Occupational Safety, Health, and Environmental (OSHE) BlogOccupational Safety, Health, and Environmental (OSHE) BlogLost Workday Rate Calculator
Measure Productivity Loss
Calculate lost workday rates and measure productivity loss for comprehensive workplace safety management.What is Lost Workday Rate?
Lost Workday Rate (LWR) is a key safety metric that measures the number of workdays lost due to workplace injuries per 100,000 hours worked. It provides a standardized way to assess the impact of injuries on productivity and organizational performance.
This metric helps organizations track productivity loss trends, identify areas for improvement in injury prevention and return-to-work programs, and benchmark their performance against industry standards.
Lost Workday Rate Formula
Lost Workday Rate =
(Number of Lost Workdays ÷ Total Hours Worked) × 100,000
Expressed as lost workdays per 100,000 hours worked
Industry Benchmarks
Industry Leading< 0.5
Above Average0.5 - 1.0
Average1.0 - 2.0
Below Average2.0 - 4.0
Critical> 4.0
Important Notes
Include all lost workdays due to workplace injuries in your calculations
Use accurate total hours worked for precise calculations
Track lost workdays by injury severity for detailed analysis
Compare rates over time to identify productivity loss trends
Lost Workday Rate Calculator
Minor
Moderate
Severe
Fatal