GENERAL CONTRACTOR
How to Calculate Labor Cost for a Construction Job
Turn crew hours, wages and payroll burden into the real labor cost of a job instead of guessing at an hourly number.
Labor is usually the biggest cost on a job, but many contractors price it by feel — a vague hourly rate pulled from memory. The problem is that the number you charge must cover wages, hours, taxes, insurance and the benefits that make hiring possible at all. This guide shows you how to build the real labor cost and where the labor calculator fits in.
Why labor is the quietest cost on the job
Materials come with a price tag you can see. Labor does not, because the hours and the wage only become a cost after the crew has already worked. A tight bid that ignores realistic hours or payroll burden disappears into overtime, rework and unpaid taxes.
- Hours are often underestimated by 10–20%
- Payroll taxes and benefits add cost above the wage
- Rework and travel are real and rarely budgeted
- Owner hours are real work even when unpaid
Start with crew size, hours and wages
Begin with the people on the job: how many workers, how many hours each will work, and what each one costs per hour before benefits. Multiply those together for base wages, then remember that these are only the starting point.
Add payroll burden on top of the wage
Workers' compensation, Social Security and Medicare taxes, unemployment insurance, paid time off and health benefits all sit on top of the base wage. Most trades see a burden of 15–30% of base pay. Adding it turns a wage into the true employee cost the business must recover.
Calculate the real number with your own inputs
Use the calculator with your actual crew size, hours, wage and burden. It separates base wages from the burden cost and gives you the total labor cost plus the effective cost per labor hour.
Compare your rate, then decide
The effective cost per hour from the calculator is what the job really eats. Your selling price must recover that number, plus overhead and profit. If your current rate is below it, you are losing money on every hour — even on jobs you think are going well.