Severity Rate Calculator

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About Severity Rate Calculator (Formula)

A Severity Rate Calculator is a tool used to assess the severity of workplace injuries and illnesses within a specific time period. The severity rate is a key metric in occupational health and safety that provides insights into the seriousness of incidents and helps organizations prioritize safety improvements and preventive measures.

The formula for calculating the severity rate is:

Severity Rate = (Number of Lost Workdays + Number of Restricted Workdays) * 200,000 / Total Hours Worked

Where:

  • Severity Rate is the rate that indicates the severity of workplace injuries and illnesses.
  • Number of Lost Workdays represents the total number of days employees were unable to work due to injuries or illnesses.
  • Number of Restricted Workdays represents the total number of days employees were limited in their work activities due to injuries or illnesses.
  • 200,000 is a constant used to standardize the rate per 100 full-time workers.
  • Total Hours Worked is the total number of hours worked by all employees during the same time period.

To use the Severity Rate Calculator formula, follow these steps:

  1. Determine the number of lost workdays and the number of restricted workdays due to injuries or illnesses.
  2. Calculate the total hours worked by all employees during the same time period.
  3. Plug the values of lost workdays, restricted workdays, and total hours worked into the formula: Severity Rate = (Number of Lost Workdays + Number of Restricted Workdays) * 200,000 / Total Hours Worked.
  4. Calculate the severity rate. The result will provide a numerical value indicating the severity of workplace incidents.

The severity rate helps organizations identify high-risk areas and trends, allowing them to implement targeted safety measures. A high severity rate indicates a higher number of lost and restricted workdays due to serious incidents, which may warrant more immediate attention and intervention.

It’s important to note that the severity rate is just one aspect of evaluating occupational health and safety. It should be used in conjunction with other metrics like the frequency rate and comprehensive safety assessments to develop effective safety strategies.

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