OSHA TRIR Calculator
Total Recordable Incident Rate (TRIR) Analysis
Calculated TRIR
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Understanding OSHA TRIR Calculation
The Total Recordable Incident Rate (TRIR) is a mathematical standard used by OSHA (Occupational Safety and Health Administration) to monitor how many recordable injuries and illnesses occur in a workplace per 100 full-time employees annually.
The TRIR Formula
TRIR = (Number of Incidents × 200,000) / Total Employee Hours Worked
The number 200,000 represents the standard base for 100 full-time equivalent workers (100 employees working 40 hours per week for 50 weeks per year).
Why is TRIR Important?
- Safety Benchmarking: It allows you to compare your safety performance against industry averages.
- Insurance Premiums: Lower TRIR rates often lead to lower Workers' Compensation insurance costs.
- Bidding and Contracts: Many clients require a specific TRIR threshold before awarding contracts.
- OSHA Inspections: A high TRIR compared to industry peers may trigger a targeted OSHA inspection.
Practical Example
Imagine a manufacturing plant with 150 employees who collectively worked 300,000 hours last year. During that year, there were 4 recordable incidents.
Calculation: (4 × 200,000) / 300,000 = 2.67
The TRIR for this company is 2.67, meaning for every 100 employees, there were 2.67 recordable incidents.