Base wage
Start with the real hourly wage or a salary converted to an hourly equivalent before burden is added.
Free labor cost calculator
Construction Labor Burden Calculator
Use this free labor burden calculator to estimate the fully burdened hourly cost of an employee before you price labor in an estimate, bid or change order.
What labor burden means in construction
Labor burden is the real hourly cost of employing a worker above the visible wage. For a contractor, that usually includes payroll taxes, workers compensation, liability-related insurance, paid time off, benefits, training, uniforms, small tools and any other labor-linked cost that follows the employee even when the client only sees an hourly field rate.
If a carpenter earns $28 per hour, the job does not cost the company only $28 per labor hour. Once burden and non-billable time are included, the actual cost per billable hour can rise sharply.
What this calculator is actually doing
| Step | What changes | Why it matters in an estimate |
|---|---|---|
| 1. Add burden | Payroll tax, workers comp, insurance, PTO, benefits and other labor-linked adders are layered onto wage. | This creates the loaded hourly cost instead of leaving labor underbuilt from the first line. |
| 2. Adjust for utilization | The loaded cost is spread across billable hours rather than ideal paid hours. | This is where downtime, meetings, loading and non-billable time stop being invisible. |
| 3. Apply markup | The estimate can move from cost recovery to a sellable hourly rate. | This is the rate that belongs in many unit-price, force-account and change-order situations. |
Why utilization changes the answer
Utilization is the share of paid time that actually gets recovered on jobs. A worker may be paid for more hours than can be billed directly: travel, rain delays, shop time, meetings, cleanup, loading or downtime still exist. If the estimator spreads loaded labor cost only across perfect production hours, the bid quietly under-recovers payroll.
That is why this calculator separates loaded labor cost from cost per billable hour. The first number shows what the employee costs. The second shows what one productive project hour really has to recover.
What belongs in a labor burden model
Employer payroll costs
Payroll taxes, workers compensation and insurance are often the first hidden cost layer that estimators forget.
Benefits and PTO
Benefits, paid time off and recurring labor-related adders should sit in the same model rather than in side notes.
Utilization reality
Use a believable billable percentage for your crew reality, not a perfect production fantasy.
Worked example using the default inputs
| Item | Default value | Impact on the rate |
|---|---|---|
| Base wage | $28.00/hr | This is only the starting point, not the real recovered labor cost. |
| Total hourly burden | $11.84/hr | Payroll tax, workers comp, insurance, PTO, benefits and other burden push loaded cost well above wage. |
| Loaded labor cost | $39.84/hr | This is the employer-side hourly cost before utilization and markup. |
| Cost per billable hour | $46.87/hr | At 85% utilization, the same worker has to recover more cost per productive job hour. |
| Suggested billable rate | $58.59/hr | With 25% markup, this is a more realistic selling rate than wage-based pricing. |
Where contractors use this number
The result is useful in three places. First, it helps price direct labor in self-perform estimates. Second, it supports time-and-material or change-order pricing. Third, it helps compare whether one crew structure is more realistic than another when utilization or wage mix changes.
If you need a full selling price after labor is loaded, pair this page with the markup calculator. If you want the logic behind the numbers, read the labor burden guide. If you need labor rates inside a reusable bid workbook, use the related template and starter-pack pages.
Quick review checklist before you trust the result
- Replace default payroll and insurance percentages with your current local numbers.
- Check whether paid time off and benefits are already partially included elsewhere in your company model.
- Be honest about billable utilization. This is usually the hidden weak spot.
- Decide whether supervision, small tools or shop labor belong here or elsewhere in your estimating system.
Common mistakes
- Pricing labor from base wage only.
- Using last year's workers compensation or payroll percentages without checking current values.
- Assuming field labor is billable nearly 100 percent of the time.
- Mixing small-tool or supervision recovery inconsistently between labor, overhead and equipment.
- Applying markup without first checking whether the loaded cost is believable.
Should labor burden be the same for every trade?
Not always. Wage levels, workers compensation classes, benefit structures and utilization can vary by trade or by crew type. Estimators often need separate rates for different roles.
Should small contractors really model utilization?
Yes. Even simple spreadsheet estimators benefit from admitting that not every paid hour is a fully productive billed hour. Utilization is one of the biggest hidden drivers of underpricing.
Does this replace payroll advice?
No. The calculator is only a planning aid. Contractors should still use current local payroll, insurance and accounting information when building final job rates.
Need the logic behind the formula?
Read the step-by-step labor burden guide if you want to understand loaded labor cost, utilization and markup before changing the defaults.
Read the labor burden guideNeed markup after labor cost?
Translate cost into sell price with a cleaner markup and margin check.
Use the markup calculatorNeed equipment priced too?
Build a matching equipment recovery rate instead of leaving machine cost vague.
Use the equipment calculatorNeed labor rates inside a workbook?
Use the starter pack if you want labor logic connected to a full Excel estimate structure.
Use the Excel starter pack