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About SOII - Survey of Occupational Injuries and Illnesses

The Bureau of Labor Statistics' (BLS) annual Survey of Occupational Injuries and Illnesses (SOII) provides estimates of the number and rates of work-related injuries and illnesses. BLS 2010 SOII Information.

BLS 2011 SOII Information

BLS 2011 SOII Charts and Graphs


What is SOII?

The Survey of Occupational Injuries and Illnesses (SOII) is conducted each year to find out from selected companies across the United States the status of workplace safety.  Indiana conducts the survey from a list prepared by the federal Bureau of Labor Statistics to represent Hoosier industries.  SOII workers at the Division of Quality, Metrics, and Statistics (BLS) poll over 5,000 Hoosier businesses from hospitals and foundries, to financial companies and professional sports teams.  This data is then sent to the BLS to be compiled to estimate the number of NON-fatal workplace injuries and work-related illnesses for the entire state.

What are the numbers?

SOII generates the estimates we use to plan safety initiatives at the Indiana Department of Labor (IDOL).  The first is the number of Injuries and Illnesses related to work activities.  These can be the result of falls, vehicular accidents, hearing losses or problems resulting from the exposure of workers to toxic chemicals in the workplace.  We also compile an estimated rate of injuries and illnesses separately for the state and each major industry.  We use BLS data to find out how many fulltime people are employed in each industry and calculate a number that represents our best estimate of the “rate of occupational injuries and illnesses per 100 workers”. 

To be counted as an incident for the SOII, a worker must be engaged in work at the workplace or off-site because of work; he or she must be injured or have acquired an illness from their work and require some medical attention.  There are three principal classes of injury and illness in terms of the result.  A “recordable incident” is any event that needs care under the conditions above.  We also count those incidents that are “recordable” that cause the worker to be reassigned (a warehouse worker with a back injury, who is reassigned to office work while they heal).  Additionally, we count events that cause workers to spend “days away from work”, which means that the recovery included being absent from work in order to heal.