Definition
Emergency work percentage measures the proportion of total maintenance labor hours (or work orders) that were emergency (unplanned, immediate-response) work, relative to all maintenance work performed in the period. A high or rising percentage typically signals a reactive maintenance organization, while a low, stable percentage suggests planning and prevention are working.
Key facts
- Calculated as emergency work hours or orders divided by total maintenance work hours or orders for the period.
- A high or rising value typically indicates a reactive maintenance culture, often linked closely to reactive maintenance and PM compliance trends.
- Requires a consistent definition of what counts as "emergency" (e.g., immediate stop required) to be comparable over time.
- Commonly tracked alongside schedule compliance and PM compliance as a set of maintenance-organization health indicators.
How is Emergency work percentage calculated?
Emergency work percentage is calculated by identifying which work orders in a period were classified as emergency (unplanned, requiring immediate response) versus routine planned or scheduled work, then expressing the emergency share as a percentage of total maintenance labor hours or work order count.
What influences Emergency work percentage?
A consistently high emergency work percentage typically indicates that preventive and predictive efforts are not catching problems early enough, forcing reactive intervention; tracking its trend alongside PM compliance and schedule compliance helps distinguish a maturing program from a persistently reactive one.
FAQ
Frequently asked questions
What share of work arises as emergency work?
Emergency work percentage: the proportion of total maintenance labor hours or work orders that were unplanned, immediate-response emergency work, relative to all maintenance work performed in the period.
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