1. What is TRIR?

The Total Recordable Incident Rate (TRIR) is a standard safety metric used by OSHA to compare injury and illness incidence rates among companies and industries. It represents the number of recordable incidents per 100 full-time employees during a one-year period.

2. How Does the Calculator Work?

The calculator uses the OSHA TRIR formula:

Where:

• 200,000 — Equivalent to 100 employees working 40 hours/week, 50 weeks/year
• Recordable Incidents — OSHA-recordable injuries and illnesses
• Total Hours Worked — Sum of all hours worked by all employees during the period

Explanation: The formula standardizes incident rates across companies of different sizes by using a base of 100 full-time employees.

3. Importance of TRIR Calculation

Details: TRIR is a key safety performance indicator used for benchmarking, regulatory compliance, and identifying safety improvement opportunities. Lower TRIR values indicate better safety performance.

4. Using the Calculator

Tips: Enter the total number of OSHA-recordable incidents and total hours worked by all employees during the measurement period. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What counts as an OSHA recordable incident?
A: Any work-related injury or illness that results in death, days away from work, restricted work, medical treatment beyond first aid, or loss of consciousness.

Q2: What is a good TRIR?
A: The average TRIR varies by industry. Generally, rates below 3.0 are considered good, and below 1.0 is excellent.

Q3: How often should TRIR be calculated?
A: Typically calculated annually, but can be calculated quarterly for more frequent monitoring.

Q4: What's the difference between TRIR and DART rate?
A: DART (Days Away, Restricted or Transferred) rate only includes incidents that result in days away from work or restricted/transferred duty.

Q5: Can TRIR be zero?
A: Yes, if no recordable incidents occurred during the measurement period.