The Complete Guide to Labor Burden for U.S. Contractors

What is labor burden?

Labor burden is the additional cost an employer pays to employ a worker, beyond their base hourly wage or salary. It typically includes employer payroll taxes, workers' compensation and other insurance, benefits like health coverage and retirement contributions, and the cost of paid time the worker isn't producing billable work.

A worker's wage is what you pay them. Labor burden is what it costs you to have them on payroll. The gap between the two is frequently large enough to turn a profitable-looking bid into a loss if it's ignored — base wage and true labor cost are not the same number, and pricing a job off the wage alone is one of the most common ways contractors underbid work.

Calculate your own labor burden →

Why labor burden matters for contractors

Labor typically makes up half or more of a construction project's direct cost, so an inaccurate labor number moves the whole bid. Contractors who price jobs off an unburdened wage — the number on the pay stub, not the true cost — routinely underbid work by a wide margin, and a labor-burden error of just a few percentage points on a large project can represent tens of thousands of dollars in lost margin.

Accurate labor burden feeds directly into:

• Bidding and estimating — pricing a job on what a crew actually costs, not what they're paid.
• Job profitability — knowing whether a completed job actually made money.
• Hiring decisions — comparing the real cost of an additional hire against overtime or a subcontractor.
• Employee vs. subcontractor comparisons — an apples-to-apples cost comparison instead of wage-to-quote.
• Cash flow planning — payroll tax and insurance costs are due on a different schedule than the revenue they're baked into.

The labor burden formula

This calculator (and this guide) build the number in four stages. Every input maps to a field in thecalculator; the full mechanics are documented onHow It Works.

COMPENSATION
  Regular wages + Overtime pay + Bonuses/commissions
  = Gross annual compensation

EMPLOYER COSTS
  Gross compensation
  + Employer payroll taxes (FICA, FUTA, SUTA, other)
  + Insurance (workers' comp, health, dental/vision, general liability)
  + Benefits and job costs (retirement, tools, vehicle, training, etc.)
  = Total annual employer cost

CAPACITY
  Paid annual hours − Paid non-working hours
  = Productive annual hours

TRUE COST
  Total annual employer cost ÷ Productive annual hours
  = Productive-hour cost ("true" or "fully burdened" cost)

  Burden rate = (Productive-hour cost − Base hourly wage) ÷ Base hourly wage

A separate, optional step — pricing — turns that cost into what you charge:Suggested billing rate = Productive-hour cost × (1 + markup). Markup is pricing, not labor burden; see burden vs. markup below.

What's included in labor burden

Four buckets cover most of it: employer payroll taxes (Social Security, Medicare, FUTA, SUTA), insurance (workers' compensation, health, dental/vision), benefits(retirement contributions, allowances, training), and paid non-working time (holidays, vacation, sick leave, admin hours). What belongs in each bucket isn't perfectly standardized across the industry — see the FAQ for specific edge cases like general liability and overhead.

For the field-by-field breakdown of exactly what this calculator tracks in each category, seeinput definitions on How It Works →

Glossary of terms

Base wage

Direct worker pay before taxes, insurance, benefits, and non-productive paid time.

Gross compensation

Regular wages, overtime pay, and bonuses combined — before any employer costs are added.

Payroll tax

A tax calculated on wages. Some are employer-only (FUTA, the employer share of FICA); some have both an employee and employer portion.

Labor burden / payroll burden

The employer's added cost of a worker beyond their wage. The two terms are generally used interchangeably.

Burden rate

The percentage by which a worker's true productive-hour cost exceeds their base hourly wage.

Fully burdened / loaded / true labor rate

The all-in hourly cost of a worker: total annual employer cost divided by productive annual hours.

Billable rate / billing rate

What a business charges a customer for an hour of labor — cost plus markup or margin.

Markup

An amount added on top of cost to set price: price = cost × (1 + markup%).

Margin

Profit as a share of the sell price: price = cost ÷ (1 − margin%).

Overhead

General business costs not tied to any specific worker or job — rent, admin salaries, software, marketing.

Direct labor

Labor cost directly attributable to producing billable work on a specific job.

Indirect labor

Paid labor time not directly billable to a job — training, admin work, shop time.

Productive hours

Paid hours minus paid non-working hours — the hours actually available to produce billable work.

Paid hours

All hours a worker is paid for, whether or not the time is billable.

Utilization rate

Productive hours as a percentage of paid hours.

FICA

The Federal Insurance Contributions Act — the combined Social Security and Medicare tax.

Social Security tax

An employer- and employee-paid federal tax, capped at an annual wage base that's updated yearly.

Medicare tax

An employer- and employee-paid federal tax with no wage base cap.

FUTA

Federal Unemployment Tax Act — an employer-only federal tax applied to a small annual wage base per worker.

SUTA

State Unemployment Tax Act — an employer-only state tax; the rate and wage base are set independently by each state.

Workers' compensation

Employer-paid insurance covering job-related injury or illness, priced by job classification and claims history.

PTO

Paid time off — vacation, holidays, sick leave, and similar paid, non-working time.

Overtime

Under the FLSA, pay owed at 1.5× the regular rate for hours worked beyond 40 in a workweek for covered, nonexempt employees.

General liability insurance

Business insurance covering third-party injury or property damage claims; sometimes allocated per worker, sometimes kept in overhead.

W-2 employee

A worker on payroll, subject to employer payroll taxes, workers' compensation, and (usually) benefits.

1099 contractor

An independent contractor paid a flat rate with no employer payroll tax, workers' compensation, or benefit burden added by the hiring business.

These are general concepts. For what a specific calculator field does and what value to enter, seeinput definitions on How It Works →

Labor burden vs. overhead vs. markup

These three terms get blended together constantly, and mixing them up is one of the fastest ways to under- or double-price a job.

The double-counting trap: if general overhead is already folded into a worker's labor rate, and that same overhead is also recovered through markup on the whole job, it gets charged twice. Whatever is included in a labor cost estimate shouldn't also live in the overhead recovered by markup.

Markup ≠ margin at the same percentage. On a $100 cost:

• 25% markup: sell price = $100 × 1.25 = $125
• 25% margin: sell price = $100 ÷ (1 − 0.25) = $133.33

Labor burden by trade

The mechanics of labor burden don't change by trade — the formula is the same for an electrician and a roofer. What changes is the size of two specific inputs: workers' compensation and, often, benefits richness.

Workers' compensation is priced by classification code, and construction trades span an unusually wide risk range. A general office classification might run a fraction of a percent of payroll; high-fall-risk trades like roofing routinely see some of the highest workers' comp rates in the industry. Concrete, HVAC, plumbing, electrical, carpentry, painting, and landscaping each carry their own classification and typical range — and the exact rate for any of them still depends on the insurer, the state, and the contractor's claims history (their experience modification rate), not the trade alone.

Because of that spread, using one blended burden rate across every trade in a company will tend to overprice low-risk work and underprice high-risk work. Calculating burden per trade, or at minimum per workers' compensation classification, is the more accurate approach — this calculator's trade presets exist for exactly that reason.

This section explains the economics, not the law. Workers' compensation classification and rates are set by your state and insurer — verify your actual classification and rate rather than assuming a number from this guide.

Worked examples

Every number below is computed directly by this calculator's engine, not estimated by hand — you can reproduce any of them by entering the same assumptions in the calculator. Percentages and dollar figures are illustrative for these specific assumptions, not national averages.

Notice the last two rows share similar dollar totals but got there differently: one from a much higher workers' compensation rate, the other from more paid non-working time compressing productive hours — both push the true hourly cost up, for different reasons.

See more worked examples →

Productive hours: why 2,080 is usually the wrong number

Paid hours are not productive hours. A full-time worker paid for 40 hours a week, 52 weeks a year, is paid for 2,080 hours annually. But paid holidays, vacation, sick leave, training, and administrative time all reduce the hours actually available to produce billable work — and total employer cost doesn't shrink just because some of those paid hours weren't billable.

Dividing total employer cost by 2,080 hours instead of realistic productive hours understates the true hourly cost, because it spreads the same total cost across more hours than the worker is actually available to produce. Construction labor utilization — the share of paid hours that are genuinely productive — is frequently well under 100%, so this isn't a rounding error; it's often the single largest source of error in a labor cost estimate.

In this calculator, the relationship is direct:

Productive hours = Paid hours − Paid non-working hours
Productive-hour cost = Total annual employer cost ÷ Productive hours

Total employer cost is fixed by wages, taxes, insurance, and benefits. Only the denominator — productive hours — moves when paid time off increases, which is why more PTO raises the true hourly cost even though it doesn't raise total annual pay.

How overtime affects labor burden

Under the Fair Labor Standards Act, covered nonexempt employees are owed overtime pay of at least 1.5× their regular rate for hours worked beyond 40 in a workweek. That overtime premium doesn't just increase gross wages — most percentage-based burden costs (payroll taxes, and any benefit tied to a wage percentage) apply to the higher overtime wage too, not the straight-time-equivalent rate.

Not every cost necessarily applies to the full overtime premium the same way — this calculator, for example, calculates workers' compensation on regular wages plus bonuses plus overtime hours at the straight-time rate, excluding only the 1.5× premium from that specific base, while payroll taxes apply to full gross wages including the overtime premium. That follows the NCCI Basic Manual, which counts bonuses as remuneration but lets employers restate overtime at its straight-time equivalent. Pennsylvania and Delaware do not allow the overtime-premium exclusion, and policies can vary by insurer and jurisdiction, so treat this as this calculator's specific approach, not a universal rule.

Same base wage, with and without 5 hours of weekly overtime (illustrative SUTA assumption: 2.7% rate, $9,000 wage base):

Regular overtime work is worth modeling explicitly rather than applying a standard burden rate to overtime hours — the mix of what scales with the premium and what doesn't changes the result.

PTO and non-billable time, without double-counting

Paid time off is already inside a worker's annual pay — a salaried or steady-hours worker gets paid the same whether they're on a job site or on vacation. The correct way to account for PTO in labor burden is to reduce productive hours, not to add a second wage expense on top of annual pay for the same hours. Doing both double-counts the cost.

Same wage, same everything else, only non-working paid time changed:

Annual wages are identical in both rows — only productive hours changed, and that alone moved the true hourly cost by $3. That's the correct mechanism: PTO's cost shows up as fewer hours to spread the same total cost across, not as an extra wage line.

What varies by state (and what doesn't)

This calculator does not auto-apply state tax rates — SUTA and workers' compensation change too often, and vary too much by exact location, trade, and claims history, to hard-code safely. Enter your verified state and tax-year figures directly, and re-check them at least once a year.

What's a normal labor burden percentage?

There's no single correct answer, and treating a published average as a target is a common way to end up with a wrong number. Published estimates for U.S. construction labor burden commonly range from roughly 20% to 70%+ of base wage, and the honest driver of where any specific worker falls in that range is a combination of:

• Base wage level
• State (SUTA rate and workers' comp costs both vary by state)
• Trade and workers' compensation classification
• Union vs. non-union status
• How rich the benefits package is
• How much paid non-working time is offered
• Business structure and how costs are allocated

Use a published range as a rough sanity check on your own number — if your calculated burden is wildly outside common ranges, double-check your inputs — but calculate your own rate from your actual rates and benefits rather than anchoring to someone else's average.

Common mistakes

1. Pricing off the wage, not the burdened cost. The number on the pay stub is never the full cost of the worker.
2. Dividing by 2,080 hours automatically. Ignores paid non-working time and overstates available capacity.
3. Forgetting workers' compensation. Often the largest single burden component in construction, and easy to leave out of a quick estimate.
4. Ignoring PTO's effect on productive hours. Or the opposite error: double-counting it as extra wages.
5. Confusing burden with overhead. Leads to overhead being recovered nowhere, or twice.
6. Confusing markup with margin. The same percentage produces different prices — see the formula above.
7. Forgetting state unemployment tax. SUTA has no federal default; leaving it unconfigured and assuming it's covered elsewhere understates cost.
8. Using stale tax rates. Federal wage bases change annually; state rates can change more often.
9. Using one blended rate across every trade. Overprices low-risk work, underprices high-risk work.
10. Applying a standard burden rate to overtime hours. Overtime's cost mix doesn't scale the same way as regular hours.
11. Comparing an unburdened employee wage to a subcontractor's quote. Not an apples-to-apples comparison — see below.

Employees vs. subcontractors: comparing real cost

A common pricing mistake is comparing a W-2 employee's base wage to a 1099 subcontractor'squoted rate. Those aren't the same kind of number. A subcontractor's quote is generally close to their full cost to you — there's no separate employer payroll tax, workers' compensation, or benefit burden added on top the way there is for an employee. An employee's true cost only becomes visible after burden is added. Comparing an employee's raw wage to a sub's quote will make the employee look artificially cheaper than they actually are; compare the sub's rate to the employee's fully burdened rate instead.

Frequently asked questions

Sources

Regulatory and tax claims in this guide are based on primary federal sources, current as of August 7, 2026:

• IRS Publication 15, Employer's Tax Guide — Social Security and Medicare (FICA) rates and wage bases.
• IRS Tax Topic 759 — Federal unemployment tax (FUTA) rate and wage base.
• U.S. Department of Labor, Fact Sheet #23 — FLSA overtime pay requirements.
• U.S. Department of Labor, Fact Sheet #56A — Regular rate of pay under the FLSA.
• U.S. Department of Labor, Wages and the FLSA — General wage and hour law.

State unemployment tax (SUTA) rates and wage bases, and workers' compensation rates and classifications, are set independently by each state and its insurers. This guide describes how those costs work generally; it does not publish specific state figures. Verify current values with your state workforce agency and insurance provider.