Number of occupational injuries/illnesses per 100 full-time workers


The Lost Time Incidence Rate (LTIR) measures how well the City is doing to keep the overall incident (injuries and illnesses) rate down. Being above the target rate would demonstrate that the City is having more lost time incidents than projected. Rates below would indicate that the City did a better job at reducing these types of incidents.
This metric is also used to compare the City’s safety performance against a national average.  Incidence rates are used identify trends and areas of focus for safety improvement. The U.S. Bureau of Labor Statistics provides the annual incidence rates for industries to use for comparison. The equation is as follows:
Incidence Rate = (# of Injuries/Actual Hours Worked) X 200,000
The 200,000 factor is used to standardize the rate based on 100 employees working 40 hours a week for 50 weeks a year. 


The city would like to see this metric trending downwards over time, which would indicate that a reduction in injuries and illnesses or minimizing the incidents to the point of employees not losing time away from work. The trend is influenced by a national average and how well we do as an entity in implementing safety processes that drive the rate down.
Note: To see the underlying data for the chart, please select the "View Source Data" link.

Additional Measure Insights

The City of Austin LTIR for Fiscal Year 2021 is 5.88, higher than the national average rate of 2.9 for the Public Administration industry (NAICS 92). The reason for this significant increase was due to the high number of COVID-19 cases received from the first responder groups. The Division of Workers’ Compensation in Texas reported that the trend in 10 major Texas counties, including Travis County, showed about a 34% increase in claims from the previous year.

Measure Details and Definition

1) Definition:  Lost time incidence rate (LTIR) is a lagging indicator that measures the number of lost time injuries or illnesses in a given period compared to the total number of hours worked during that period.

2) Calculation method: Divide the total number of lost time injuries in a certain time period by the total number of hours worked in that period, then multiply by 200,000 to get the LTIR.
3) Data Collection Process:  Data is collected using information from a third-party administrator (TPA) and calculations of hours worked provided by the Human Resources Department.
4) Measure Target Calculation:  The target is based on The Bureau of Labor Statistics (BLS) national average for Public Administrations, North American Industry Classification System (NAICS) code 92.
5) Frequency Measure is Reported: Annually (Fiscal Year)
Date page was last updated: October 2020