Supplements, Documentation, and Communication with Stakeholders
What this domain tests
Supplements and stakeholder communication. The exam tests the supplement as a documented change to an approved estimate, the authorization chain, and the evidence needed to get additional work paid.
Core rules
- A supplement is additional damage or operations discovered after the original estimate was approved. It needs its own documentation, approval and, in most workflows, a change order rather than a fresh estimate.
- Document with dated photos, measurements, scan reports, OEM procedure pages and parts or sublet invoices. Verbal approval is not documentation.
- Communicate in a loop: customer (authorization, alternative parts, betterment, delay), insurer or payer (supplement request, total-loss exposure), parts supplier (availability, ETA), sublet vendor (calibration, alignment, glass).
- Stop and escalate when the supplement pushes the repair toward the total-loss threshold. Many states set a threshold as a percentage of actual cash value, commonly in the 70–80% range, and some use a formula adding salvage value.
- Do not order non-returnable parts or complete repairs before authorization unless the customer has accepted responsibility in writing.
Worked example
A teardown supplement takes a repair from $3,200 to $4,600. The vehicle's ACV is $5,800 and the state threshold is 75%, or $4,350. The revised figure exceeds it, so the estimator stops, sends the adjuster the photos, measurements and revised total, and flags the total-loss question before any parts are ordered. Reasoning: the threshold test belongs in the supplement conversation, not after the repair.
Traps
Repairing first and billing later; supplementing without photographs; failing to link the supplement to the original estimate; missing the total-loss trigger; and not recording customer consent for alternative parts, betterment or delays.