Social Security 6.2% + Medicare 1.45%
Varies by trade and state
Vacation + sick + holidays
401k match, training, etc.
Labor Burden Breakdown
Burdened Labor Rate Guide
How to calculate true labor costs, burden components by trade, and typical multipliers for contractor bidding.
What Is a Burdened Labor Rate?
A burdened labor rate is the true hourly cost of an employee, including base wages plus all employer-paid expenses layered on top. When you pay someone $30/hr, your actual cost is closer to $40-$45/hr once payroll taxes, insurance, and benefits are added.
For contractors, using the raw wage rate when estimating jobs leads to chronic underbidding. Every hour you bill at base rate, you are absorbing the burden costs out of your profit margin. Accurate bidding starts with knowing your real per-hour cost before you apply any markup.
- Base wage: What the employee takes home per hour
- Burden: All employer costs stacked on top of base wage
- Burdened rate: Base + burden, the number to use in job costing and estimating
Typical labor burden runs 25-50% above base wages depending on trade, state workers comp rates, and the benefits package offered. A $28/hr carpenter often costs $38-$42/hr burdened.
Key Takeaways
- Burdened rate includes wages plus all employer-paid costs
- Using raw wages to estimate leads to losing money on every job
- Labor burden typically adds 25-50% above the base hourly rate
Common Labor Burden Components
Labor burden is made up of several mandatory and optional cost categories. Every contractor pays the mandatory items; benefits vary based on what you offer.
- FICA (7.65%): Social Security (6.2%) and Medicare (1.45%), mandatory on all W-2 wages
- Federal Unemployment (FUTA, 0.6%): Paid on the first $7,000 of wages per employee per year
- State Unemployment (SUTA, 1-5%): Varies significantly by state and your claims history
- Workers Compensation (2-20%+): Highest variable cost; roofing and framing carry rates 4-6x higher than low-hazard trades
- Health Insurance ($300-$800/mo employer share): Major cost for crews; many small contractors skip this and pay a recruiting penalty
- PTO and Holidays: Time paid but not worked directly reduces your effective hours. 15 paid days per year costs roughly 5.8% of base wages
- Retirement (401k match, 2-4%): Optional but increasingly important for retaining skilled tradespeople
- Training and Safety (0.5-2%): OSHA compliance, certifications, tool training
Adding it all up, most contractors carry a burden rate between 28-45% above base wages for non-union field crews.
Key Takeaways
- FICA is a flat 7.65% on all W-2 wages, no exceptions
- Workers comp is the biggest variable -- roofing rates can exceed 20%
- Every paid day off that is not worked increases your effective hourly burden
Burden Rates by Construction Trade
Labor burden multipliers vary widely by trade, primarily driven by workers compensation classification codes. High-hazard trades pay substantially more per dollar of wages for WC coverage.
- General carpentry / framing: 1.30-1.45x multiplier (WC rates 8-14%)
- Roofing: 1.40-1.60x multiplier (WC rates 15-25%, some states higher)
- Concrete and masonry: 1.30-1.45x multiplier (WC rates 8-13%)
- Electrical: 1.28-1.40x multiplier (lower WC rates, often 4-8%)
- Plumbing and HVAC: 1.28-1.40x multiplier (moderate WC, 5-9%)
- Painting: 1.28-1.38x multiplier
- Union trades: 1.50-1.85x multiplier (higher base wages, defined benefit pensions, union health plans)
Non-union commercial contractors typically land in the 1.30-1.50x range for field labor. Residential remodelers often run 1.28-1.42x depending on benefits offered. Union shops calculating prevailing wage jobs should plan for 1.55-1.80x or higher.
Key Takeaways
- Most non-union trades fall between 1.25x and 1.50x burden multiplier
- Roofing carries the highest workers comp rates in construction
- Union labor multipliers are typically 1.55-1.85x due to benefit fund contributions
How to Use This Calculator
Enter the Base Hourly Wage
Start with the employee's base pay rate before any burden. This is the gross hourly rate you agreed to pay, not the take-home amount.
Set Your Payroll Tax and Workers Comp Rates
FICA defaults to 7.65% (the mandatory employer share). Enter your workers comp rate from your insurance policy. Rates vary significantly by trade and state.
Add Health Insurance, PTO, and Benefits
Enter your monthly employer contribution toward health insurance, the number of paid days off per year, and any other monthly benefit costs such as 401k match or training.
Review the Burdened Rate and Multiplier
The calculator shows your true cost per hour, the burden multiplier, total annual burden per employee, and a cost breakdown chart. Use the burdened rate when building your labor estimates.
Burdened Labor Rate Formulas
Burdened Rate = Base Wage x Burden Multiplier
Burden Multiplier = (Annual Base + Total Burden) / Annual Base
Total Burden = FICA + Workers Comp + Health + PTO Cost + Benefits
FICA Cost = Annual Base x 7.65%
Workers Comp Cost = Annual Base x WC Rate
Health Annual = Monthly Premium x 12
PTO Cost = Base Wage x 8 hrs x PTO Days
Effective Hours = (260 - PTO Days) x 8Where:
- Base Wage
- = Gross hourly pay rate agreed with the employee
- Annual Base
- = Base wage x 2,080 hours (standard work year)
- FICA
- = Employer share: Social Security 6.2% + Medicare 1.45% = 7.65%
- Workers Comp Rate
- = Your insurance rate as a percentage of payroll, varies by trade and state
- Effective Hours
- = Actual productive hours after subtracting PTO and holidays
- Burden Multiplier
- = Factor applied to base wage to get total cost per hour (e.g., 1.38x)
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Frequently Asked Questions
What is a burdened labor rate?
A burdened labor rate is the total employer cost per hour for a worker, including their base wage plus all associated payroll taxes, insurance, benefits, and paid time off costs. If you pay someone $30/hr, your burdened rate might be $40-$44/hr once FICA, workers comp, health insurance, and PTO are factored in. Using the burdened rate (not the base wage) when estimating jobs ensures your labor costs are fully recovered in every bid.
What is a typical labor burden percentage for contractors?
Most non-union contractors carry a labor burden of 28-45% above base wages. The burden multiplier typically falls between 1.28x and 1.45x for residential and light commercial work. Roofing crews often run 1.40-1.60x due to high workers comp rates. Union shops on prevailing wage jobs commonly reach 1.55-1.85x or higher when pension and health fund contributions are included. Your actual number depends on your state, trade, and benefit offerings.
How do I calculate the burdened labor rate?
The formula is: Burdened Rate = Base Wage x Burden Multiplier, where Burden Multiplier = (Annual Base Pay + Total Annual Burden) / Annual Base Pay. Total burden includes: FICA (7.65% of wages), workers comp (your rate x wages), health insurance (monthly x 12), PTO cost (wage x 8 x PTO days), and other benefits (monthly x 12). Divide total burden by effective work hours to get burden per hour.
What workers comp rate should I use?
Use the rate from your actual workers compensation insurance policy, stated as a percentage of payroll. Common ranges by trade: electrical (4-8%), plumbing/HVAC (5-9%), carpentry/framing (8-14%), concrete (8-13%), roofing (15-25%). Your rate will also depend on your claims history (experience modification rate). Check your policy declarations page for the exact rate by job classification code.
Why do effective work hours matter for calculating burden?
You pay wages for all hours, but employees only produce billable work during hours actually worked. A worker with 15 paid days off works about 1,960 hours per year instead of 2,080. The total annual burden is spread across only those productive hours. More PTO means fewer effective hours, which raises the burden cost per hour even if the total annual cost stays the same. The calculator uses effective hours (260 minus PTO days, times 8) to give you the accurate per-hour burden figure.
Should I use the burdened rate or add burden as a separate line item in my bids?
Both approaches work. Most contractors prefer the burdened rate method: multiply hours by the burdened hourly rate to get total labor cost, then apply your markup to the whole number. This keeps estimates clean and ensures burden is always captured. The separate line item approach works for detailed cost-plus contracts where the client wants to see cost components broken out. Either way, make sure burden is in the bid somewhere. Leaving it out is one of the most common reasons contractors underestimate jobs.
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