Leather, Footwear & Accessories Manufacturing worked example

Stitching Labor per Pair at 11% allowance for fatigue and changeovers: a worked example

Suppose allowance for fatigue and changeovers falls to 11%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate total stitching labor hours needed for a production batch by combining pairs to stitch, standard minute value (SMV) per pair, and allowances for thread changes, bobbin refills, and minor delays.

The inputs for this scenario

  • Pairs of uppers in the batch: 500 pairs (held at the documented default)
  • Stitching station output rate: 5 pairs / hr (held at the documented default)
  • Allowance for fatigue and changeovers: 11 % (the input this scenario stresses; the baseline uses 15)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base stitching time = pairs in batch / stitching rate.
  • Required stitching time (with allowances) works out to 111 hr at these inputs, and this is the headline figure for the scenario.
  • Base stitching time works out to 100 hr at these inputs.
  • Delay allowance applied works out to 11 % at these inputs.
  • Stitching rate (pairs/hr) works out to 5 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where allowance for fatigue and changeovers sits at 15% and the headline result is 115 hr, this scenario comes in 3.48% below the baseline at 111 hr.
  • It computes base stitching hours from pairs over rate, then inflates them by a delay allowance to give required stitching time. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • Required stitching time (with allowances): 111 hr (headline result)
  • Base stitching time: 100 hr
  • Delay allowance applied: 11 %
  • Stitching rate (pairs/hr): 5 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Stitching Labor per Pair calculator, set allowance for fatigue and changeovers to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.