Estimating 8 min read BUILT FOR CONTRACTORS

How to Calculate Labor Burden for Construction Contractors

Last reviewed for accuracy: March 2026

You hired a carpenter at $34/hr. He's been on the job 6 weeks, and you estimated his time perfectly — 200 hours, right on budget. You invoiced the client and expected a clean margin. But your carpenter actually cost you $47.80/hr fully burdened — $13.80/hr more than you priced. Across 200 hours, that's $2,760 that never appeared in your estimate and silently ate your profit. On 8 similar jobs this year? That's $22,080 in margin you left on the table — not because you lost bids, not because materials ran over, but because you estimated labor using the wrong number. This guide shows you how to calculate the true fully-burdened cost of any employee, so you stop building that invisible loss into every bid you write.

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Real-World Reality Check

The Invisible $22,080 — A Real Labor Burden Audit

A Texas-based framing contractor ran 8 residential jobs in 2025, all estimated using bare wage rates. His lead carpenter was costed at $34/hr. His actual burdened rate — including FICA, workers' comp (9% framing rate), general liability, and PTO — was $47.80/hr. The gap was $13.80/hr across an average 200 hours per job. Across 8 jobs, $22,080 vanished from his estimated margin before a single invoice dispute or material overrun.

Bare Wage Rate

$34.00/hr

True Burdened Rate

$47.80/hr

Gap Per Job

$2,760

Annual Leak (8 jobs)

$22,080

What Is Labor Burden?

Labor burden includes all the additional costs beyond base wages that an employee incurs:

Payroll taxes — FICA (7.65%), FUTA, SUTA
Workers’ compensation insurance — Typically 5–15% of payroll for construction trades
General liability insurance — Allocated per employee
Health insurance — Employer-paid portion
Paid time off (PTO) — Vacation, sick days, holidays
Small tools allowance — Tool stipends and equipment wear
Retirement contributions — 401(k) match, if offered

The Labor Burden Formula

Burden Rate % = (Total Burden Costs ÷ Base Wage) × 100
Burdened Rate = Base Wage × (1 + Burden Rate %)

Example calculation for a $35/hr carpenter:

Base wage: $35.00/hr
FICA (7.65%): $2.68/hr
Workers comp (8%): $2.80/hr
Liability insurance (3%): $1.05/hr
Health insurance: $3.50/hr (employer portion)
PTO (5 days/yr ÷ 2,080 hrs): $0.84/hr
Total burden: $10.87/hr
Burdened Rate: $45.87/hr (31% burden rate)

Burden Rates by Trade

Different trades carry different workers’ comp rates based on injury risk:

Trade	WC Rate Range	Typical Burden Rate
Carpenter	6–10%	28–34%
Electrician	4–7%	26–30%
Plumber	5–9%	27–33%
Roofer	15–30%	37–52%
Painter	4–7%	26–30%

Source: BLS Employer Costs for Employee Compensation, 2025.

How to Apply Labor Burden to Estimates

Once you know your burdened rate, use it in every estimate. Never estimate using bare wages.

Wrong: “This job needs 80 carpenter-hours at $35/hr = $2,800”

Right: “This job needs 80 carpenter-hours at $46/hr burdened = $3,680”

The $880 difference on one trade, across dozens of jobs per year, is the difference between profitability and operating at a loss.

Sources & Further Reading

Written by RemodelFin Editorial Team

RemodelFin's editorial team is comprised of former project managers, estimators, and business owners who have collectively managed over $50M in residential remodeling volume across the US. Our content reflects real job data tracked through the RemodelFin platform.

Pro Trade Content · Reviewed by Industry Practitioners

Contractor Q&A

What is a typical labor burden rate for construction?

Labor burden rates in construction typically range from 25% to 50% of base wages, depending on trade, location, and benefits offered. Roofing and structural trades carry higher workers' comp rates (15–30%), pushing burden rates above 40%. Finishing trades like painters and drywall typically run 26–32%.

Should I include health insurance in labor burden?

Yes — if you pay any portion of employee health insurance premiums, that cost must be included in your burdened labor rate. Employer-sponsored health contributions typically add $3–$6/hr to the burdened cost per employee.

Does labor burden apply to subcontractors?

Generally no — if you hire licensed subcontractors on a 1099, labor burden does not apply because they are responsible for their own taxes and insurance. However, if HMRC or IRS reclassifies a worker as an employee, you become liable for the missing burden. Verify classification early.

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