# Downtime

Operations · `Downtime` · verification: source checked

Downtime is production time lost due to planned or unplanned stoppages. Planned downtime covers scheduled stops such as beginning-of-shift production meetings, changeovers to other products, and scheduled maintenance. Unplanned downtime covers stops caused by breakdowns, machine adjustments, material shortages, and absenteeism.

## Specification

| Property | Value |
|---|---|
| Kind | metric |

## Connected

- Related: [Overall Equipment Effectiveness](https://machineschema.com/operational/oee.md)

## Study notes

- Downtime is split into two categories: planned and unplanned.
- Planned downtime examples: beginning-of-the-shift production meetings, changeovers to produce other products, scheduled maintenance.
- Unplanned downtime examples: breakdowns, machine adjustments, materials shortages, absenteeism.
- The document lists it alongside Overall Equipment Effectiveness and Total Productive Maintenance; Total Productive Maintenance has no matching reference entry.

## Sources

1. [Downtime - Lean Enterprise Institute](https://www.lean.org/lexicon-terms/downtime/) (accessed 2026-10-25)

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JSON: https://machineschema.com/operational/downtime.json  
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