Schedule Efficiency (S/E)

Schedule Efficiency (S/E) is a labour-focused efficiency index that answers a foreman's most practical question: for the work we actually installed, did we use more or fewer hours than the estimate allowed? It is the earned (budgeted) hours for completed work divided by the actual hours booked against it.

Mechanically it behaves like a Cost Performance Index measured in hours instead of currency. An S/E of 1.0 means the crew is installing exactly to the labour norm; above 1.0 means they are beating the estimate; below 1.0 means the activity is burning more hours than budgeted. For example, if an activity earned 80 budgeted hours but took 100 actual hours, S/E is 0.80.

Because it is denominated in hours, S/E is the metric site teams feel most directly - it updates as hours are logged each day, needs no cost data to be useful, and flags productivity drift on a specific activity long before it shows up in the monthly cost report. WBSync surfaces S/E per WBS node so foremen can act on it live.