Greenhouse, Indoor Farming & Agri-Processing worked example

Labor per Tray at 11% setup, break, and travel allowance: a worked example

This worked example runs the labor per tray numbers for a tougher week than the baseline: 11% setup, break, and travel allowance instead of the typical 15%. Estimate labor hours to handle a planned tray count through seeding, spacing, scouting, harvest, or wash for a greenhouse, vertical farm, or microgreens operation, with a setup and break allowance, so supervisors can build the daily crew sheet.

The inputs for this scenario

  • Trays to handle this shift: 240 trays (held at the documented default)
  • Tray-handling rate per operator: 1.5 trays / min (held at the documented default)
  • Setup, break, and travel allowance: 11 % (the input this scenario stresses; the baseline uses 15)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base tray-handling time = trays to handle this shift รท tray-handling rate per operator.
  • Required labor time per shift works out to 178 hr at these inputs, and this is the headline figure for the scenario.
  • Base tray-handling time works out to 160 hr at these inputs.
  • Setup, break, and travel allowance works out to 11 % at these inputs.
  • Tray-handling rate per operator works out to 1.5 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where setup, break, and travel allowance sits at 15% and the headline result is 184 hr, this scenario comes in 3.48% below the baseline at 178 hr.
  • Use it when staffing a propagation, transplant, or harvest shift or when loading labor cost per tray into a crop budget. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Required labor time per shift: 178 hr (headline result)
  • Base tray-handling time: 160 hr
  • Setup, break, and travel allowance: 11 %
  • Tray-handling rate per operator: 1.5 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Labor per Tray calculator, set setup, break, and travel allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.