Workforce, Labor Standards & Skills Planning worked example

Line Labor Balance at 98% line balance efficiency: a worked example

What does the result look like when line balance efficiency reaches 98%? The full calculation is worked below with real intermediate numbers. An industrial engineer evaluating how much imbalance idle time inflates labor cost on a multi-station assembly line.

The inputs for this scenario

  • Total Station Labor Hours: 96 hrs (unchanged)
  • Loaded Labor Rate: 34 $/hr (unchanged)
  • Line Balance Efficiency: 98 % (raised for this scenario; the documented default is 85)
  • Changeover Labor Cost: 450 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Balanced labor cost = station hours x loaded rate x balance efficiency% + changeover labor) to the inputs above produces each figure below.
  • At this operating point the engine returns 3,649 $ for total line labor balance cost, the number this scenario is built around.
  • At this operating point the engine returns 38.01 $ / piece for line labor balance cost per unit.
  • At this operating point the engine returns 3,199 $ for variable line labor balance cost.
  • At this operating point the engine returns 450 $ for fixed line labor balance adder.

How this compares with the baseline

  • Against the tool's baseline example, where line balance efficiency sits at 85% and the headline result is 3,224 $, this scenario comes in 13.16% above the baseline at 3,649 $.
  • A figure at this level is achievable when line balance efficiency is genuinely sustained, not just peaked for a shift. It applies balance efficiency as a single multiplier and does not identify which station is the bottleneck or model the takt-time constraint that caused the imbalance.

Results at a glance

  • Total line labor balance cost: 3,649 $ (headline result)
  • Line labor balance cost per unit: 38.01 $ / piece
  • Variable line labor balance cost: 3,199 $
  • Fixed line labor balance adder: 450 $

Run it with your numbers

  • Every input above is editable in the live Line Labor Balance calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.