1. What is Lost Time Incident Rate?

The Lost Time Incident Rate (LTIR) is a safety metric used to measure the number of lost time injuries occurring in a workplace per 200,000 employee hours worked. It provides a standardized way to compare safety performance across different organizations or time periods.

2. How Does the Calculator Work?

The calculator uses the LTIR formula:

Where:

• \( Incidents \) — Number of lost time incidents
• \( Hours \) — Total hours worked by all employees
• 200,000 — Base for 100 full-time workers (40 hrs/week, 50 weeks/year)

Explanation: The 200,000 figure represents the number of hours 100 employees would work in a year (100 employees × 40 hours/week × 50 weeks).

3. Importance of LTIR Calculation

Details: LTIR is a key performance indicator for workplace safety. It helps organizations track safety performance, identify trends, and benchmark against industry standards.

4. Using the Calculator

Tips: Enter the total number of lost time incidents and the total hours worked by all employees during the period being measured. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What counts as a lost time incident?
A: Any work-related injury or illness that results in an employee missing work beyond the day of the incident.

Q2: How does LTIR differ from TRIR?
A: TRIR (Total Recordable Incident Rate) includes all recordable incidents, while LTIR only includes those resulting in lost work time.

Q3: What is a good LTIR?
A: Lower is better. Industry averages vary, but many organizations aim for LTIR < 1.0.

Q4: Why use 200,000 hours?
A: It standardizes the rate to represent what 100 full-time employees would experience in a year.

Q5: How often should LTIR be calculated?
A: Typically calculated annually, but can be calculated quarterly for more frequent monitoring.