1. What is Lost Time Injury Rate (LTIR)?

The Lost Time Injury Rate (LTIR) is a safety metric used to measure the number of lost time injuries occurring in a workplace per 200,000 hours worked. It helps organizations track and improve workplace safety performance.

2. How Does the Calculator Work?

The calculator uses the LTIR formula:

Where:

• Lost Time Injuries — Number of injuries resulting in time away from work
• Hours Worked — Total hours worked by all employees during the period
• 200,000 — Base for 100 full-time workers (50 weeks × 40 hours × 100 workers)

Explanation: The formula standardizes the injury rate to allow for comparison across different organizations and time periods, regardless of workforce size.

3. Importance of LTIR Calculation

Details: LTIR is a critical safety indicator that helps organizations monitor safety performance, identify trends, implement preventive measures, and benchmark against industry standards. A lower LTIR indicates better safety performance.

4. Using the Calculator

Tips: Enter the number of lost time injuries and total hours worked during the measurement period. Both values must be positive numbers, with hours worked greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What constitutes a lost time injury?
A: A lost time injury is any work-related injury that results in an employee being unable to perform their regular job duties for one or more days beyond the day of the injury.

Q2: Why is 200,000 hours used as the base?
A: 200,000 hours represents 100 employees working 40 hours per week for 50 weeks per year, providing a standard baseline for comparison across organizations of different sizes.

Q3: What is considered a good LTIR?
A: Industry standards vary, but generally, an LTIR below 2.0 is considered good, while below 1.0 is excellent. However, the ultimate goal should be zero lost time injuries.

Q4: How often should LTIR be calculated?
A: LTIR is typically calculated monthly, quarterly, and annually to track safety performance trends and identify areas for improvement.

Q5: Are there limitations to LTIR as a safety metric?
A: While useful, LTIR doesn't capture near-misses or minor injuries. It should be used alongside other safety metrics for a comprehensive safety performance assessment.