Calculating Labor Burden for Your Construction Business

TL;DR

• Your employee’s hourly wage is not their real labor cost.
• Labor burden includes payroll taxes, insurance, PTO, training, benefits, and non-billable time—and it quietly eats profit if you ignore it.
• To calculate true labor cost, you must start with actual production hours, not paid hours.
• In the example, a $20/hour employee actually costs $28.47/hour just to break even.
• Labor burden gets you to breakeven—markup is still required to make a profit.
• If you’re busy but broke, inaccurate labor burden is often the reason.

NEXT STEPS: Schedule your Operational Assessment and we'll show you exactly what your base labor rate should be.

Labor is one of the biggest costs in a construction business.

But for many contractors, it’s also the most misunderstood.

If you’re only using hourly wages when estimating jobs—and ignoring labor burden—you may be working harder on every project and still losing money.

That’s not because you’re bad at building.
It’s because your numbers are lying to you.

To stay profitable and get beyond just breaking even, every contractor must understand labor burden—what it is, how to calculate it, and how to apply it correctly in estimates.

This article is part of my series published at Fine Homebuilding.

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What Is Labor Burden (In Plain English)?

Labor costs fall into two categories:

• Direct labor costs
• Indirect labor costs

Direct Labor Costs

This is the easy part.

Direct labor is the hourly wage you pay an employee.

If Tim earns $20 per hour, that’s his direct labor cost.

Indirect Labor Costs (The Hidden Costs)

Indirect labor costs are everything it costs to employ Tim—beyond his paycheck.

These costs exist whether you track them or not.

Common indirect labor costs include:

• Workers’ compensation insurance
• General liability insurance
• Payroll taxes
• Vehicle and equipment insurance
• Communication expenses (phones, software, devices)
• Employee benefits (health, retirement, bonuses)
• Paid time off (holidays, vacation, sick days)
• Training and professional development
• Company apparel and safety gear

When these costs aren’t included in your estimates, they don’t disappear—they quietly eat your profit.

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What Labor Burden Really Means

Labor burden is the total indirect cost of labor expressed as a percentage of direct wages.

The formula looks like this:

Indirect Labor Costs ÷ Direct Labor Costs = Labor Burden %

In simple terms:

For every $1 you pay an employee, it costs you more than $1 to employ them.

If you don’t know that number, you don’t know your real labor cost.

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Step 1: Start With Time (Not Just Pay Rate)

Let’s use a simple example.

Tim earns $20 per hour and works full-time.

Total Paid Hours Per Year

40 hours per week × 52 weeks = 2,080 hours

Annual Wages

$20 × 2,080 = $41,600 per year

So far, so good.

But Tim isn’t producing billable work for all 2,080 hours.

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Step 2: Subtract Paid Time Not Worked

Paid time off still costs you money—even though no production happens.

Let’s assume:

• 6 paid holidays = 48 hours
• 5 PTO days = 40 hours
• 2 training days = 16 hours

That’s 104 hours paid but not worked.

Available Working Hours

2,080 – 104 = 1,976 hours

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Step 3: Account for Non-Production Time

Even on working days, employees don’t produce billable work 100% of the time.

Meetings.
Paperwork.
Shop time.
Maintenance.

Let’s assume Tim spends 2 hours per week on non-billable tasks.

Over the year:

49 working weeks × 2 hours = 98 hours

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Step 4: Determine Total Production Hours

Now subtract non-billable time:

1,976 – 98 = 1,878 production hours per year

That’s the number that actually matters.

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Step 5: Add Indirect Labor Costs

Now we include the real costs of employing Tim.

Example indirect costs:

• Payroll taxes: $3,744
• Workers’ comp: $4,160
• Uniforms: $200
• Tools & maintenance: $600
• Company events: $240
• Raises/bonuses: $1,248
• Training: $175
• Health insurance reimbursement: $1,500

Total indirect costs: $11,867

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Step 6: Calculate Tim’s True Hourly Cost

Total Cost to Employ Tim

$41,600 wages + $11,867 indirect costs = $53,467

Now divide by actual production hours:

$53,467 ÷ 1,878 hours = $28.47 per hour

Tim earns $20/hour—but costs you $28.47/hour to employ.

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What This Number Really Tells You

This means your labor burden factor is:

$28.47 ÷ $20 = 1.42

In other words:

For every $1 you pay Tim, it costs you an additional $0.42 just to break even.

This does not include profit.

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Don’t Forget Markup

Labor burden only gets you to breakeven.

To stay in business, you still need markup.

If your required markup is 50%:

$20 × 1.42 × 1.5 = $42.60 per hour

That’s the price you should be selling Tim’s labor for—not $20, not $25, and not “whatever the market will take.”

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Why This Matters More Than Ever

Labor burden mistakes don’t show up right away.

They show up as:

• Jobs that look profitable but aren’t
• Cash flow stress
• Owner burnout
• “We’re busy but broke” syndrome

Understanding labor burden turns confusion into clarity.

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Final Thought: Burden vs Relief

The definition of burden is a heavy load.

But knowing your labor burden does the opposite.

It brings:

• Relief
• Confidence
• Better pricing decisions
• Healthier margins

And that’s how construction businesses survive—and grow.

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Want Help Getting This Right?

Labor burden is only useful if it’s built into your estimating, job costing, and accounting systems.

And these systems should be integrated together so the your financial data flows smoothly.

The Data Mule Agency will integrate your accounting, job costing, and project management systems.

So you can adjust your estimating system to protect your profits and increase your margins.

Data Mule Agency handles all the back-end office stuff you hate and you're no good at.

We're nerds for this stuff, and we love it.