How to Calculate Labor Burden | Reddit & LinkedIn

Labor burden is the total cost of employing a worker beyond the wage you pay them. When you pay someone $30 an hour, the actual cost to your business is higher, because you also pay the employer share of payroll taxes, workers compensation premiums, general liability insurance tied to labor, and any benefits you offer. Labor burden is the sum of all those extra costs, and it is one of the most overlooked numbers in contractor pricing.

Getting burden right matters because your quotes have to cover the real cost of labor, not the wage on the pay stub. A contractor who bids labor at the bare wage is underpricing every job by the full burden amount, which on a labor-heavy trade can be the difference between a healthy margin and a loss. Burden applies to owner-operators too, who carry self-employment taxes and their own insurance even without employees.

Start with the mandatory employer costs. That includes the employer share of Social Security and Medicare, federal and state unemployment taxes, and workers compensation insurance, which for construction trades can be a large number and varies sharply by trade classification and state. Add the portion of your general liability insurance that scales with labor.

Then add the benefits and paid time you provide: health contributions, retirement matching, paid holidays, paid time off, training, and any tools or uniforms you supply. Paid time off is easy to forget but real, because you pay for hours the worker is not on a job. Tally every one of these for a year per worker. The more complete your list, the more accurate your burden rate, and the less likely you are to quietly eat costs you never priced in.

The burden rate is a simple ratio: total annual burden cost divided by total annual wages. Suppose a worker earns $60,000 a year in wages, and you spend $18,000 on their payroll taxes, workers comp, insurance, and benefits. The burden rate is $18,000 divided by $60,000, which is 0.30, or 30%.

To find the fully loaded hourly cost, multiply the base wage by one plus the burden rate. A $30 wage at a 30% burden costs $30 times 1.30, which is $39 an hour. That $39, not $30, is the number your labor pricing must cover before overhead and profit. Run this calculation per worker or per trade classification, because a roofer and an office estimator carry very different workers comp costs and therefore very different burden rates.

For most contractors, labor burden adds 20 to 40% on top of the base wage. The low end applies to lower-risk work with minimal benefits, and the high end to high-risk trades with rich benefits, because workers compensation is the biggest swing factor. A roofing or framing crew can carry workers comp rates several times higher than a low-risk trade, which pushes burden toward or past the top of that range.

Do not borrow a competitor number. Your burden depends on your state, your trade classification, your claims history, and the benefits you choose to offer. Two contractors in the same trade can have meaningfully different burden rates. Calculate yours from your real annual costs, and recalculate when your insurance renews or your benefits change, so the loaded cost inside your quotes stays accurate.

Labor burden is the bridge between a wage and a billable rate. Once you know your fully loaded hourly cost, you layer overhead and profit on top to reach the rate you charge. Skip the burden step and every downstream number is wrong, because you built your price on a cost that is 20 to 40% too low. This is one of the quiet reasons a busy contractor can end a year with no profit.

The practical fix is to bake your loaded labor cost into your estimating templates so you never quote from the raw wage by accident. ContractShield drafts quotes from your own saved rates, so if your templates use loaded labor costs, every AI-drafted quote does too, and every line shows whether its number came from your template or an AI estimate. Pricing labor from the true burdened cost is how the margin you plan for survives contact with the job.