Manufacturing & IndustrialLabor / Unit
Labor Cost Per Unit Calculator
Calculate direct labor cost allocated per finished unit and quantify the labor cost penalty caused by quality defects and scrap.
Standard Labor Time & Assembly Rate
Labor Cost per Unit
—
burdened assembly cost
Total Man-Hours / Unit
—
effective operator hours
Units per Hour (UPH)
—
cell throughput rate
Labor Cost Per Unit Formula
Labor Cost Per Good Unit = Total Direct Labor Expense ÷ Good Units Produced- Gross Output: Total units assembled during the paid labor hours.
- Salable Good Output: Units that pass inspection and are available for sale.
- Defect Labor Penalty: Extra labor cost absorbed by good parts due to scrapped work.
Step-by-Step Worked Example
Scenario: Assembly team payroll of $12,000 producing 2,400 units with 100 rejects
Calculation Steps:
- Labor Cost Per Gross Unit = $12,000 / 2,400 = $5.00 / unit
- Labor Cost Per Good Unit = $12,000 / 2,300 = $5.22 / unit
- Defect Labor Penalty = $5.22 - $5.00 = +$0.22 / good unit
- Labor Cost Per Minute = $12,000 / (2,400 × 3 min) = $1.67 / minute
Result: Labor cost per good unit is $5.22. Quality rejects add a $0.22 labor penalty to each salable product.
How to Use This Calculator
- 1Enter total direct labor payroll for the production run.
- 2Input total units assembled and number of good units passing inspection.
- 3Optionally specify cycle time per unit in minutes.
Assumptions & Limitations
- Only direct production operators are included (supervisor overhead is excluded).
- Defective parts are non-reworkable.
Frequently Asked Questions
How can plant managers lower labor cost per unit?
By implementing line balancing, automating repetitive assembly tasks, reducing cycle times, improving first-pass quality yield, and providing standardized work training.
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