Margin movement traceability
Mid-market construction operator with monthly margin deltas explained inconsistently to the board.
Per delta
narrative + source pointer attached
Narrowed
auditor sampling on margin movement
Day-of
board-pack assembly - down from 3 days
Before
- Board pack assembled by hand each month, three days of work
- Margin movements explained verbally at the meeting, not on the page
- Auditor sampling sweeps wide because lines aren't traceable
- Finance owns the number, ops owns the narrative - they don't meet
After
- Board pack assembles against a structure - finance writes commentary
- Every monthly delta carries a recorded narrative + source pointer
- Audit sampling narrows - lines are already source-pointed
- Finance and ops review the same record at the same rhythm
Illustrative narrative - no measured claim attached to either column.
Situation
A mid-market construction operator was producing monthly board packs where the same margin movement was sometimes explained as 'productivity' and sometimes as 'rework' - depending which finance team-member assembled it.
The board could see the number was moving but had no consistent narrative attaching deltas to operational reality.
Discipline installed
Margin movement register with narrative templates replacing ad-hoc commentary. Each delta carries a category, a source pointer (project, instruction, recovery line) and a written narrative.
Exception log captures unexplained movements over a threshold; the monthly board pack assembles from the register rather than being rebuilt each month.
90-day shift
Each monthly margin delta carries a recorded narrative and evidence pointer. Board questions became 'why this category' rather than 'what does this number actually mean'.
Auditor sampling on margin movement narrowed dramatically because every line was already source-pointed.
Governance gate reinforced
Reinforces the evidence-and-narrative non-negotiable: every reported margin movement is traceable to operational record, not finance interpretation alone.
What was installed
Margin movement register, narrative templates, source-pointer index, exception log and board-pack assembly.
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