What Is the IOSH 5x5 Matrix? A simple yet powerful tool for assessing workplace risks based on likelihood and severity.

🔹 Understanding the Matrix
Rate risks from 1–25 by multiplying likelihood and severity for clear prioritisation.

🔹 Applying the Matrix
Identify hazards, implement controls, and ensure compliance with safety standards.

🔹 Benefits of the Matrix
Structured risk management improves visibility, prioritisation, and accountability.

🔹 Learn IOSH the Right Way
Master risk assessment tools with IOSH-certified courses from The Knowledge Academy.

👉 Learn more: https://www.theknowledgeacademy.com/courses/iosh/

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1. What Is the
IOSH 5x5 Matrix?

2. Understanding the
Matrix

likelihood and severity, each rated from 1 to 5. 
Multiplying these gives a risk rating from 1 (low)
to 25 (high).
01

3. 02
Applying the Matrix 

risk activities, implement controls, and ensure
safer working environments.
It supports informed decision-making and
compliance with health and safety standards.

4. 03
Benefits of Using
the Matrix

approach to risk management.
It improves hazard visibility, prioritisation, and
accountability across teams. 

5. offers IOSH-certified courses to help you apply
tools like the 5x5 Matrix with confidence.
The Knowledge Academy
Assess Risks with
IOSH Confidence