Recordable Injury Rate (TRIR) Calculator
Your TRIR Result:
What is the Recordable Injury Rate (TRIR)?
The Total Recordable Incident Rate (TRIR) is a standardized safety metric developed by OSHA to help companies evaluate their safety performance. It represents the number of work-related injuries and illnesses per 100 full-time employees over a one-year period.
The TRIR Formula
To calculate the TRIR, use the following mathematical formula:
The constant 200,000 represents the equivalent of 100 employees working 40 hours per week, 50 weeks per year (100 x 40 x 50 = 200,000). This normalization allows businesses of different sizes to compare their safety records fairly.
What Qualifies as a "Recordable" Injury?
Under OSHA requirements, an injury or illness is "recordable" if it results in any of the following:
- Death
- Days away from work
- Restricted work or transfer to another job
- Medical treatment beyond first aid
- Loss of consciousness
- A significant injury or illness diagnosed by a physician
Example Calculation
Suppose a manufacturing plant had 4 recordable injuries over the last year. During that same period, the total sum of hours worked by all employees (including overtime) was 160,000 hours.
Step 1: Multiply injuries by 200,000 (4 × 200,000 = 800,000).
Step 2: Divide by total hours (800,000 / 160,000 = 5.0).
The resulting TRIR is 5.0, meaning for every 100 workers, 5 sustained a recordable injury.
Why Does TRIR Matter?
Maintaining a low TRIR is vital for several reasons:
- Insurance Premiums: Lower incident rates often lead to lower Workers' Compensation insurance costs.
- Contract Bidding: Many government agencies and large corporations require contractors to have a TRIR below a certain threshold to bid on projects.
- OSHA Inspections: A high TRIR compared to your industry average may trigger targeted OSHA inspections.
- Employee Morale: A safe workplace demonstrates that a company values its people, leading to higher retention and productivity.