Safety Incident Rate (SIR)
Number of workplace safety incidents per 200,000 hours worked
FORMULA
SIR = (Total Incidents / Total Hours Worked) × 200,000
Alternate Calculations
Lost Time
(Lost Time Incidents / Hours Worked) × 200,000What is Safety Incident Rate?
Safety Incident Rate measures workplace injuries and incidents per standard 200,000 hours (1-year equivalent for 100 workers at 40 hrs/week). Universal construction and operations metric.
Lower rates indicate safer operations. Industry benchmark varies by work type. Critical for OSHA reporting and insurance/bonding.
Chart
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0incidents · JunSafety Incident Rate
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Sample Data
| month | incidents | hours | sir |
|---|---|---|---|
| Jan | 2 | 45,000 | 8.89 |
| Feb | 1 | 48,000 | 4.17 |
| Mar | 2 | 50,000 | 8 |
| Apr | 0 | 52,000 | 0 |
| May | 1 | 54,000 | 3.7 |
| Jun | 0 | 56,000 | 0 |
Required Data Columns
incidentshours_workedsir