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Podcast: The Occupational Safety Leadership Podcast
Episode: Episode 92 - 3 x 3 Risk Assessment Matrix
Description: Dr. Ayers introduces the 3×3 Risk Assessment Matrix, the simplest of the common matrix formats. The episode emphasizes that reducing the scoring options forces teams to focus on meaningful discussion, credible severity, and practical controls, rather than getting lost in numerical precision.
The 3×3 matrix is ideal for quick field-level assessments, dynamic work environments, and frontline decision-making.
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1. Structure of the 3×3 Matrix
The matrix evaluates hazards using Severity and Likelihood, each scored from 1 to 3.
Severity (1–3)
1 – Minor: First aid or negligible harm
2 – Moderate: Recordable injury or medical treatment
3 – Severe: Permanent disability or fatality
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