A bumper comes off and the job changes
The approved estimate covered a rear bumper and a tail lamp. With the bumper off, the panel technician finds the rear panel creased behind it and the parking sensor bracket snapped. The car cannot go back together as it is, so the job stops. Someone takes photos, the estimator adds the parts and labour, and the supplementary goes in to the engineer.
Then everyone waits. The car sits on a bay with its back end open. The technician starts another job, then another. Two days later someone asks whether the supplementary on the silver estate was ever approved, and nobody is sure whether it was chased, or who by.
Supplementaries fall between the workshop and the office
The workshop finds the damage and the office sends the request, so neither side owns the wait. Most management systems record that a supplementary exists but do not show how long it has been outstanding or who last chased it.
- Requests go by portal, email or phone depending on the provider, so there is no single outbox.
- Replies come back to a general inbox or an estimator's own email.
- A partly approved supplementary (some items yes, some queried) is easy to misread.
- Parts for the supplementary are sometimes ordered before approval to save time, and sometimes not.
What a slow supplementary costs you
A half-stripped car on a bay is capacity you cannot use, and the longer it waits the longer the customer is in a courtesy car or without a vehicle. Key-to-key time stretches, which your work providers measure. When approval does arrive, parts ordered only at that point may not be on the shelf for days more.
There is also money. Items that were never formally approved are hard to invoice, and additional work carried out on a verbal nod can end in a dispute at invoice stage.
How we build a supplementary tracker
- When a technician finds extra damage, they log it on a tablet at the bay: photos, a short note and the job number. The job's status changes to 'awaiting supplementary' at once.
- The estimator is alerted and builds the supplementary in your estimating system as now. The tracker records when it was sent and by which route.
- Each work provider has a chase schedule you set, and the tracker prompts the right person when a chase is due, with the provider's contact details and the original request to hand.
- Replies are matched back to the job from the inbox where possible, and the outcome is recorded item by item: approved, declined or queried.
- Approved items trigger the parts order and release the job back to the workshop plan.
- A board lists every blocked car with the days waiting and the bay it is occupying.
| Stage | Owner | What the tracker records |
|---|---|---|
| Damage found | Technician | Photos, note, time |
| Supplementary sent | Estimator | Date, route, value |
| Chase due | Front office | Who chased and when |
| Decision received | Estimator | Item by item outcome |
| Job released | Workshop controller | Parts ordered, bay plan updated |
Your policy on starting work before approval stays yours. The tracker simply makes the approval status impossible to miss.
How the week feels afterwards
The workshop controller can see which bays are blocked and for how long, so the plan for tomorrow is built around real availability. Estimators are chasing on schedule rather than when someone remembers. When an invoice query arrives weeks later, the approval for each supplementary item is on the job with a date.
It becomes obvious which providers are slow to respond, which is a useful conversation to have with their account managers.
Does this sound like your workshop?
- Cars sit stripped on bays waiting for a supplementary answer.
- Nobody can say quickly how many supplementaries are outstanding.
- Approvals arrive in personal inboxes and are found late.
- Invoices get queried over extras that were agreed by phone.
- Parts for supplementaries are ordered late because approval was not noticed.