What’s DART Rate? How to Calculate It and Why Do You Need

  • Reviewed By: Mr. Qaseem (Safety Officer, GRADIOSH)

In the realm of occupational safety, few metrics are as pivotal as the DART rate. This essential measure offers a snapshot of an organization’s safety performance, illuminating potential areas of concern and helping set the stage for necessary improvements. Whether you’re a safety professional, business owner, or just keen to understand more about workplace safety, this guide will provide an in-depth dive into the significance of the DART rate, its calculation, and strategies to optimize it.

We’ll demystify what DART stands for, highlight its importance, differentiate it from other metrics like TRIR, and furnish you with actionable insights to both calculate and maintain optimal DART values. So, buckle up as we embark on a journey to unravel the intricate tapestry of workplace safety metrics, starting with the invaluable DART rate.

What Does DART Stand For?

DART stands for “Days Away, Restricted, or Transferred.” It is a safety metric utilized by the Occupational Safety and Health Administration (OSHA) to measure the impact of workplace injuries and illnesses on an organization’s workforce. The metric specifically takes into account incidents that were severe enough to cause an employee to take days off from work, be restricted in their work activities, or be transferred to a different job role.

The DART rate offers insights into the severity of work-related incidents in a given organization over a calendar year. A higher DART rate might indicate a greater number of significant workplace incidents, suggesting areas where safety improvements might be needed. This rate helps employers identify and address workplace hazards, ensuring the well-being of their employees and compliance with safety regulations.


Why are DART rates so Important?

DART rates (Days Away, Restricted, or Transferred) are of paramount importance in the realm of workplace safety for several reasons:

  • Indicator of Workplace Safety: A high DART rate can indicate that, while injuries or illnesses might be occurring, they are of a nature that significantly impacts an employee’s ability to perform their regular duties. Thus, it provides a lens into the severity of workplace incidents.
  • Regulatory Compliance and Reporting: OSHA (Occupational Safety and Health Administration) monitors DART rates to ensure companies are compliant with safety standards. In certain industries, companies are mandated to submit their DART rates electronically to OSHA.
  • Potential for OSHA Inspections: Companies with elevated DART rates might be flagged for inspection by OSHA officials. These inspections can lead to operational disruptions, and if violations are identified, they can result in substantial fines.
  • Benchmarking and Industry Standards: Organizations can compare their DART rates against benchmarks or averages within their specific industry or sector, as published by agencies like the Bureau of Labor Statistics (BLS). A rate higher than the industry average could signal the need for improvements in the company’s safety program.
  • Financial Implications: High DART rates can lead to increased workers’ compensation claims, which can raise insurance premiums. In addition, companies bidding for projects, especially in industries like construction or manufacturing, might be required to disclose their DART rates. A high rate can adversely affect a company’s chances of winning contracts.
  • Reputation and Brand Image: A company’s DART rate can influence its reputation in the market. High rates might be interpreted as a lack of commitment to worker safety, potentially impacting partnerships, customer relations, and even employee morale and retention.
  • Operational Impact: If workers are frequently absent, restricted, or transferred due to injuries or illnesses, it can impact daily operations, leading to decreased productivity, potential delays, and even increased costs due to hiring temporary replacements or overtime payments.

In summary, DART rates are a crucial metric, not only as a measure of workplace safety but also in their broader implications for operational efficiency, regulatory compliance, financial health, and corporate reputation. Keeping DART rates low indicates a company’s commitment to the well-being of its workforce and can offer competitive and financial advantages.

Effective Tips When Calculating Your Dart Rate

Difference Between DART and TRIR

DART and TRIR are both crucial safety metrics used by organizations to evaluate their safety performance, particularly in industries where workplace hazards are common. However, they measure different aspects of workplace injuries and illnesses:

DART (Days Away, Restricted, or Transferred)

DART measures the number of workplace injuries and illnesses that result in employees taking days away from work, having restricted work capabilities, or being transferred to another job.

The DART rate helps employers understand the severity of work-related incidents. When an incident results in days away from work or a job change, it usually signifies a more serious injury or illness. A higher DART rate may suggest that while the total number of incidents might be low, the incidents that do occur are severe.

TRIR (Total Recordable Incident Rate)

TRIR quantifies the total number of recordable workplace injuries and illnesses per 100 full-time workers in a given calendar year. “Recordable” typically means any injury or illness that requires medical treatment beyond first aid.

The TRIR provides a broader overview of the safety performance by counting all recordable incidents, not just those that result in days away, restriction, or transfer. A company might have a high TRIR (indicating many incidents) but a low DART rate (indicating fewer severe cases).

In essence, while both DART and TRIR are valuable in assessing workplace safety, DART focuses more on the severity of incidents, and TRIR gives an overall snapshot of all recordable incidents. Together, they offer a comprehensive view of an organization’s safety landscape.

DART Rates - How To Calculate Yours, and Keep OSHA Away

How to Calculate Dart Rate

The DART rate (Days Away, Restricted, or Transferred) is a measure used to gauge the frequency of significant workplace injuries or illnesses. Here’s how to calculate the DART rate:

Determining the Number of DART Cases

Days Away From Work

These are cases where an employee suffers an injury or illness that is severe enough to prevent them from returning to work for one or more days. This not only implies a serious injury but also results in lost productivity for the business.

Restricted Work Activities

In these situations, an employee can return to work but is unable to perform their regular duties due to the injury or illness. This might mean that they’re given alternative tasks or are limited in the range or duration of activities they can engage in.

Transfers to Another Job

If an injury or illness makes it unsuitable or unsafe for an employee to continue in their current role, they might be temporarily transferred to another position. This could be a lateral move, or it might be to a role that’s considered less physically demanding.

Calculating Total Hours Worked

It’s crucial to get an accurate count of the total hours worked by all employees. This ensures that the DART rate is normalized and can be compared from year to year or against other businesses. When calculating this, ensure that:

  • All categories of workers are included.
  • Only actual work hours are counted. Excluding hours when employees weren’t working (like holidays or sick leave) ensures that the rate is representative of the actual risk exposure.

Applying the DART Rate Formula:

Using the formula, businesses can convert the raw data of DART cases and total hours worked into a standardized rate. The figure 200,000 is used as a normalization factor. It’s derived from the assumption that 100 employees, working 40 hours a week for 50 weeks, would work 200,000 hours in total. This allows companies of different sizes to compare their DART rates on an even playing field.

Example Breakdown

If there were 10 DART cases in a year, and employees worked a combined total of 500,000 hours, the DART rate would be calculated as:

(10 × 200,000) ÷ 500,000, giving a result of 4.

This means that for every 200,000 hours worked (equivalent to 100 full-time employees working for a year), there were 4 instances where employees had to miss work, restrict their activities, or get transferred due to injuries or illnesses.

Significance of the DART Rate

The DART rate is a powerful tool for gauging the effectiveness of a company’s safety programs. A decreasing DART rate over time suggests that safety initiatives are working, while an increasing or high rate suggests areas that need focus and improvement.

Comparing a company’s rate against industry averages can also offer insights into how it stands in relation to its peers. Safety is not just about compliance; it’s also about ensuring the well-being of the workforce and minimizing operational disruptions.

Calculate DART Rate

Effective Tips When Calculating Your Dart Rate

When calculating your DART rate, accuracy, consistency, and comprehensive understanding are key. Here are some effective tips to ensure that you’re computing your DART rate correctly and using the information to its fullest potential:

1. Maintain Comprehensive Records

Maintaining meticulous records is the cornerstone of any accurate data-driven metric. In the context of the DART rate, every detail of workplace injuries and illnesses must be logged. This not only means the number of incidents but also their nature, severity, and subsequent actions taken. Comprehensive records will ensure that the foundation of your DART rate is solid. Without accurate initial data, any subsequent calculations or analyses may be skewed, potentially leading to misguided safety decisions.

2. Differentiate Between DART Cases and Other Incidents

All workplace incidents are not created equal. While every injury or illness is unfortunate, DART specifically focuses on those that led to days away from work, job restrictions, or transfers. This differentiation is crucial because DART rates aim to measure the more significant incidents affecting an employee’s usual work routine. By sifting through the data and selecting only the relevant cases, you’ll ensure your DART rate truly reflects the incidents it’s intended to represent.

3. Regularly Update Total Hours Worked

The total hours worked by all employees is a dynamic figure, changing with every workday. Regularly updating this total ensures that when it’s time to calculate the DART rate, you won’t be scrambling to compile months of data. This also emphasizes the importance of differentiating between work hours and hours not worked due to sick days, vacations, or holidays. Such differentiation ensures the accuracy of the denominator in the DART rate formula.

4. Use a Standardized Reporting System

Standardization is the key to consistency. Whether an incident happens in one department or another, or even in a different site altogether, the method of reporting and recording that incident should remain the same. A standardized system ensures that data from all across the organization is comparable and prevents potential discrepancies arising from varied reporting methods.

5. Stay Updated with OSHA’s Definitions and Guidelines

The world of workplace safety is always evolving, with definitions, regulations, and guidelines regularly reviewed and updated. Keeping abreast of these changes ensures that your DART calculations remain compliant with the latest standards. Adherence to OSHA’s guidelines ensures that you’re measuring what you intend to and that your DART rate is aligned with national standards.

6. Audit and Review

Even with the best systems in place, mistakes can occur. Periodic audits and reviews of your injury and illness records serve as a quality check, ensuring that errors haven’t crept into your data. These checks can identify patterns, anomalies, or missing information, allowing for timely corrections.

7. Train Personnel in Data Collection

Data quality is only as good as the personnel collecting it. Proper training ensures that those responsible for logging information are not only diligent but also understand the implications of their records. An informed individual is less likely to make oversights and more likely to capture the nuances of each incident.

8. Regularly Analyze and Discuss the Rate

Calculating the DART rate isn’t an end but a starting point. Regular analysis allows you to spot trends, understand their implications, and take actionable steps. Comparing the current rate with historical data can provide insights into the efficacy of safety measures implemented.

9. Consider Seasonal Variations

Many organizations experience fluctuations in workforce size and hours during specific periods. Recognizing and accounting for these seasonal variations ensures that your DART rate is contextualized and not misleading due to workforce surges or declines.

10. Consistency is Key

Year-to-year comparisons are invaluable in tracking safety performance. However, these comparisons are only valid if the methodology remains consistent. Whether it’s the data collection method, the calculation process, or the analysis tools, consistency ensures that you’re comparing apples to apples.

11. Cross-check with Industry Benchmarks

Your DART rate in isolation has limited value. Comparing it with industry benchmarks provides context, allowing you to gauge your safety performance relative to peers. Such comparisons can highlight areas of excellence or those needing improvement.

12. Use the Data Proactively

A reactive approach to safety, where actions are taken post-incident, is less effective than a proactive one. If your DART rate shows an unfavorable trend, it’s an indicator to dive deep and identify underlying issues. Addressing these proactively can avert potential incidents in the future.

13. Communication

Safety is a collective responsibility. Sharing the DART rate and its implications with the entire organization fosters a sense of collective ownership. It not only educates employees about the current safety status but also motivates them to work towards a safer environment. By making safety metrics transparent, everyone becomes a stakeholder in workplace safety.

Calculating the DART rate is not just about crunching numbers. It’s about understanding the underlying data, ensuring it’s accurate and comprehensive, and then using that information to make the workplace safer.

What Does DART Stand For

What Does a High DART Rate Mean?

A high DART rate, which stands for “Days Away, Restricted, or Transferred,” indicates a significant number of workplace injuries or illnesses that had substantial effects on employees. Specifically, it means that a higher proportion of workplace incidents resulted in employees either:

  • Missing days from work.
  • Being restricted from performing their usual job functions due to injury or illness.
  • They were transferred to another job position because they could not perform their regular duties due to injury or illness.

Several implications arise from a high DART rate:

  • Safety Concerns: A high DART rate is a clear indication that there are significant safety issues within the workplace. This might pertain to the work environment, equipment, practices, or a combination of factors.
  • Financial Impact: Incidents that result in days away, restrictions, or transfers often have associated costs. These can include compensation claims, medical expenses, and potential legal fees. Moreover, there can be indirect costs, such as lost productivity, training replacement workers, or potential increases in insurance premiums.
  • Operational Disruptions: When employees miss work or are transferred to other roles, it can disrupt regular operations. This can lead to delays, reduced productivity, and the need for temporary replacements or overtime.
  • Employee Morale and Retention: A workplace with a high frequency of significant injuries or illnesses can have detrimental effects on employee morale. Workers might feel that their well-being is not a priority, leading to reduced job satisfaction and potentially higher turnover rates.
  • Reputational Risk: Organizations with high DART rates can face reputational challenges. Stakeholders, including clients, partners, and potential employees, may view the company as neglectful of worker safety. This can have long-term implications for business relationships and recruitment.
  • Regulatory and Compliance Issues: High DART rates can attract the attention of regulatory bodies, leading to inspections, potential fines, and a mandate to implement corrective measures.

In summary, a high DART rate serves as a warning sign that significant workplace incidents are affecting employees’ ability to perform their usual tasks. It signals the need for immediate review and intervention to address the underlying causes, ensuring the safety and well-being of the workforce.

8 Tips On How To Maintain a Low DART Rate

Maintaining a low DART rate is crucial for ensuring a safe work environment and minimizing operational disruptions. Here are eight tips to help organizations sustain a low DART rate:

  • Regular Safety Training: Continually educate employees about safety protocols, equipment handling, and hazard recognition. Regular refreshers can help ingrain safe practices and keep safety at the forefront of everyone’s mind.
  • Hazard Identification and Risk Assessment: Proactively identify potential hazards in the workplace. Conduct regular risk assessments to determine areas of vulnerability and implement measures to mitigate identified risks.
  • Invest in Quality Equipment: Ensure that all tools and machinery are of high quality and maintained in good working condition. Using outdated or malfunctioning equipment can increase the risk of injuries.
  • Engage Employees in Safety Decisions: Involve workers in safety discussions and encourage them to report unsafe conditions or practices. When employees feel that their voices are heard, they are more likely to take ownership of safety protocols.
  • Implement a Robust Reporting System: Establish a straightforward and non-punitive reporting system for injuries and near misses. By analyzing these reports, organizations can identify patterns and proactively address recurrent issues.
  • Promote a Safety Culture: Leadership should prioritize safety at all levels of the organization. When leaders demonstrate a commitment to safety, it sets the tone for the entire company. Celebrate safety milestones and recognize employees who contribute to a safer work environment.
  • Stay Updated with Regulatory Changes: Regulations and best practices can evolve. By staying informed about changes and adapting accordingly, organizations can ensure they’re always in line with the latest safety standards.
  • Periodic Reviews and Audits: Conduct regular safety audits to assess the effectiveness of current safety measures. These reviews can help identify areas of improvement and ensure that the organization remains proactive in its approach to workplace safety.

By implementing these tips, organizations can create a safer work environment, reduce the number of incidents leading to days away, restricted duties, or transfers, and maintain a low DART rate. A consistent focus on safety not only protects employees but also contributes to operational efficiency and a company’s reputation.


In the intricate landscape of occupational safety, the DART rate stands out as a beacon, guiding organizations towards improved practices and safer work environments. As we’ve explored in this guide, understanding and optimizing this metric is not merely about compliance but encapsulates the very essence of ensuring employee well-being. A company that places emphasis on its DART rate is one that values its workforce, recognizing that behind each statistic is a human story.

By differentiating between metrics, accurately calculating the DART rate, and implementing strategies to maintain a low rate, organizations not only protect their employees but also fortify their reputation and bottom line. As we move forward, let the DART rate serve as a reminder that safety is not just a responsibility, but a commitment to excellence, care, and continuous improvement.

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Adeel Rashid

Adeel Rashid is a seasoned expert in the occupational health and safety field, providing valuable insights and practical advice through his writing. He is dedicated to enhancing workplace safety and shares his extensive knowledge across different sectors, aiding in the promotion of a safety-conscious work environment.