Wage is only one component
Labor burden is the employer cost added to direct wages. Depending on the worker, business, and location, it may include employer payroll taxes, workers’ compensation, employer-paid benefits, paid leave, training, and other paid nonworking time.
Why this matters
Estimating labor at the wage on the paycheck understates the real cost of every field hour. On a labor-heavy job, a 30–40% burden that is left out of the estimate is often larger than the profit the job was supposed to make.
Build the rate from records
- Start with the base hourly wage.
- Add employer payroll taxes that apply to the wage.
- Add workers’ compensation using the applicable classification and policy records.
- Add employer-paid benefits expressed per hour.
- Adjust for paid hours that do not create productive job hours.
What goes into burden
| Component | Typical basis | Notes |
|---|---|---|
| Employer Social Security | 6.2% of wage up to the annual wage base | Statutory (IRS) |
| Employer Medicare | 1.45% of wage (no cap) | Statutory (IRS) |
| Federal unemployment (FUTA) | On first $7,000 of wages | Net rate depends on state credit |
| State unemployment (SUTA) | Varies by state and experience | Use your state rate |
| Workers’ compensation | Per $100 of payroll by class code | From your policy, not an average |
| Benefits & paid leave | Expressed per hour | Health, retirement, PTO, training |
Why paid time needs a productivity adjustment
If 8% of paid time is nonproductive, multiplying wage by 8% slightly understates the cost of each productive hour. A clearer method divides paid-hour cost by 0.92. With a $28 wage, roughly 15% combined payroll-tax and workers’ compensation inputs ($4.20), and $4.50 of hourly benefits, paid-hour cost is $36.70. Dividing by 0.92 gives an estimated productive-hour cost of $39.89.
This remains an estimate. Overtime regular-rate rules, bonuses, different classifications, crew supervision, small tools, and unbillable travel may require separate treatment.
Common mistakes
- Estimating labor at wage instead of burdened cost.
- Using one universal ‘30%’ burden for every trade and state.
- Forgetting the productive-hour adjustment.
- Double-counting a cost that is already recovered through overhead.
Official starting points: IRS Publication 15 for employer payroll taxes and U.S. DOL construction fact sheet, plus current payroll and insurer records.
Overtime changes the number
Under the federal Fair Labor Standards Act, overtime is generally paid at one and one-half times the regular rate, and the regular rate can include more than base wage. When a job runs into overtime, the burdened cost of those hours rises, so a rate built only from straight-time pay understates crews that regularly work long weeks.
A quick sanity check
Divide the burdened rate by the base wage to get a burden multiplier. In the example above, $39.89 ÷ $28 is about 1.42, so every wage dollar costs roughly $1.42 to put on the job. If your multiplier lands far below the low 1.3s without a clear reason, a cost category is probably missing.
Frequently asked questions
What is labor burden?
Labor burden is the employer cost added to a worker's wage, including payroll taxes, workers' compensation, benefits, and paid nonproductive time.
What are the statutory payroll tax rates?
Employer Social Security is 6.2% up to the annual wage base and Medicare is 1.45% with no cap, per IRS Publication 15. Unemployment and workers' comp vary.
Why divide by a productivity factor?
Because not all paid hours are productive job hours. Dividing paid-hour cost by the productive share (for example 0.92) gives the cost of one productive hour.
Can I use one burden percentage for every job?
It is risky. Burden changes with trade classification, state, benefits, and overtime, so a single universal percentage can misprice labor.