Code §9884.9(a), is direct about the sequence: "No work shall be done and no charges shall accrue before authorization to proceed is obtained from the customer."

The same section handles the phone call every shop makes at 11am, and the exact wording of what has to be written down afterwards sits in the verbal authorization entry. The short version is that an oral yes is a documented event rather than a memory.

The finished document has its own list. California's Bureau of Automotive Repair requires the final invoice to carry "a list of all repairs performed, including any work done at no charge". It also has to show the shop's name and address, its license number and every part supplied, with anything used or rebuilt flagged as such.

Keeping the paperwork is part of the same requirement. The statute puts a floor under it: "All of those records shall be maintained for at least three years", open for inspection. A shop that clears the filing cabinet on a two-year cycle finds out during a warranty claim, when the one account of what went on the vehicle has been shredded.

Why do repair orders stay open?

Parts, mostly. A truck waiting on a turbo sits in the lot with technician time already on the ticket and nothing billed against it, which is work in progress by definition. Some stay open because a technician never finished writing the correction. Some stay open because nobody wants to make the call about the declined line.

The cost is real and it hides. An open repair order is money the shop has already spent on parts and labor without collecting any of it, and a stack of them distorts every report the owner reads on Monday morning, because average repair order and car count are both computed from closed tickets.

What does a thin repair order cost?

The next conversation. A vehicle comes back with the same noise six weeks later, the advisor opens the history and reads "replaced part, road tested". Nobody can tell what was measured, what was ruled out or which part number went on, so the shop diagnoses it again for free and eats the labor.

Warranty is the other half. A parts supplier processing a claim wants the failed part number and the reason it failed. A vague ticket turns a covered claim into a shop expense. The service writer who spends ninety extra seconds on the concern line is buying the shop an argument it can win.

Is a repair order the same as a work order?

Close enough that shops use both words for the same document, and the statute quoted above uses "work order" for it. Some shop management systems separate them, with a work order as the internal copy that carries technician notes and dispatch, and the repair order as the customer-facing version. Ask which one the software means before you write a process around the word.

Fleet customers usually say work order, because that is the word their own maintenance system prints, and they will want their purchase order number on it before anything starts. A ticket missing that number becomes an unpaid invoice sitting in somebody's accounts payable queue, which is a paperwork problem the shop finds out about a month late.

Back to the glossary, or read how an estimate gets priced.

Questions shops ask

What is the difference between a repair order and an invoice?
They are two states of the same document. The repair order is open while the work is being done and holds the concern, the findings, the labor lines and the parts. It becomes the invoice at the moment it closes and gets presented for payment. Shops that print one and file the other end up with two records of one visit that disagree.
Who writes the repair order?
A service advisor opens it and owns it. The technician writes the cause and correction into it, the parts counter attaches part numbers and costs to it, and the advisor closes it. One person owning the document is what keeps the concern in the customer's words instead of somebody's summary of them.
How long should a shop keep repair orders?
Longer than you think. Old repair orders are the only record of what the shop did to a vehicle, which matters on a comeback, on a warranty claim and on any dispute. California sets a floor of three years and requires those records to stay open for inspection. Other states write their own number, so get yours from the board that licenses shops before anybody purges anything.
Does a customer have to sign the repair order?
California requires a written estimated price and authorization to proceed before any charges accrue, with a documented record when a customer approves extra work by phone. Other states write their own rules and the language differs, so read yours. Whatever the statute says, a signature is the only thing that settles an argument about what was approved.
What should the correction line say?
What was done, in enough detail that a different technician could follow it a year later. Name the part that went on, the test that confirmed the fix and anything left alone deliberately. A correction that reads 'replaced part' gives the shop nothing to stand on when the vehicle comes back.

Sources

Back to glossary