Decompose staffing variance into its true root causes
Most WFM teams calculate staffing variance using actual occupancy — but that's fundamentally flawed. When you're understaffed, occupancy rises to compensate, which masks the true size of the gap. When you're overstaffed, occupancy drops, making the surplus look smaller than it is. This tool demonstrates the correct methodology: use planned occupancy to decompose variance into its real components. Enter your interval data — planned calls, actual calls, planned AHT, actual AHT, planned staff, and actual staff — and see the variance broken down into volume variance, AHT variance, and staffing variance. The side-by-side comparison shows exactly how the flawed method (using actual occupancy) distorts your analysis versus the correct method (using planned occupancy). This is one of the most common analytical errors in workforce management, and understanding it changes how you diagnose staffing problems.
Decompose staffing variance into volume, AHT, and staffing components — using the correct methodology that most WFM teams get wrong