DART Rate Calculator
Calculate the Days Away, Restricted, or Transferred (DART) rate for your workplace. This OSHA-standard metric helps measure workplace safety performance and injury severity.
| Industry | Average DART Rate | Your Comparison |
|---|---|---|
| Construction | 2.0 | - |
| Manufacturing | 2.5 | - |
| Healthcare | 3.5 | - |
| Retail Trade | 2.2 | - |
| Transportation | 3.8 | - |
| All Private Industry | 1.5 | - |
Table of Contents
What is the DART Rate?
The DART rate (Days Away, Restricted, or Transferred) is a workplace safety metric that measures the number of recordable incidents resulting in days away from work, restricted work activity, or transfer to another job. It's calculated per 100 full-time equivalent (FTE) employees and is a key indicator used by OSHA (Occupational Safety and Health Administration) to evaluate workplace safety performance.
The DART rate specifically focuses on more serious workplace injuries and illnesses that impact an employee's ability to perform their normal job duties. Unlike the Total Recordable Incident Rate (TRIR), which counts all recordable incidents, DART only includes cases with more significant consequences.
What DART Stands For:
- D - Days Away: Injuries or illnesses severe enough that the employee cannot work
- A - (from work)
- R - Restricted: Cases where employees can work but with limitations
- T - Transferred: Cases requiring transfer to a different job
Why is DART Rate Important?
The DART rate serves several critical purposes for businesses and regulators:
1. Safety Performance Indicator
DART rate provides a standardized measure of serious workplace injuries, allowing companies to track safety performance over time and identify trends that need attention.
2. Regulatory Compliance
OSHA uses DART rates to identify high-hazard workplaces for inspections. Companies with DART rates significantly above industry averages may face increased regulatory scrutiny.
3. Insurance Implications
Workers' compensation insurers often use DART rates in their Experience Modification Rate (EMR) calculations, directly impacting insurance premiums. Lower DART rates typically mean lower insurance costs.
4. Business Opportunities
Many companies require contractors to maintain DART rates below certain thresholds to qualify for projects. A high DART rate can disqualify businesses from lucrative contracts.
5. Financial Impact
Each DART case represents significant direct costs (medical, workers' comp) and indirect costs (lost productivity, training replacements, investigation time). The average cost per DART case can range from $40,000 to $80,000 or more.
How to Calculate DART Rate
The DART rate is calculated using the following formula:
The multiplier of 200,000 represents the base hours for 100 full-time employees working 40 hours per week for 50 weeks (100 × 40 × 50 = 200,000). This standardization allows comparison between organizations of different sizes.
Step-by-Step Calculation:
- Count DART Cases: Total all incidents involving days away from work, restricted work activity, or job transfer
- Calculate Total Hours: Sum all hours worked by all employees during the period
- Apply the Formula: Multiply DART cases by 200,000, then divide by total hours
DART Components Explained
Days Away from Work
These are cases where the injury or illness is severe enough that the employee cannot report to work at all. Common examples include:
- Fractures requiring recovery time
- Surgical procedures
- Severe sprains or strains
- Serious burns
Restricted Work Activity
The employee can work but cannot perform all their normal job functions. Examples include:
- Limited lifting capacity
- Restricted movement or mobility
- Cannot use certain equipment
- Reduced work hours due to injury
Job Transfer
The employee is moved to a different job because they cannot perform their regular duties. This often occurs when:
- Physical limitations prevent normal job tasks
- Medical restrictions require lighter work
- Temporary assignment to another department
Important: Counting Rules
Each case is counted only once, even if it involves multiple categories. For example, if an injury results in 3 days away followed by 2 weeks of restricted duty, it counts as 1 DART case, not 2.
How to Use This Calculator
- Enter DART Cases: Input the total number of cases involving days away, restricted duty, or job transfer. You can also break this down by category.
- Enter Total Hours: Input the total hours worked by all employees during the measurement period. If you don't know this, use the "Estimate Hours" button.
- Review Results: The calculator shows your DART rate, safety rating, and comparison to industry benchmarks.
Estimating Hours Worked
If you don't have exact hours data, you can estimate using:
For example: 250 employees × 40 hours × 50 weeks = 500,000 hours
Interpreting Your Results
| DART Rate | Rating | Interpretation |
|---|---|---|
| 0 - 1.0 | Excellent | Outstanding safety performance; well below industry average |
| 1.0 - 2.0 | Good | Better than average; solid safety program in place |
| 2.0 - 3.5 | Average | Typical for many industries; room for improvement |
| 3.5+ | Poor | Above average; immediate attention to safety practices needed |
Strategies to Reduce DART Rate
1. Strengthen Safety Culture
- Leadership commitment to safety
- Employee involvement in safety programs
- Regular safety communications
- Recognition for safe behaviors
2. Improve Hazard Identification
- Regular workplace inspections
- Job hazard analyses for high-risk tasks
- Near-miss reporting programs
- Root cause analysis of incidents
3. Enhance Training Programs
- Job-specific safety training
- Ergonomics awareness
- Proper lifting techniques
- Equipment operation certification
4. Implement Return-to-Work Programs
- Modified duty options
- Early intervention for injuries
- Coordination with healthcare providers
- Gradual return to full duty
Related Safety Metrics
| Metric | What It Measures | Formula |
|---|---|---|
| TRIR (Total Recordable Incident Rate) | All recordable incidents | (Recordable Cases × 200,000) / Hours Worked |
| LTIR (Lost Time Incident Rate) | Cases with lost work time only | (Lost Time Cases × 200,000) / Hours Worked |
| Severity Rate | Days lost per incident | (Days Lost × 200,000) / Hours Worked |
| EMR (Experience Modification Rate) | Insurance cost modifier | Based on claims history vs expected |
Frequently Asked Questions
How is DART different from TRIR?
TRIR (Total Recordable Incident Rate) counts all recordable incidents, including medical treatment cases. DART only counts the more serious cases involving days away from work, restricted duty, or job transfer. DART is generally a subset of TRIR and focuses on incident severity rather than frequency.
What hours should I include in the calculation?
Include all hours actually worked by all employees, including overtime. Do not include vacation, sick leave, holidays, or other non-work time. Contractors' hours are typically tracked separately.
How often should I calculate DART rate?
Most companies calculate DART rate quarterly and annually. Monthly calculations may show high variability, especially in smaller organizations. OSHA requires annual reporting for certain employers.
Can DART rate be zero?
Yes, a DART rate of zero is achievable and indicates no DART cases during the measurement period. Many companies set "zero DART" as a safety goal, though maintaining it long-term requires excellent safety programs.
What is a good DART rate for my industry?
Good DART rates vary by industry. The Bureau of Labor Statistics publishes annual data on injury rates by industry. Generally, a DART rate below your industry's average indicates better-than-average safety performance.
How does DART rate affect insurance costs?
Your DART rate influences your Experience Modification Rate (EMR), which directly impacts workers' compensation premiums. Higher DART rates generally lead to higher EMR and increased insurance costs. Reducing DART rate can save significant money on insurance.