Lost Time Injury Frequency Rate Calculation Ontario
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Reviewed by Calculator Editorial Team
The Lost Time Injury Frequency Rate (LTIFR) is a key safety metric used in Ontario workplaces to measure the frequency of injuries that result in lost work time. This calculator helps you determine your workplace's LTIFR and understand how to improve safety standards.
What is Lost Time Injury Frequency Rate?
The Lost Time Injury Frequency Rate measures the number of lost time injuries per 100 full-time employees over a specific period. It's a critical indicator of workplace safety performance and is used by the Ontario government to assess workplace safety standards.
Lost time injuries are those that require the worker to be absent from work for more than three consecutive days. This metric helps employers identify high-risk areas and implement targeted safety improvements.
How to Calculate LTIFR
Calculating the Lost Time Injury Frequency Rate involves several steps:
- Count the total number of lost time injuries in your workplace during the period
- Determine the total number of full-time equivalent (FTE) employees during the same period
- Calculate the rate using the formula provided below
The result is expressed as the number of lost time injuries per 100 full-time employees.
Formula
The formula for Lost Time Injury Frequency Rate is:
LTIFR = (Number of Lost Time Injuries × 100) ÷ Number of Full-Time Equivalent Employees
Where:
- Number of Lost Time Injuries = Total injuries requiring absence of more than 3 days
- Number of Full-Time Equivalent Employees = Total employee hours worked ÷ 2080 (standard full-time hours per year)
Worked Example
Let's calculate the LTIFR for a workplace with 5 lost time injuries and 100 FTE employees:
LTIFR = (5 × 100) ÷ 100 = 5.00
This means there were 5 lost time injuries per 100 full-time employees.
This result indicates a moderate level of workplace safety risks. Employers should aim to reduce this rate through safety training, equipment improvements, and hazard identification programs.
Interpreting Results
Interpreting your LTIFR requires understanding the context of your industry and comparing it to industry benchmarks. In Ontario, the average LTIFR varies by sector:
| Industry | Average LTIFR |
|---|---|
| Construction | 7.5 |
| Manufacturing | 5.2 |
| Healthcare | 3.8 |
| Office | 2.1 |
Workplaces with LTIFR below 5.0 are generally considered to have good safety performance, while those above 7.0 may need immediate intervention.
FAQ
What is considered a lost time injury?
A lost time injury is any work-related injury that results in the worker being absent from work for more than three consecutive days.
How often should I calculate LTIFR?
LTIFR should be calculated annually to provide a comprehensive view of workplace safety performance over a full year.
What is a good LTIFR score?
A good LTIFR score varies by industry. Generally, scores below 5.0 indicate good safety performance.