Auto repair authorization form

An auto repair authorization form records a customer agreeing to a stated price before the work starts. A complete one covers four separate moments: diagnosis, teardown, the repair, then any increase found along the way. Below is every field, the statutory wording quoted in full, and a worked diesel ticket showing what each of the four signatures has to carry when a job grows.

Key takeaways

• Four authorizations, four amounts, four timestamps.
• A phone approval in California needs five facts written onto the work order.
• The statute prints the acknowledgment wording itself. Copy it exactly.
• A teardown signature that omits reassembly hours means you eat them.

What are the four authorizations?

Authorization 1. Diagnosis

Authorization 2. Teardown

Authorization 3. The repair

Authorization 4. Supplemental

What does the statute require?

California's automotive repair law is the most specific widely copied version, and the first two sentences of Business and Professions Code 9884.9 decide most arguments:

"The automotive repair dealer shall give to the customer a written estimated price for labor and parts necessary for a specific job, except as provided in subdivision (e). No work shall be done and no charges shall accrue before authorization to proceed is obtained from the customer."

Charges do not accrue. Read that as a cashflow rule. A shop that starts a teardown on a verbal go-ahead with no written estimate has no billable hours to point at when the customer walks away.

On work that grows past the estimate, the same subdivision sets the notation:

"If that consent is oral, the dealer shall make a notation on the work order of the date, time, name of person authorizing the additional repairs, and telephone number called, if any, together with a specification of the additional parts and labor and the total additional cost"

Then one of two closing steps, and the second one comes with its wording printed in the law:

"I acknowledge notice and oral approval of an increase in the original estimated price."

Copy that sentence exactly onto your form if you operate in that state. A paraphrase is a form that no longer matches the statute it was written to satisfy.

Two more subdivisions matter and get missed. On work you send out:

"The automotive repair dealer shall include with the written estimated price a statement of any automotive repair service that, if required to be done, will be done by someone other than the dealer or his or her employees."

And on letting somebody else say yes:

"A customer may designate another person to authorize work or parts supplied in excess of the estimated price, if the designation is made in writing at the time that the initial authorization to proceed is signed by the customer."

Federal guidance points shops the same way without setting a threshold. The FTC's Auto Repair Basics tells consumers what a written estimate should say:

"It should identify the condition to be repaired, the parts needed, and the anticipated labor charge. Make sure you get a signed copy."

"It should state that the shop will contact you for approval before they do any work exceeding a specified amount of time or money. State law may require this."

Your own state may set a dollar threshold, may require the estimate only on request, or may have no rule at all. Check the statute your licence is issued under before you print anything, because the wording differs and the thresholds differ more.

What does a filled-in authorization look like when the job grows?

A 2014 Ram 2500 with the 6.7L Cummins, in on a slipping complaint that became a transmission rebuild and then grew. This is an illustration and no line on it came off a real ticket. Inputs are stated: the posted labor rate is $165.00 per hour, the hours are illustrative, and the costs are illustrative supplier costs run through the bands in the parts matrix template.

Authorization 1, signed at intake, 08:15

Authorization 2, signed at 10:40

Authorization 3, signed at 14:05

Authorization 4, oral consent by phone at 16:22 the next day

The supplement raised the ticket by 18.1%, which is $992.20 divided by $5,488.58. The fluid bands on its landed total instead of per quart, because it is sold by volume. The notation on the work order recorded the date, the time of 16:22, the name of the person who authorized it and the number called, plus an itemised list of the two parts and the labor line. At pickup the customer signed the acknowledgment sentence. That is the whole difference between a collectable $6,480.78 and an argument about $5,488.58.

Where do authorization forms fail?

The last one is behavioral rather than legal. A customer who approved $5,488.58 in the afternoon and hears "$992.20 more" the next day is doing the addition in their head anyway. Saying the new total out loud, then printing it, is what stops the invoice being a surprise.

How do you copy this authorization form into a spreadsheet?

One row per authorization event, which is what makes the history readable in a dispute. The final authorized total is a running sum of the amount column.

ro_number,auth_sequence,auth_type,description,labor_hours,labor_rate,parts_itemised,amount_authorized,new_running_total,auth_datetime,auth_method,authorized_by,phone_called,signature_captured,price_validity_days

auth_type,required_fields
diagnosis,hours;rate;amount;applies_to_repair;signature
teardown,teardown_hours;reassembly_hours;declined_amount;storage_terms;signature
repair,job_list;labor_subtotal;parts_subtotal;sublet;parts_condition;amount;validity
supplemental,found_work;additional_parts_and_labor;additional_cost;new_total;notation_fields

How do you take an authorization over the phone?

Most approvals happen on a call, and the call has a shape. Work through it in order and the notation writes itself.

Step 6 is where shops lose money without noticing. A customer told "another nine hundred" heard a number that has no context, and when they see the invoice they are reconciling against the first figure they were given. A customer told "that takes the total to $6,480.78" is agreeing to the number that will appear at the bottom of the invoice.

Step 3 before step 4 matters as much. An advisor who leads with the price is asking somebody to approve a cost. An advisor who leads with the measurement is asking somebody to approve a repair, and the second question is easier to say yes to.

Two situations need a rule written before they happen. When the person answering is not the person on the ticket, you either have a designation in writing from earlier or you call back. When the customer asks you to proceed and send the paperwork later, you send it before the technician picks up a tool, because the statute in several states puts the consent before the work rather than before the invoice.

What does automated estimating change about authorization?

Nothing about the signature, deliberately. Mechanica writes the priced draft and stops. A person at the shop reads it, edits it, then decides what the customer sees, and nothing reaches a customer without that person saying yes.

What changes is how fast the number exists. Authorization 3 in the example above could not be signed until somebody looked up 9.8 hours for the exact engine, priced a rebuild kit and a converter at the shop's suppliers, then keyed nine lines onto the ticket. When the draft is already built from the completed inspection, the advisor spends that time on the phone instead, which is where the approval comes from.

The estimate template is the document this form authorizes, the repair order template holds the authorization history, and the invoice template is what the total becomes. For the vocabulary, see verbal authorization and teardown. Every form in the set is listed on the shop forms roundup and on the guides hub.

Sources

• California Business and Professions Code 9884.9
• California Business and Professions Code 9884.8
• Auto Repair Basics, Federal Trade Commission
• Businessperson's Guide to Federal Warranty Law, Federal Trade Commission
• Last verified: July 2026