Labor Cost per Unit Calculator
Fully burdened labour cost per unit at a given output rate.
Labour cost per unit
$0.828
- Fully burdened rate
- $28.16
- Labour cost per 100 units
- $82.82
- Burden per hour
- $6.16
The wage on the payslip is not the labour cost. Payroll taxes, benefits, holiday accrual, training and idle time typically add 20 to 40 percent on top of the base rate, and a cost model that uses the bare hourly wage will understate every quote by roughly that amount. This calculator applies a burden percentage and converts the fully loaded hourly cost into a cost per unit at your actual output rate.
The second half of the calculation matters more than most people expect. Cost per unit is inversely proportional to units per hour, so a 15% drop in output raises unit labour cost by 18%. That is why a line running at 80% of its rated speed has a labour cost problem even if nobody was hired or given a raise — productivity and unit cost are the same calculation viewed from two directions.
How the result is calculated
Labour cost per unit = (Wage × (1 + Burden)) ÷ Units per hour- Fully burdened rate = Base hourly wage × (1 + Burden percentage)
- Labour cost per unit = Fully burdened rate ÷ Good units per hour
- Cost per 100 units = Cost per unit × 100
Variables
| Symbol | Meaning | Unit |
|---|---|---|
W | Base hourly wage | currency/hr |
B | Payroll burden | % |
Q | Good units per hour | units/hr |
Worked example
A cell pays $22 per hour. Payroll burden is 28%. The cell produces 34 good units per hour.
- Fully burdened rate = 22 × 1.28 = $28.16 per hour
- Labour cost per unit = 28.16 ÷ 34 = $0.828
- Cost per 100 units = $82.80
Labour cost is $0.83 per unit. If output drops to 29 units per hour — a realistic effect of frequent minor stoppages — the cost rises to $0.97, a 17% increase with no change in wage. That sensitivity is why labour cost per unit is a better productivity metric than headcount.
What this calculation does not cover
- Assumes one operator. For cells with several people working in parallel, divide by the number of operators or sum their burdened rates before dividing by output.
- Output per hour must be good units. Using gross units hides the labour embedded in scrap — those hours were paid for and produced nothing saleable.
- Burden percentages vary widely by country and contract type. Use your actual payroll data rather than an industry average; the difference between 20% and 45% is a material costing error.
- Direct labour only. Supervision, quality, maintenance and material handling are indirect labour and should be recovered through overhead absorption, not through this per-unit figure.
- Does not account for learning curves on new products, where output per hour improves for the first several hundred units.
Frequently asked questions
What should I include in payroll burden?
Employer payroll taxes and social contributions, health and insurance benefits, pension contributions, paid holiday and sick leave, training time, uniforms and PPE, and any shift premiums. The test is simple: if the cost exists only because you employ the person, it belongs in burden. Exclude anything that would be incurred regardless of headcount.
How is labour cost per unit different from labour productivity?
They are inverses of each other. Productivity is units per labour hour; cost per unit is burdened cost divided by units per labour hour. Reporting productivity in units alone hides wage inflation, while reporting cost alone can be distorted by currency or contract changes. Track both.
Should I use rated capacity or actual output for units per hour?
Actual output, measured over a representative period. Rated capacity produces an optimistic cost that will not survive contact with a real quote. If you need a forward-looking figure for a new process, use measured output from a comparable existing process rather than the equipment specification.