Occupational Safety, Health, and Environmental (OSHE) Blog

Lost Time Case Rate Calculator

Workplace Injury Metric
Calculate lost time case rates and measure workplace injury metrics for comprehensive safety management.

What is Lost Time Case Rate?

Lost Time Case Rate (LTCR) is a key safety metric that measures the number of workplace injury cases that result in lost time per 100,000 hours worked. It provides a standardized way to assess the frequency of serious workplace injuries that impact productivity.

This metric helps organizations track injury case trends, identify areas for improvement in injury prevention and case management, and benchmark their performance against industry standards.

Lost Time Case Rate Formula

Lost Time Case Rate =
(Number of Lost Time Cases ÷ Total Hours Worked) × 100,000
Expressed as lost time cases per 100,000 hours worked

Industry Benchmarks

Industry Leading< 0.8
Above Average0.8 - 1.5
Average1.5 - 3.0
Below Average3.0 - 6.0
Critical> 6.0

Important Notes

Include all lost time cases due to workplace injuries in your calculations

Use accurate total hours worked for precise calculations

Track lost time cases by severity for detailed analysis

Compare rates over time to identify injury case trends

Lost Time Case Rate Calculator

Minor
Moderate
Severe
Fatal