How To Use The TRIR calculator?
If a company had:
5 recordable incidents in a year,
500,000 total hours worked by employees,
The TRIR would be calculated as
TRIR = (5×200,000) / 500,000 = 2.0
The company has a TRIR of 2.0, indicating 2 recordable incidents per 100 full-time workers per year.
- Generally, a TRIR below 3.0 is considered good
- A lower TRIR indicates better safety performance.
- A TRIR of 0.0 is perfect, representing no recordable incidents.
OSHA TRIR Calculator
The TRIR (Total Recordable Incident Rate) is a key metric used to assess workplace safety. It is calculated using the following formula:
TRIR = (Number of Recordable Incidents × 200,000) / Total Hours Worked
Explanation of the Formula:
- Number of Recordable Incidents:
This includes all incidents that must be recorded under OSHA (Occupational Safety and Health Administration) guidelines, such as fatalities, injuries, and illnesses.
- 200,000
This is a standard base number representing the hours worked by 100 employees over a year (assuming 40 hours per week, 50 weeks per year). It is used to normalize the rate across different organizations and industries.
- Total Hours Worked:
This is the total number of hours all employees work during the measured period (e.g., a year).
- A lower TRIR indicates better safety performance.
- A TRIR of 0.0 is perfect, representing no recordable incidents.
- Generally, a TRIR below 3.0 is considered good
What Events You Must Include when Calculating TRIR
1. Work-Related Death
- Any work-related injury or illness that results in the death of an employee must be recorded.
2. Days Away from Work
- Injuries or illnesses that result in one or more days away from work must be included.
- Note: The day of the injury is not counted as a day away.
3. Restricted Work or Job Transfer
- Cases where an employee cannot perform one or more routine job functions or their full workday due to an injury or illness.
- Includes job transfers to accommodate restrictions imposed by a healthcare professional.
4. Medical Treatment Beyond First Aid
- Any treatment provided beyond basic first aid. Examples of treatments considered medical treatment:
- Prescription medications (other than for diagnostic purposes).
- Sutures, staples, or other wound-closing devices.
- Physical therapy or chiropractic treatment.
- Administering vaccinations (e.g., Hepatitis B, rabies).
- Use of rigid devices for immobilization (e.g., splints, braces).
5. Loss of Consciousness
- Any work-related event causing an employee to lose consciousness, even for a brief period.
6. Significant Diagnosed Injuries or Illnesses
- Diagnoses made by a physician or licensed healthcare professional, even if they don’t result in days away, restricted work, or medical treatment. Examples:
- Cancer caused by work exposure.
- Chronic irreversible diseases (e.g., silicosis, asbestosis).
- Fractures or cracked bones.
- Punctured eardrums.
What is Not Included:
These events are not included in the calculation of OSHA TRIR:
- First Aid Only Cases: Treatments such as bandages, non-prescription medications, hot/cold therapy, etc.
- Non-Work-Related Injuries/Illnesses: Events unrelated to the employee’s work environment.
- Cases Without Medical Treatment, Restricted Work, or Time Away: If no recordable criteria are met.
