Planned Maintenance Percentage
Planned maintenance percentage is the share of total maintenance labor hours spent on work that was prepared before execution.
What this term means in maintenance
Planned maintenance percentage is the share of total maintenance labor hours spent on work that was prepared before execution.
Planned-maintenance-percentage formula
Planned maintenance percentage = Planned maintenance hours ÷ Total maintenance hours × 100
Practical example
A maintenance team records 240 planned labor hours from a total of 320 maintenance hours.
Planned maintenance percentage = 240 ÷ 320 × 100 = 75%
The remaining 25% represents work that was not planned according to the organization’s definition.
What counts as planned work
Planned work normally has:
- An approved scope
- Labor and duration estimates
- Required skills
- Parts and materials
- Tools and access requirements
- Safety requirements
- Work instructions or method
- A clear completion expectation
Why the metric matters
A low percentage may indicate excessive emergency work, weak planning capacity, unreliable equipment, or poor defect detection. A very high percentage should still be reviewed to ensure urgent work is not being hidden or reclassified.
Planned versus scheduled
Planned work and scheduled work are related but different. A job can be placed on a schedule without being properly prepared.
Common mistake
Counting every PM work order as planned regardless of job readiness can make the result look stronger than the actual planning process.
Related concepts
Related maintenance terms
Keep exploring connected CMMS, reliability, and maintenance planning terms.
Preventive Maintenance
Preventive maintenance is planned work performed at defined time, usage, or meter intervals to reduce the likelihood of equipment failure or deterioration.
Preventive Maintenance Compliance
Preventive maintenance compliance is the percentage of scheduled preventive maintenance tasks completed within the organization’s defined on-time window.
Maintenance Backlog
Maintenance backlog is approved maintenance work that has not yet been completed, commonly measured by job count, estimated labor hours, age, risk, or weeks of available labor capacity.
Glossary FAQs
- What is the planned maintenance percentage formula?
Divide planned maintenance labor hours by total maintenance labor hours, then multiply by 100.
- Does Planned Maintenance Percentage include only preventive maintenance?
No. Planned maintenance can include preventive, corrective, inspection, calibration, and other prepared work.
- What can a low planned maintenance percentage indicate?
It may indicate excessive reactive work, weak planning, poor reliability, insufficient defect identification, or inadequate job preparation.