# DART Rate: What It Means and How to Calculate it

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DART rate is said to provide more insight into the effect of incidents on the organization than the TRIR (Total Recordable Incident Rate). This is because it does not just take into account all the recordable incidents, but it considers the details of the outcome of the incidents.

## What is the DART Rate

DART rate is one of the safety KPIs (Key performance indicator) and means “Days Away, Restricted or Transferred”. It helps employers determine how many workplace injuries and illnesses require employees to miss work, perform restricted work activities, or transfer to another job within a calendar year.

Deducing this rate is one of the ways of measuring the effectiveness of the safety management program and assessing the impact of incidents on the overall organization’s performance.

DART takes into consideration:

• Incidents that kept a worker away from work
• Incident which restricted the worker from performing some task associated with his/her job.
• Incidents that made a worker be transferred from his/her normal duty to another duty; maybe lighter duty.

Based on the DART results, the management can seek ways to review the safety program for better implementation.

Read AlsoSee how LTIFR is calculated from LTI (Lost time injury)

## How To Calculate DART Rate

OSHA stipulates that DART rate should be calculated thus:

### DART rate formula

The DART rate is calculated using the following formula:

(Number of OSHA Recordable injuries and illnesses that resulted in Days Away; Restricted; Transferred X 200,000) / Employee hours worked.

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The choice of 200,000 as a constant multiplication factor is because OSHA assumes the value represents the number of hours worked by 100 employees for an entire year.

## The difference between DART’s Rate And TRIR

Though the DART’s rate and the TRIR are almost the same, the calculation parameters are different.

Here are the slight differences:

• Where the TRIR uses – (Total recordable incidents) while DART’s rate uses – the total number of incidents or illnesses resulting in either the worker missing work, being on restricted duty, or being transferred to another job)
• TRIR is always expected to be higher than the DART.

How do I determine the “Total number of incidents or illnesses resulting in either the worker missing work, being on restricted duty, or being transferred to another job”?

This is a valid question.

There may be cases where one incident results in missing work and restricted duty or transfer.

In such a case, the incident is taken as ONE.

N/B: One incident just duplicated itself in two or more ways, hence it should be taken as one incident, not to be duplicated.

To determine the “Total number of incidents or illnesses resulting in either the worker missing work, being on restricted duty, or being transferred to another job” – Just count the number of incident that falls into this category without repetition.

## Related Posts

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How To Calculate OSHA Recordable Incident Rate

TRIR Calculation: Easy Way To Calculate TRIR

5 Key Elements of the Risk Management Process