What goes into the allowance?

Setup, staging, tool changes and minor delays that a timed pace study does not capture. At the default 12%, 27.78 base hours become 31.11 required hours, so the allowance adds 3.33 hours and about 10.7% of the total.

Why are minutes per unit the key figure?

Labor standards and quotes are usually stated per unit, so minutes per unit is the comparable number. The hour rows show where the time goes; the cost row prices it at your loaded rate.

Where does the loaded labor rate come from?

Wages plus payroll taxes, benefits, shift premiums and paid breaks for one assembly hour. Your payroll system can supply it; if a machine rate already includes labor, enter only the labor share.

What if the study pace is not repeatable?

Use a pace measured across several lots, not one clean run. Slow the pace for a learning curve on a new product, then rerun the study after any process or station change.

Consumer Goods & Durable Products Manufacturing calculator

Assembly Labor per Unit Calculator

Turn a timed build into the labor content of one unit: base hours at the demonstrated pace, an allowance for setup and delay, and loaded labor cost. Compare minutes per unit with your target before you quote.

What this calculator does

Labor hours, minutes per unit and assembly cost for a timed build, plus the gap to your labor target.

Formula used

Base labor hours = product units ÷ demonstrated build pace
Allowance hours = base labor hours × allowance ÷ 100
Required labor hours = base hours + allowance hours
Labor minutes per unit = required labor hours × 60 ÷ product units
Assembly labor cost = required hours × loaded rate; minutes gap = target minus minutes per unit

Inputs explained

Product Units in the Labor Study: Finished units timed in the assembly labor study.
Demonstrated Build Pace: Units the line completes per hour during the timed study.
Setup, Staging and Delay Allowance: Allowance on base hours for setup, staging and minor delays.
Loaded Assembly Labor Rate: Wages, payroll taxes and benefits per assembly hour.
Target Labor Minutes per Unit: Labor minutes per unit this study is measured against.

How to use the result

Best suited to costing a new product before quoting, checking a station against its labor standard, testing whether a faster pace pays.
Excludes rework, inspection, packaging and labor outside the timed assembly station. A single blended pace hides line balance losses between stations.

Current U.S. benchmarks

As of Sep 2026, average hourly earnings in U.S. manufacturing are $30.21 (BLS), up 3.4% from a year earlier. Burdened shop rates typically run 1.3 to 1.8 times earnings once benefits and overhead are loaded.

Common questions

What goes into the allowance? Setup, staging, tool changes and minor delays that a timed pace study does not capture. At the default 12%, 27.78 base hours become 31.11 required hours, so the allowance adds 3.33 hours and about 10.7% of the total.
Why are minutes per unit the key figure? Labor standards and quotes are usually stated per unit, so minutes per unit is the comparable number. The hour rows show where the time goes; the cost row prices it at your loaded rate.
Where does the loaded labor rate come from? Wages plus payroll taxes, benefits, shift premiums and paid breaks for one assembly hour. Your payroll system can supply it; if a machine rate already includes labor, enter only the labor share.
What if the study pace is not repeatable? Use a pace measured across several lots, not one clean run. Slow the pace for a learning curve on a new product, then rerun the study after any process or station change.

Last reviewed 2026-10-02.