How to Calculate the DART Rate

To calculate the DART rate:

DART Rate = (Number of DART Incidents × 200,000) / Total Employee Hours Worked

Where:

  • Number of DART Incidents: Total count of work-related injuries and illnesses resulting in days away from work, restricted duties, or job transfers.
  • 200,000: A standard base representing the total hours worked by 100 full-time employees in a year (assuming 40 hours per week for 50 weeks).
  • Total Employee Hours Worked: Aggregate number of hours worked by all employees during the reporting period.

Dart Rate Calculator

The Days Away, Restricted, or Transferred (DART) rate is a safety metric used by the Occupational Safety and Health Administration (OSHA) to quantify workplace injuries and illnesses that result in employees:

  • Taking time off from work.
  • Performing restricted work activities.
  • Being transferred to another job role

Example Calculation:

If a company reports 5 DART incidents over a year, with employees working a total of 250,000 hours during that period, the DART rate would be:

DART Rate = (5 × 200,000) / 250,000 = 1,000,000 / 250,000 = 4.0

This indicates there are 4 DART incidents per 100 full-time employees annually.

When calculating the DART rate, include work-related injuries and illnesses that result in:

  1. Days Away from Work:
    • Cases where the employee is unable to work for one or more days due to the injury or illness.
  2. Restricted Work Activity:
    • Instances where the employee cannot perform all routine job functions or work a full shift.
  3. Job Transfer:
    • Situations where the employee is moved to another job due to limitations from the injury or illness.

Exclusions from DART Rate Calculation:

Do not include incidents that involve:

  • First Aid Treatment Only:
    • Injuries or illnesses requiring only first aid, such as minor cuts treated with a bandage, do not count towards the DART rate.
  • Non-Work-Related Injuries or Illnesses:
    • Health issues not caused or significantly aggravated by work conditions are excluded.
  • Work-Related Cases Without Days Away, Restricted Work, or Job Transfer:
    • Incidents that are recordable but do not result in days away, restricted work, or job transfer are not included in the DART rate calculation.

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