The Short Version
Labor is the hardest cost to control in construction and the one most builders price least accurately. Not because they're careless — because the visible number (the hourly wage) is significantly lower than the real number. Every time a builder estimates labor based on wage alone and ignores burden, they're building a gap between what they charge and what it actually costs into every estimate. That gap doesn't show up as a line item anywhere. It just quietly erodes margin on every job that runs as planned — and gets worse on jobs that run long.
Sound Familiar?
Signs your labor costs are underpriced in your estimates:
- You estimate labor based on your workers' hourly wages without adding a burden percentage on top
- Your gross margin looks fine on paper but net income is consistently below your target
- You have trouble explaining why jobs with good material pricing and reasonable labor hours still underperform
- Your workers' comp and payroll tax costs surprise you at year-end instead of being built into every estimate
- Your labor costs per hour in QuickBooks are consistently higher than what you estimated — and you assume it's just overruns
What We Found
What Labor Burden Is and What It Includes
Labor burden is the total cost of employing a worker above and beyond their base wage. It includes every cost that gets triggered by having that person on payroll and on-site. Most builders who haven't run this calculation underestimate it significantly — typically guessing 15–20% when the real number is closer to 28–38%.
Here's the complete burden stack for a typical construction employee:
Mandatory payroll costs (these apply to every employee):
- FICA (Social Security + Medicare): 7.65% of wages — no exceptions, no cap on Medicare
- Federal Unemployment (FUTA): 0.6–6% of first $7,000 in wages per employee — typically 0.6% after state credits for most employers in good standing
- State Unemployment (SUTA): Varies by state and claims history. New employers typically pay 2.5–4.5%. High-turnover contractors can pay 6–8%.
- Workers' Compensation: The single largest burden item for field workers. For residential framing and general carpentry, workers' comp rates typically run $8–$18 per $100 of wages (8–18%). Roofing is higher. Concrete is lower. Your specific rate depends on your classification codes and experience modifier (EMR). A builder with an EMR below 1.0 pays less; above 1.0 pays more.
Optional but common costs:
- Health insurance employer contribution: $200–$600 per employee per month depending on plan and location
- Tool and equipment allowance: $500–$1,500 per employee per year for tool maintenance, replacement, and small equipment
- Paid time off (PTO/holidays): If employees receive paid leave, those hours are paid without generating revenue — typically equivalent to 3–6% of wages
- Vehicle or mileage reimbursement: Varies widely; relevant for builders who pay field staff travel time or mileage
The Workers' Comp Effect
Workers' comp is the most variable and most impactful line in the labor burden calculation. I've worked with builders whose workers' comp costs add 8% to labor and others where it adds 22% — for the same trade, in adjacent counties, because of claims history. If you haven't reviewed your experience modifier in the last 12 months, do it now. A single frequency claim can push your EMR from 0.9 to 1.3 and add $15,000–$30,000 to your annual labor burden on a $500K payroll.
How to Calculate Your True Labor Burden Rate
Here's the calculation I walk every new client through. It takes about 30 minutes the first time and should be updated annually.
Step 1: Pull your last 12 months of employer-side labor costs from QuickBooks
You want the total of every employer-paid cost related to employees. Run a P&L for the last 12 months and sum these categories:
- Total gross wages paid (this is your base)
- Employer FICA paid
- FUTA and SUTA paid
- Workers' compensation premiums paid
- Employer health insurance contributions
- Any tool, equipment, or vehicle allowances paid to field staff
Step 2: Calculate the burden percentage
Burden percentage = (Total burden costs ÷ Total gross wages) × 100
Example: If you paid $420,000 in gross wages and $145,000 in burden costs, your burden rate is 34.5%. That means for every $1.00 in wages you pay, your true cost to the business is $1.345.
Step 3: Convert to a per-hour all-in cost
Take the employee's hourly wage and multiply by (1 + burden rate). A framer at $28/hour with a 34.5% burden rate has a true cost of $28 × 1.345 = $37.66 per hour. That's the number that belongs in your labor estimate — not $28.
Step 4: Build the rate into your estimating system
In JobTread, you can set labor cost rates at the company level. Update your labor cost inputs to reflect the all-in burdened rate by trade or by individual employee. This change immediately improves the accuracy of every Budget vs. Actuals comparison you run — because the estimated labor cost now matches what you're actually paying.
The $50K+ Problem Hidden in "Reasonable" Estimates
Most builders in the $1M–$2M range have 4–6 field employees plus themselves on tools some portion of the time. Let's run the math on what underpricing labor by $10/hour actually costs.
5 employees × 1,800 productive field hours/year × $10/hour underpricing = $90,000 in annual margin gap. That's not profit you lost because of a bad job or a difficult client. It's margin you never had because the estimate was built on the wrong number. On jobs where everything else goes exactly to plan, you're still underperforming your target margin by a predictable amount — and you'll never find the root cause by analyzing individual jobs, because it's a systemwide input error.
Fixing the labor burden rate in your estimating system is one of the highest-ROI changes a builder can make. It doesn't require any operational changes, no new hires, no process overhaul. It requires 30 minutes to run the calculation and one update to your estimating inputs.
The Go First cost code audit and cleanup includes a full labor burden analysis as a standard component — because labor is where most of the systematic estimating gaps live. If you've been on JobTread for 12+ months and haven't validated your labor cost inputs against actual burden data, that's the most likely explanation for persistent margin underperformance.
About Grant Fuellenbach
Grant Fuellenbach is the founder of Go First Consulting. He has worked with 312+ residential builders, driving $5.3M+ in measurable client impact across seven service lines — including job costing, cost code structuring, and estimating systems. Book a strategy call to find out whether your labor rates are costing you margin on every job.
Find Out If Your Labor Rates Are Costing You Margin
A strategy call identifies whether your estimating inputs — including labor burden — match what you're actually paying, and what to fix first.
Book a Strategy Call →Frequently Asked Questions
Labor burden in construction is the total employer-side cost of an employee above their base wage. It includes payroll taxes (FICA, FUTA, SUTA), workers' compensation premiums, employer health insurance contributions, paid time off, and tool or equipment allowances. For most residential construction trades, total burden adds 28–38% to the base wage. A framer earning $28/hour costs the employer $36–$39 per hour in true all-in labor cost.
Add up all employer-side labor costs for the last 12 months: total gross wages, employer FICA, FUTA, SUTA, workers' comp premiums, health insurance contributions, and tool allowances. Divide total burden costs by total gross wages. The result is your burden rate percentage. Multiply any employee's hourly wage by (1 + burden rate) to get the true cost per hour. Update your estimating system to use this burdened rate instead of base wages.
Workers' compensation rates for residential construction trades typically run 8–18% of wages depending on trade classification and your experience modifier (EMR). Framing and general carpentry usually fall in the 10–15% range. Roofing is higher, often 15–25%. Your actual rate is set by your state's NCCI classification system and adjusted by your individual EMR — an EMR below 1.0 lowers your rate, above 1.0 raises it. Review your workers' comp audit report annually to verify your classifications are correct.
Yes, always. Every hour of labor you estimate should be priced at the true burdened cost — base wage plus all employer costs — not just the wage. Builders who estimate with wage-only rates are systematically underpricing every job they bid. The gap between estimated and actual labor cost doesn't show up as overruns on individual jobs; it shows up as persistently lower-than-expected net income across all jobs.
In JobTread, go to Settings and update your labor cost rates to reflect the all-in burdened rate for each trade or employee type. When you create a cost code for labor in an estimate, the system uses the rate you've configured. Most builders who have been on JobTread for more than a year without updating these rates are using the original numbers from setup — which were usually just hourly wages. Verify your labor cost rate inputs against your actual burden calculation at least once per year.
