DART Rate (Days Away, Restricted, or Transferred)

What It Means

The DART rate is calculated similarly to the TRIR but only counts incidents that resulted in at least one day away from work, one day of restricted work activity, or a job transfer. This makes DART a more focused measure of injury severity than the broader TRIR, since it excludes less severe recordable incidents such as those requiring only medical treatment beyond first aid. The formula is: (number of DART incidents x 200,000) / total hours worked. OSHA uses DART rates as part of its Site-Specific Targeting (SST) program to identify workplaces with elevated injury rates for programmed inspections. Employers whose DART rates exceed the national average for their industry are more likely to receive an OSHA inspection. Insurance underwriters and construction prequalification services also rely heavily on DART rates when assessing employer risk profiles. A high DART rate compared to industry average suggests that a workplace not only has injuries occurring but that those injuries are serious enough to keep workers off the job or limit their duties.

Frequently Asked Questions