ERP & MRP Planning worked example

Labor Plan Requirement with planned production units of 3,000 units: a worked example

This scenario runs the labor plan requirement calculation on the strong side: planned production units of 3,000 units, with every other input held at its documented default. a planner needs labor hours required by the production plan

The inputs for this scenario

  • Planned production units: 3,000 units (raised for this scenario; the documented default is 1,200)
  • Standard labor hours per unit: 0.42 labor-hr / unit (unchanged)
  • Efficiency or product-mix factor: 1.08 x (unchanged)
  • Indirect labor multiplier: 1.15 x (unchanged)

Working through the calculation

  • Applying the documented formula (Labor requirement = planned production units × standard labor hours per unit × efficiency/product-mix factor × indirect labor multiplier) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,565 hr for required labor hours, the number this scenario is built around.
  • At this operating point the engine returns 1,361 labor-hr for direct labor hours before indirect multiplier.
  • At this operating point the engine returns 1.15 x for indirect labor multiplier.
  • At this operating point the engine returns 1,260 labor-hr for planned units × standard labor hours.

How this compares with the baseline

  • Against the tool's baseline example, where planned production units sits at 1,200 units and the headline result is 626 hr, this scenario comes in 150% above the baseline at 1,565 hr.
  • Use it when sizing crews, planning overtime, or checking that a production plan can be staffed before releasing it to the floor. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Required labor hours: 1,565 hr (headline result)
  • Direct labor hours before indirect multiplier: 1,361 labor-hr
  • Indirect labor multiplier: 1.15 x
  • Planned units × standard labor hours: 1,260 labor-hr

Run it with your numbers

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

Last reviewed 2026-05-12.