What is a fully burdened labor rate?

It is an hourly labor cost built from the wage plus the employment costs included in your estimating policy. You may also encounter “loaded labor rate” or “labor burden.” These terms are not a nationally standardized cost package: one contractor may allocate certain costs to labor while another recovers them through overhead.

This calculator defines fully burdened labor cost as annual gross wages plus the entered employer payroll taxes, workers’ compensation, insurance benefits, retirement contributions and other employment costs, divided by productive job hours. General overhead is a separate optional allocation. Profit is excluded.

The result is a cost-recovery input for estimating. It is not take-home pay, a prevailing-wage determination or a customer billing rate.

Is labor burden actually used in U.S. construction?

Yes. The strongest evidence is its presence in established estimating workflows, rather than the number of blog posts using the phrase. Sage 100 Contractor’s U.S. estimating instructions tell users to include burden when creating labor cost records. Trimble B2W Estimate supports labor-related additions as percentages or time-based amounts, while the HCSS HeavyBid bid-summary tutorial treats burden as a resource cost category.

Procore’s construction guidance also describes spreading wage and employment costs over production hours. Together, these sources support treating labor burden as an established practice, particularly for contractors pricing work performed by their own employees. They do not establish what percentage of all U.S. contractors uses this exact term or formula.

Specialty contractors can use the result to build crew costs and unit prices. A general contractor that subcontracts a scope may instead receive that labor cost inside a subcontractor’s quotation. The cost still matters, but the general contractor may not calculate each subcontractor employee’s rate.

Why wages alone understate employment cost

For June 2026, the Bureau of Labor Statistics ECEC, Table 4, reported construction-industry employer compensation of $51.96 per hour worked: $36.13 in wages and salaries and $15.84 in benefits. Benefits represented 30.5% of total compensation. Expressed against wages instead, the published amounts imply approximately 43.8%; the denominator changes the percentage.

These are industry averages, not a recommended markup or an adoption survey. The figures also have their own hours-worked definition and rounding. They are not directly interchangeable with this calculator’s productive-job-hour denominator. Use your company’s records rather than copying an industry average into a bid.

The formula, with the hour basis made explicit

For a paid-hour comparison, divide the same annual labor cost by all paid hours instead. For overhead recovery, divide the employee’s allocated annual overhead by productive job hours and show it separately. Do not apply another utilization adjustment after the cost has already been spread across productive hours.

Two percentages that answer different questions

• Employer burden / gross wages: entered employer costs divided by annual wages.
• Productive-hour labor cost / base wage: the hourly result divided by the regular base wage. This multiplier also reflects the hour allocation and, when entered, overtime premiums.

Calling both figures “the burden percentage” without stating the basis makes comparisons unreliable.

Worked example: a $32 wage becomes $49.35 per productive hour

All values in this example are illustrative assumptions, not wage recommendations, tax calculations or insurance quotations. One employee earns $32 per regular paid hour, is paid for 2,080 regular hours and contributes 1,760 productive job hours. There is no overtime.

1. Annual wages: $32 × 2,080 = $66,560.
2. Employer costs: $5,500 payroll taxes + $4,200 workers’ compensation + $7,200 insurance benefits + $2,400 retirement + $1,000 other employment costs = $20,300.
3. Annual labor cost: $66,560 + $20,300 = $86,860.
4. Labor cost per productive hour: $86,860 ÷ 1,760 = $49.35, rounded.
5. Optional overhead: $8,800 ÷ 1,760 = $5.00/hr. Combined labor and allocated overhead: $54.35/hr before profit.

The employer-cost burden is 30.50% of annual wages, but the productive-hour cost is about 1.5423 times the regular base wage. The 320 paid hours outside the productive denominator explain why multiplying $32 by 1.3050 does not reproduce $49.35.

For a task estimated at 40 productive hours from this employee, the labor amount is 40 × ($86,860 ÷ 1,760) = $1,974.09, before overhead and profit. Keep internal precision instead of multiplying the displayed rounded rate.

Which costs should you enter?

Payroll taxes and workers’ compensation

Use employer-paid amounts for the same annual period as the wages. Employee tax withholding is already part of gross wages, so adding it again overstates cost. The IRS Employer’s Tax Guide explains that federal employment taxes have different bases and limits; a single flat percentage is not a complete payroll calculation. State unemployment and insurance costs require their own records. This tool therefore accepts annual dollar amounts instead of inventing a universal U.S. rate.

Paid leave and nonproductive time

Regular paid hours already include the wages for paid vacation, holidays and paid nonproductive regular time. Exclude those hours from the productive-job denominator when that matches your costing policy. Do not add the same leave wages again under benefits. Training wages belong in paid hours; a separate course fee can belong in other employment costs.

Overhead, vehicles and tools

Allocate a cost once. If a vehicle, supervisor, payroll service or insurance cost is already in the labor rate, remove that same allocation from the overhead recovery applied later. Dedicated equipment can remain a separate equipment cost. In a crew estimate, calculate rates for the different employee roles before combining the crew’s hours and costs.

Overtime, union benefits and prevailing wage

Overtime increases the wage numerator through the entered pay multiplier. The tool does not decide which hours legally qualify, determine the statutory regular rate or automatically update your annual tax and benefit amounts. Revise those amounts when testing a different work schedule.

For covered federal or federally assisted construction, Davis–Bacon requirements involve the applicable basic hourly rate and fringe benefits. A labor-cost calculator does not determine whether a fringe contribution is creditable or whether payroll complies. Use the applicable determination and contract rules before estimating the employer costs. Union agreements can also change the contribution basis.

Labor cost is different from the selling price

A contractor still needs to recover any costs excluded from this worksheet and apply the project’s pricing policy. A markup on cost and a margin on revenue use different denominators. Neither should be hidden inside an unexplained labor-burden percentage.

Before using a rate, reconcile its annual costs to payroll and benefit records, confirm which hours recover the cost, and verify that overhead is allocated once. Update the estimate when wages, insurance, benefits or expected productive hours change.

How does this compare with Mexico’s FSR?

Both methods help move beyond base wages, but this annual U.S. planning worksheet does not apply Mexican social-security formulas. For a Mexican project, use the separate FSR calculator and explanation in English. Changing currency or translating field labels does not make the two regulatory methods equivalent.

Frequently asked questions

Continue with a unit price analysis

Use the hourly cost with a documented labor consumption factor in your unit price analysis. Browse the estimating glossary or technical guides for related methods.

KOSAN is a Windows estimating application focused on projects in Mexico. This public worksheet is a separate educational tool; it does not mean that the desktop application provides U.S. payroll or prevailing-wage compliance.

Sources and method notes

Research checked on 28 October 2026. The calculator uses the explicit annual allocation model above; it does not reproduce a vendor’s proprietary software calculation. Example inputs are KOSAN’s illustrative assumptions.

1. Procore: Fully Burdened Labor Rate in Construction — method and cost-allocation considerations.
2. Trimble B2W Estimate: Labor Burdens — estimating software documentation.
3. Sage 100 Contractor, U.S.: Setting up part records for labor — wage-plus-burden estimating workflow.
4. HCSS HeavyBid: Bid Summary tutorial — separate burden cost category.
5. BLS: Employer Costs for Employee Compensation — June 2026 construction-industry data, Table 4; the current-release URL may change over time.
6. IRS: Publication 15, Employer’s Tax Guide — federal employer-tax framework.
7. U.S. Department of Labor: Davis–Bacon fringe benefit requirements — covered-project distinctions.