How is the Days Away, Restricted and Transfer Rate (DART) calculated?

• A. (# of DART cases x 200,000) / (hours worked by all employees in a given year)
• B. (# of injuries) / (hours worked)
• C. (# of days away) / (hours worked)
• D. (# of medical costs) / (hours worked)

Answer: (A)

The main idea is measuring how often serious injuries occur that keep employees away from work, on restricted duties, or transferred, and standardizing that rate to be comparable across different-sized workplaces. The DART rate uses the number of DART cases in the period as the numerator, and total hours worked by all employees as the denominator, with a fixed multiplier of 200,000 to put the rate on a consistent scale. So the rate is calculated as (Number of DART cases × 200,000) ÷ Hours worked. This normalization by hours worked and the specific focus on days away, restricted, or transferred distinguishes DART from broader injury counts, days away alone, or costs, which is why this formulation is used.