Why one system
The join is the product.
Any of these features exists on its own elsewhere. What you cannot buy separately is the chain between them — and that chain is where every month-end reconciliation, every "which project actually made money", and every disputed deduction gets settled.
- →Attendance decides paid days Not a spreadsheet somebody retypes at month end.
- →Paid days decide the payslip Prorated from the month that actually happened.
- →The payslip is what a project cost Divided across the hours people logged to it.
- →The invoice is the revenue it is set against Recorded the moment it is issued.
- →And the leaver's laptop holds the settlement Because the register and payroll are the same system.
