Calculating Monthly Dart Rate

DART Rate Formula:

\[ \text{Monthly DART} = \frac{\text{monthly DART cases} \times 200000}{\text{monthly hours}} \times 12 \text{ (annualized)} \]

Monthly DART Rate (annualized):

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1. What is DART Rate?

The DART (Days Away, Restricted, or Transferred) rate is a safety metric that measures the number of recordable incidents per 200,000 work hours that result in days away from work, restricted work activity, or job transfer.

2. How Does the Calculator Work?

The calculator uses the DART rate formula:

\[ \text{Monthly DART} = \frac{\text{monthly DART cases} \times 200000}{\text{monthly hours}} \times 12 \text{ (annualized)} \]

Where:

DART cases — Number of recordable incidents resulting in days away, restricted work, or transfer
200,000 — Base for 100 full-time workers (working 40 hrs/week, 50 weeks/year)
Monthly hours — Total hours worked by all employees in the month
12 — Annualization factor

Explanation: The formula standardizes injury rates across organizations of different sizes by using a common base of 200,000 work hours.

3. Importance of DART Rate

Details: DART rate is a key OSHA metric that helps organizations track serious workplace injuries and illnesses. It's often used for benchmarking safety performance and identifying areas for improvement.

4. Using the Calculator

Tips: Enter the number of DART cases and total hours worked by all employees in the month. The calculator will provide the annualized DART rate per 200,000 work hours.

5. Frequently Asked Questions (FAQ)

Q1: What's considered a good DART rate?
A: Lower is better. Industry averages vary, but rates below 2.0 are generally considered good, while rates above 4.0 may indicate safety concerns.

Q2: Why annualize the monthly rate?
A: Annualizing allows for better comparison across time periods and with industry benchmarks that are typically reported annually.

Q3: What's the difference between TRIR and DART?
A: TRIR (Total Recordable Incident Rate) includes all recordable incidents, while DART only includes those resulting in days away, restricted work, or transfer.

Q4: How should hours be calculated for part-time workers?
A: Include actual hours worked by all employees, including part-time and temporary workers.

Q5: When should DART cases be recorded?
A: Cases should be recorded in the month when the incident occurred, not when it was reported or resolved.