How to Calculate Labor Burden for Contractors | Reddit & LinkedIn
Short answer
Labor burden is the true hourly cost of an employee beyond their base wage. To calculate it, add payroll taxes, workers compensation, insurance, and benefits to the base pay, then divide the fully loaded annual cost by the employee's actual productive hours. The result is the burdened rate you build every estimate on, so your quotes stop quietly losing margin.
- Labor burden is everything an hour of labor costs you beyond the base wage.
- Add employer payroll taxes, workers comp, insurance, and benefits to base pay.
- Divide the loaded annual cost by productive hours, not all 2,080 paid hours.
- Quote from the burdened rate, then add overhead and markup for the billed rate.
- Quoting on base wage alone is one of the most common ways shops lose money.
What is labor burden and why does it matter?
Labor burden is the gap between what you pay an employee and what that employee actually costs you per hour. The base wage is only part of it. Taxes, insurance, benefits, and unproductive time all add real cost that shows up whether or not you account for it in a quote.
If you estimate labor at the base wage, every hour on the job quietly eats margin. A crew member at a given wage can cost 25 to 40 percent more once burden is added. Quoting from the burdened rate is how you make sure a busy month is also a profitable one.
What goes into the burden calculation?
Start with the employer payroll taxes you pay on top of wages: FICA at 7.65 percent, federal unemployment, and your state unemployment rate. Then add workers compensation, which varies widely by trade and state and is one of the largest burden items for field labor.
After that, add the benefits and overhead tied to the person: health coverage, any retirement match, training, uniforms and small tools, and paid holidays and PTO. These are costs you carry for that employee even in hours they are not billing.
How do you find productive hours?
A full-time employee is paid for about 2,080 hours a year, but they do not bill all of them. Subtract holidays, PTO, sick time, training, travel between jobs, shop time, and other non-billable hours. What remains is productive, billable hours.
This step matters because burden has to be recovered over the hours you actually invoice. Spreading the loaded cost across 2,080 hours understates your true rate, because you are not getting paid for all 2,080.
How do you turn burden into a billable rate?
Divide the fully loaded annual cost by productive hours to get the burdened hourly cost. That is what an hour of that crew member truly costs you on a job.
The burdened rate is still only cost. To get the rate you bill, add overhead that is not tied to labor, such as office, vehicles, and software, then add your profit markup. Estimating at the burdened rate plus markup is how a bid covers both the job and the business.
How does software keep your burdened rate in every quote?
Once you have a burdened rate per crew type, the hard part is applying it consistently on every bid. ContractShield stores your labor rates so every AI-drafted estimate prices labor from your real burdened numbers, not a guess.
The AI drafts the line items, but it uses your rates and never invents them. That keeps the margin math you worked out here baked into every quote you send, instead of living in a spreadsheet you forget to open.
Frequently asked questions
What is included in labor burden?
Employer payroll taxes (FICA, FUTA, SUTA), workers compensation, health and retirement benefits, paid time off, training, and small tools. It is every labor cost beyond the base wage.
How much does burden add to a base wage?
It varies by trade and state, but burden commonly adds 25 to 40 percent to the base wage once taxes, workers comp, insurance, and paid time off are included.
Why divide by productive hours instead of 2,080?
Because you only recover burden on hours you actually bill. Dividing by all 2,080 paid hours understates your true cost, since holidays, PTO, and non-billable time are not invoiced.
Is the burdened rate the same as my billing rate?
No. The burdened rate is cost. Your billing rate adds non-labor overhead and profit markup on top of the burdened rate.
How does ContractShield use my burdened rate?
It stores your labor rates and prices every AI-drafted estimate from them, so your margin assumptions carry into every quote automatically.
Quote from your real numbers, every time
ContractShield keeps your burdened rates in every AI-drafted estimate and bills on milestones at 2% per job (1% each side), capped at $250, with no per-lead fees.
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