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Total Case Incident Rate (TCIR)

Last updated: May 21, 2019

What Does Total Case Incident Rate (TCIR) Mean?

The total case incident rate (TCIR) is the generally accepted way of measuring the rate of workplace injuries and illnesses within a given population in the United States.

A TCIR is a calculation based on the number of mandatory reported OSHA recordable injuries and illnesses that occur each year at any company or workplace.

Safeopedia Explains Total Case Incident Rate (TCIR)

The TCIR is a benchmark rate measurement and is used to allow firms to compare their historical safety performance against other similarly sized firms in the same sector, industry, and region. The U.S. Bureau of Labor Statistics publishes annual TCIR data that includes both overall rates and breakdowns into various subcategories such as industry sector and number of employees per firm, as well as basic summary statistics such as the average and median TCIR for each subcategory.

The TCIR is the primary lagging indicator used to measure safety performance within workplaces and to compare between workplaces. The TCIR calculation represents the number of work injuries multiplied by a constant of 200,000—which represents the number of hours that 100 employees working for 40 hours per week would work in a year—divided by the actual number of employee hours worked. The number of hours worked in a TCIR refers to the number of hours actually spent working, and it does not include paid break time that may be logged as “hours worked” for accounting purposes.

Use of the 200,000-hour constant ensures that the incident rates for each workplace are measured on a common scale of [number of injuries/100 workers/year], regardless of the size of the workplace or the average number of hours worked per week. As a result of this scaling statistic, data from the Bureau of Labor Statistics (BLS) shows relatively little variance in the total incident rate within companies that have vastly different numbers of employees.

Workplaces with fewer than 10 employees have an average TCIR of 1.5, while workplaces with more than 1,000 employees have an average TCIR of 4.0. The BLS also records more detailed statistics that break down TCIRs according to individual industries, work sectors, and regions.


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