CONSTRUCTION LABOR BURN RATE — DEFINITION, CALCULATION, AND APPLICATION.
Labor burn rate is the weekly dollar cost of labor on a project compared to the projected weekly cost from the estimate. It is not hours. It is dollars. A crew working the right number of hours at higher-than-estimated wage rates has an on-target hour count and an over-budget burn rate. Tracking burn rate catches that immediately. Tracking hours alone misses it until the payroll run shows the cost. The weekly burn rate comparison is the fastest financial control instrument available for labor-intensive projects.
SPM tracks labor burn rate weekly from timecard data for every project in an CFOS engagement. The weekly comparison is visible to the PM. The monthly trend feeds the cost-to-complete. The pattern drives the job review action items.
THE CFO METRIC THAT CONNECTS FIELD PACE TO FINANCIAL OUTCOME.
Dollars of Labor Deployed Per Week Against the Projected Weekly Requirement
Labor burn rate is the dollar value of labor being deployed per week on a project. Fully burdened — base wages plus payroll taxes, workers comp, health insurance, and retirement contributions. The projected weekly burn rate from the estimate is the labor budget divided by the number of weeks in the construction schedule. Actual weekly burn rate is actual weekly payroll cost from the closed timecard data. When actual burn rate consistently exceeds projected burn rate, the project will close with a labor overrun proportional to the excess and the remaining duration.
Burn Rate Captures Cost, Not Just Effort
Tracking labor hours tells you how many hours were worked. Labor burn rate tells you how much those hours cost. When crew composition shifts toward higher-wage classifications — more journeymen, fewer helpers — the hours may be on track but the burn rate exceeds the estimate. Conversely, a crew running at the right burn rate but behind on production has an efficiency problem. Both are visible when burn rate is tracked alongside production rate. Hours alone obscures the cost dimension. Burn rate alone obscures the production dimension. Both together produce a complete picture.
Using Burn Rate to Project Final Labor Cost
Current burn rate times remaining project weeks equals projected remaining labor cost. Add cost to date and you have the projected final labor cost. Compare to the estimated labor cost. The gap is the projected labor overrun or underrun. This is the core of the labor section of the cost-to-complete. When burn rate is higher than the estimate assumed for remaining weeks, the projected final cost increases. The cost-to-complete catches this at the phase level, updated monthly from closed books, before the full duration of the overrun has been incurred.
THE WEEKLY PROCESS THAT KEEPS LABOR COST VISIBLE.
The PM communication: The PM who sees their project's burn rate compared to the projected rate weekly has a financial frame for their crew management decisions. Overtime requests, crew size adjustments, and productivity conversations all become financially grounded when the PM can see: at this burn rate, the project will finish $18,000 over on labor. Without that number, the PM is making crew decisions without the financial context that would make them better.
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