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The value of Time transactions included in the Weekly Costs to Date will be:
Labour Costs to the end of the Previous Year / Period +
Timesheet transactions with a Year / Period equal to the Current Year / Period
but with transaction dates <= the Sunday cut-off date +
the sum of Cost Accrual transactions with Accrual Type of Time with dates <= the Sunday cut-off date
Note that the Transaction Date is the critical date.