True Labor Burden Calculator

Why Labor Burden Destroys Remodeling Profits

When a contractor builds an estimate assuming a carpenter costs $35 an hour, they are guaranteeing a massive loss. The **true labor burden** is the hidden cost of putting an employee in the field.

Every hour an employee works, the employer pays mandatory FICA taxes (Social Security and Medicare matching), State and Federal unemployment taxes (SUTA/FUTA), Worker's Compensation insurance based uniquely on the worker's class code, General Liability coverage, and any health or retirement benefits.

How to Calculate Labor Burden

The formula requires taking the gross yearly wage and adding all employer-paid taxes, insurance premiums, and benefit costs, then dividing that total number by the **total workable hours** (usually around 2,000 hours assuming 2 weeks of vacation per 2,080 standard annual availability). If you bill a client simply using the base rate, you are effectively paying the un-captured burden out of your own profit margin.

The Labor Burden Formula & Benchmarks

The mathematical formula to determine your burden rate is: Burden Rate % = (Total Annual Burden Costs ÷ Annual Base Wages) × 100. You then calculate the fully burdened hourly rate using: Burdened Rate = Base Wage × (1 + Burden Rate).

In the construction industry, benchmark labor burden rates typically fall between 25% and 45%. Residential remodelers often see rates around 28% to 38%, while trades with higher injury risks, like roofing, can see burden rates exceed 40% due to elevated workers' compensation premiums.

Real-World Worked Example

Let's look at a realistic scenario for a lead carpenter earning a base wage of $35.00 per hour. When we factor in mandatory FICA (7.65%) and SUTA/FUTA (1.5%), plus a typical workers' compensation rate (8%) and general liability (2%), taxes and insurance add $6.70 per hour. Add health and retirement benefits costing $4.50 per hour. The total true cost to the company is $46.20 per hour. Over a 40-hour week, failing to account for this $11.20 per hour difference results in a silent margin leak of $448 per week, per employee.

When to Use This Calculator

You should run this calculator every time you hire a new employee, when insurance premiums renew, or when updating your estimating templates annually. By consistently using the fully burdened rate in your estimates, you protect your job's net profit from being eroded by hidden employment costs.