Calculating Osha Dart Rate

OSHA DART Rate Calculator

The OSHA DART (Days Away, Restricted, or Transferred) rate is a key metric used to track workplace injuries and illnesses that result in lost work time or require employees to be moved to different jobs. A lower DART rate indicates a safer workplace.

Understanding the DART Rate Calculation

The DART rate is calculated using the following formula:

DART Rate = (Number of Recordable Incidents * 200,000) / Total Number of Employee Work Hours

The '200,000' in the formula represents the number of hours 100 full-time employees would work in a year (100 employees * 40 hours/week * 50 weeks/year = 200,000 hours). This standardizes the rate, allowing for comparisons across companies of different sizes.

A lower DART rate is desirable, signifying a safer working environment. Companies should use this rate to identify trends, implement safety improvements, and benchmark their performance against industry averages.

function calculateDartRate() { var totalWorkHoursInput = document.getElementById("totalWorkHours"); var recordableIncidentsInput = document.getElementById("recordableIncidents"); var dartRateResultDiv = document.getElementById("dartRateResult"); var totalWorkHours = parseFloat(totalWorkHoursInput.value); var recordableIncidents = parseFloat(recordableIncidentsInput.value); if (isNaN(totalWorkHours) || isNaN(recordableIncidents) || totalWorkHours <= 0) { dartRateResultDiv.innerHTML = "Please enter valid numbers for work hours and incidents. Total work hours must be greater than zero."; return; } var dartRate = (recordableIncidents * 200000) / totalWorkHours; dartRateResultDiv.innerHTML = dartRate.toFixed(2); }