DART Rate: What It Is and How to Calculate It
Your company's DART rate is a good measure of the business impact of workplace injuries.
Every safety professional knows that injuries and other incidents have a strong, negative effect on productivity and efficiency. But it can be difficult to communicate this to other members of your organization unless you have some numbers to make the problem apparent and urgent.
That's why your company's DART rate is so important.
What Is the DART Rate?
DART is an acronym for Days Away, Restricted, or Transferred. It's one of the metrics that OSHA uses to measure the impacts of workplace injuries. It tracks any worker who suffered a workplace injury or illness that caused them to cease working in their normal capacity. This includes anyone who has had to:
- Cease working
- Restricted their work activities
- Transferred to different department or job
Unlike your company's total injury rate, DART represents only those injuries and illnesses that have had an impact on workplace activities. And unlike your lost time injury frequency rate, it will include any injury that has affected the normal course of your operations, not only those that resulted in caused an employee to temporarily or permanently cease working (learn more about Calculating Your Company's Lost Time Injury Frequency Rate).
How to Calculate Your DART Rate
OSHA requires companies to submit an OSHA 300 log every year, and the DART rate will be included in it.
Luckily, calculating your DART rate is easy. Simply use the following formula:
DART rate = (Total number of recordable injuries and illnesses that caused a worker to be away, restricted, or transferred x 200,000) / Total number of hours worked by all employees
Why 200,000? It represents the number of hours that 100 employees will work over a 50 week span (leaving out two weeks to account for holidays), assuming they each put in 40 hours a week.
But it doesn't matter whether 100 of your employees actually worked 200,000 hours. Even if they worked substantially more or fewer hours than this, it's still the number you will be using because it is used as a benchmark to allow easy comparison across companies and industries.
The Big Question: What Counts as Recordable?
The biggest trouble with DART rate calculations is usually determining what constitutes a recordable injury.
Here are some tips for clearly identifying the events that should be included in your DART rate.
The DART rate only includes injuries or illnesses that were sustained at work or developed as a result of work practices or conditions.
Pre-existing conditions should not be counted toward the DART rate, nor should injuries that were sustained outside of work. This includes symptoms that present at work but were caused by an injury or illness incurred outside of working hours.
For example, suppose an employee injures their knee while playing a game of backyard football over the weekend. They come to work on Monday but the pain becomes unbearable and at mid-day they leave to consult a doctor who advises them to take a few days off work. Although much of this scenario played out in the workplace, the injury itself did not happen at work, so it should not be included in the DART rate.
Partial Return to Work
The DART rate represents injuries that result in a worker being away from work, restricted in their work, or transferred. But how do you record it if an injury causes more than one of these scenarios to take place?
Suppose that a worker develops a lung condition while from exposure at work and have to take a few weeks off to undergo in-patient hospital treatments. Once they return to work, however, their decreased lung capacity makes them incapable of performing their job's physically demanding labor, so they're transferred to an office position.
So, here we have a worker who was away from work and transferred. Does it count as two instances of DART?
No. In this case, both events were caused by the same incident, so it only counts once.
Put simply, the DART rate calculates the frequency of incidents resulting in these events, not the number of events themselves.
Although the paperwork it involves is a lot less exciting than implementing control measures, leading committees, and promoting safety initiatives, calculating your DART rate will provide you with valuable insight into the safety of your workplace.
Having clear data on the impact workplace incidents have on your company is an important step in making a case for an increased investment in safety. So don't just send your DART info to OSHA; make use of this valuable info, too.
More from AD Safety Network
- When should you consider using custom molded earplugs?
- At what height do falls become deadly?
- Who should be responsible for rescuing fallen workers?
- What kind of training do loading dock workers need?
- How often should I inspect a loading dock?
- How is wind chill calculated?
- What is the difference between occupational safety and process safety?
- Why should rubber insulating gloves be tested?
- What happens if I tie off at the foot level with a personal SRL?
- Why is testing with a NAIL4PET accredited lab important?
- What kind of face protection do I need when using a chainsaw?
- What is the permissible exposure limit (PEL) for silica?
- What is silica and why is it hazardous?
- What is 'Table 1' and why is it so important?
- Video Q&A - What is a safety policy?
- What kind of fire extinguisher is best for your work site?
- How do I choose the right respirator and mask for working with silica?
- Can I wear fall protection equipment over my rainwear or winter gear?
- When do I need a cage ladder?
- What types of gloves protect your hands from hazardous chemicals?
- How come I still got hurt while wearing flame-resistant clothing?
- What dangers do workers face when working outside in the winter?
- How do I win over my most reluctant employees?
- What kinds of jobs should use disposable safety gloves?
- Is it true that safety shouldn't be a top priority?
- When are employers allowed to conduct drug and alcohol tests on their employees?
- How can I get employees more involved in the risk assessment plan?
- What are some of the indirect costs of accidents?
- How often do fire extinguishers need to be inspected?
- What is the best way to store rubber safety gloves?
- How much voltage protection is needed for safety gloves used in electrical work?
- What is the difference between a safety valve and a release valve?
- When do workers have the right to refuse to work?
- What is the most overlooked item when designing Lockout/Tagout (LOTO) procedures?
- What are some of the misconceptions about heat stress and what should we do to address them?
- What tools should I tether when working at heights?
- What types of gas should I watch out for when working in a confined space?
- How do you create a culture of safety in your workplace?
- What is the difference between industrial safety and industrial hygiene?
- Is it important to get PPE assessments by trained professionals?
- What is a fault tree analysis?
- What kind of respirator cartridge should I use?
- What are the safety benefits of a whistleblower program?
- What type of safety record-keeping and recording should we be doing?
- What makes a hi-vis safety vest ANSI compliant?
- Why is it important to have air sampling done to determine my PELs?
- What is the life expectancy of fall protection equipment?
- What are hot work and cold work permits?
- What are some basic fall protection rules that each of my workers need to understand?
- How much clearance do I need to safely use a Leading Edge SRL?
- What is the difference between an acute hazard and a chronic hazard?
- What’s the difference between a bump test, a calibration check, and a full calibration?
- Is there any legislation regulating lone worker safety I should know about before hiring?
- What kind of fire extinguisher and accessories should be kept on hand on a factory floor?
- What can companies do to reduce their lost time injury frequency rates?
- Video Q&A - What's your safety network like?
- Video Q&A - What are the 3 levels of safety?
- Video Q&A - How do you treat a near miss?
- Does body weight affect falls differently?
- What ages are most affected by falls?
- Why do workers take risks?
- What Is the Difference Between OHSAS 18001 and 18002?
- What is the difference between lost time injury and medical treatment case?
- What is the difference between occupational health and safety and workplace health and safety?
- What is the difference between occupational health and occupational safety?
- What is the difference between a lost time injury and a disabling injury?