Define stage unit prices first
A price per m² (or suitable unit) should be set up front for each production stage. Grinding, primer, intermediate and top coat are priced differently; the same m² yields a different payment at different stages. Prices are fixed by contract and kept on record throughout the period.
When the unit price is tied to the stage rather than the site, the payment forms by itself the moment production is measured. Instead of a lump negotiation at period end, you get a measurable amount that accrues day by day.
- Clarify the stages and their units
- Assign a unit price to each stage
- Record price changes with their date
Measure production by location and stage
The basis of the payment is not the payment itself but the production record. Whatever stage a team completed, in whichever location and however much, is entered with its date. The same progress data feeds both field tracking and the payment; two separate files are not kept.
When production is measured by stage, the monetary value of the work done stays beyond dispute. The team sees the m² it produced and the manager sees the total cost from the same record.
Generate the period payment from records
The period payment is the production records in the selected date range multiplied by the stage unit prices and summed. Previous payments are deducted to find the net amount for that period. Because the calculation rests on records, every line can be verified retrospectively.
ChefChantier combines team production with stage prices to calculate the payment automatically. The manager picks a period, the system derives the amount from production records; preparation takes minutes, not hours, and field and office see the same figure.