How do you calculate contractor labor cost?

Multiply quoted hours by the hourly rate and by billable utilization, then add the mobilization fee. With 320 hours at $65/hr, 88% utilization, and a $2,500 fee, that is 320 x 65 x 0.88 + 2,500 = $20,804 total.

What is a good effective cost per hour for contract labor?

There is no universal figure, but the effective rate should stay close to the quoted rate. In the example the effective cost is $65.01/hr, which is above the $65 headline rate because the mobilization fee and utilization loss are baked in.

Why is the effective rate higher than the quoted rate?

The mobilization fee spreads a fixed charge across every hour, and utilization below 100% means you pay for hours the crew is not directly productive. Both push the effective cost above the sticker rate.

Should I include the mobilization fee in the comparison?

Yes. The $2,500 fixed adder is real cash you commit regardless of hours worked, and excluding it understates the true cost of the contractor by that full amount on short jobs.

Contractor vs in-house labor: which is cheaper?

Compare the contractor's effective cost per hour against your fully loaded internal rate including benefits, overhead, and idle time. Contractors often win on short, spiky demand; in-house usually wins on sustained volume where the mobilization fee has nowhere to amortize.

What billable utilization should I assume?

Use the contractor's realistic on-tool percentage, typically 80-90% for skilled trades once you subtract travel, safety briefings, and material waits. The example uses 88%.

Workforce, Labor Standards & Skills Planning calculator

Contractor Labor Comparison Calculator

The Contractor Labor Comparison estimates the true landed cost of bringing in outside labor by folding hourly rate, realistic billable utilization, and one-time mobilization charges into a single total and an effective cost per contract hour. Plant managers, maintenance leads, and procurement buyers use it when weighing a staffing agency, a turnaround crew, or a specialty contractor against in-house headcount. It matters because the headline hourly rate almost never reflects what you actually pay: idle time, travel, and setup fees quietly inflate the real number. Running the comparison before you sign keeps quotes honest and makes the buy-versus-build decision defensible.

What this calculator does

Compare the true delivered cost of an outside contractor against in-house labor by accounting for rate, productive utilization, and mobilization.
An operations lead deciding whether to outsource a specialized maintenance overhaul to a contractor or pull it in-house.
It computes total contractor labor cost from quoted hours, hourly rate, billable utilization, and a fixed mobilization fee, then divides by quoted hours to give an effective cost per hour.

Formula used

Contractor cost = contract hours x hourly rate x billable utilization% + mobilization fee
Effective cost per hour = total contractor cost / contract hours quoted

Inputs explained

Contract Hours Quoted:
Contractor Hourly Rate:
Billable Utilization:
Mobilization Fee:

How to use the result

Use it when evaluating a contractor quote for a shutdown, capital install, or overflow production and you need an apples-to-apples cost per hour to compare against loaded internal labor.
It treats utilization as a flat multiplier and does not model overtime tiers, per-diem escalation, or productivity differences between the contract crew and your own operators.

Current U.S. benchmarks

As of May 2026, U.S. manufacturing runs at 75.6% of capacity (Federal Reserve via FRED), up 0.2 points from a year earlier. Enter your own plant's utilization; the national figure is a reference point for how loaded the industry is.
Manufacturing hourly earnings average $30.27 (BLS, Jun 2026), up 4.4% from a year earlier. Median machinist pay is $28.24/hr (OEWS 2025), with state medians on each state page. Manufacturers have 529k open positions nationally (BLS JOLTS).

Common questions

How do you calculate contractor labor cost? Multiply quoted hours by the hourly rate and by billable utilization, then add the mobilization fee. With 320 hours at $65/hr, 88% utilization, and a $2,500 fee, that is 320 x 65 x 0.88 + 2,500 = $20,804 total.
What is a good effective cost per hour for contract labor? There is no universal figure, but the effective rate should stay close to the quoted rate. In the example the effective cost is $65.01/hr, which is above the $65 headline rate because the mobilization fee and utilization loss are baked in.
Why is the effective rate higher than the quoted rate? The mobilization fee spreads a fixed charge across every hour, and utilization below 100% means you pay for hours the crew is not directly productive. Both push the effective cost above the sticker rate.
Should I include the mobilization fee in the comparison? Yes. The $2,500 fixed adder is real cash you commit regardless of hours worked, and excluding it understates the true cost of the contractor by that full amount on short jobs.
Contractor vs in-house labor: which is cheaper? Compare the contractor's effective cost per hour against your fully loaded internal rate including benefits, overhead, and idle time. Contractors often win on short, spiky demand; in-house usually wins on sustained volume where the mobilization fee has nowhere to amortize.

Last reviewed 2026-05-12.