Proof of Work for Vegetation Contractors

Vegetation contractors do a large share of the actual hands-on work that touches public trees. Pruning, removals, treatments, storm response, planting and traffic management all happen through contractor crews. Without clear proof of work, the council ends up paying invoices for activity it cannot describe in detail and cannot point to in the asset record.

A practical proof-of-work standard solves three problems at once: it supports payment, it supports defensible record-keeping, and it updates the tree record so the register reflects reality.

What proof of work should include

A reasonable proof-of-work standard for vegetation contractors covers four things:

• identification — which tree or trees, by ID or precise location
• activity — what was actually done, in structured terms
• evidence — photos, forms, GPS, notes and timestamps
• closeout — what changed on the record, including condition and next action

Each of those four pieces should be required for the work order to be considered complete. Each piece should attach to the tree record, not only the job record.

Identification

The most common failure point is not photos or forms. It is identification. A photo of a pruned tree without a clear link to the asset record is hard to use later. Where possible, contractors should record the asset ID. Where that is not available, GPS plus a clear photo of the immediate surroundings is the minimum standard.

Activity

Activity should be structured, not free-text. A small, agreed list of work types — typically formative pruning, deadwooding, clearance pruning, removal, stump grind, planting, treatment, storm response — is enough for most councils. Free-text notes are useful in addition, not instead.

Evidence

Photos before and after are the standard expectation. GPS at the time of capture is increasingly available on field devices and should be required where the device supports it. Forms covering site conditions, traffic management and hazards are typically required for compliance reasons and are valuable for the record.

Closeout

Closeout is where most contractor processes drop the ball. The expectation should be that closeout updates the tree record: new latest known condition, work performed, work date, contractor identity, photos attached, recommended next action and next review date if relevant.

When closeout updates the record, the register reflects the world. When closeout updates only the invoice, the register drifts.

A short standard councils can adopt

A workable standard, in plain terms:

• every completed job lists the trees it touched, by ID or GPS+photo
• every tree touched has a structured activity record
• every tree touched has before and after photos
• every job has the standard compliance forms attached
• every completed job updates the latest known condition on each tree
• nothing is paid until those pieces are in place

It is a higher bar than many councils currently enforce. It also makes the rest of tree asset management possible.