1. What is TRIR?

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

2. How Does the Calculator Work?

The calculator uses the TRIR formula:

Where:

• Recordable Incidents — Number of OSHA-recordable injuries and illnesses
• 200,000 — Base for 100 full-time equivalent workers (working 40 hrs/week, 50 weeks/year)
• Total Hours Worked — Sum of all hours worked by all employees during the period

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

3. Importance of TRIR Calculation

Details: TRIR is a key performance indicator for workplace safety programs, used for benchmarking, regulatory compliance, and identifying safety improvement opportunities.

4. Using the Calculator

Tips: Enter the total number of 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 a recordable incident?
A: OSHA recordable incidents include work-related fatalities, injuries requiring treatment beyond first aid, diagnosed occupational illnesses, and other specific cases.

Q2: What is a good TRIR?
A: Lower is better. The average varies by industry, with construction typically higher than office environments. Below 3.0 is generally considered good for most industries.

Q3: Why 200,000 hours?
A: This represents 100 workers each working 40 hours/week for 50 weeks/year (100 × 40 × 50 = 200,000).

Q4: How often should TRIR be calculated?
A: Typically calculated annually, but can be calculated quarterly or monthly for more frequent monitoring.

Q5: Are there limitations to TRIR?
A: TRIR doesn't measure severity of incidents and can be influenced by under-reporting. It's best used with other safety metrics.