1. What is Monthly TRIR?

The Total Recordable Incident Rate (TRIR) is a standard safety metric used to measure the number of recordable injuries and illnesses per 100 full-time workers during a one-year period. The monthly version provides a shorter-term perspective on workplace safety performance.

2. How Does the Calculator Work?

The calculator uses the TRIR formula:

Where:

• 200,000 — Represents 100 employees working 40 hours/week, 50 weeks/year
• Monthly Incidents — Number of recordable injuries/illnesses in the month
• Monthly Hours Worked — Total hours worked by all employees in the month

Explanation: The formula standardizes the incident rate regardless of company size or hours worked.

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 number of recordable incidents and total hours worked for the month. Both values must be positive numbers (hours must be greater than 0).

5. Frequently Asked Questions (FAQ)

Q1: What counts as a recordable incident?
A: OSHA recordable incidents include work-related injuries/illnesses that result 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. Lower is better, with zero being the ideal. Compare to industry benchmarks for meaningful interpretation.

Q3: Why use 200,000 hours?
A: This represents 100 employees working 40 hours/week for 50 weeks/year, providing a standard base rate for comparison.

Q4: Can I calculate TRIR for periods other than monthly?
A: Yes, the same formula works for any time period - just use the incidents and hours for your desired period.

Q5: How does monthly TRIR relate to annual TRIR?
A: Annual TRIR is typically calculated by summing monthly incidents and hours, then applying the same formula.