Quality Tool
JHA / JSA Risk Matrix
Break a job into steps, list hazards, score severity × likelihood, and rank risks on a 5×5 matrix to prioritise control measures.
Free · runs in your browser
Job hazard risk matrix
Break the job into steps, list each hazard, rate severity and likelihood, and the matrix ranks them by risk = severity × likelihood so you can prioritise control measures.
| Hazard | Severity | Likelihood | Risk | |
|---|---|---|---|---|
| 10 | ||||
| 12 | ||||
| 8 |
High: 0Medium: 3Low: 0
Risk matrix (severity × likelihood)
| L1 | L2 | L3 | L4 | L5 | |
| S5 | 5 | 10·1 | 15 | 20 | 25 |
| S4 | 4 | 8 | 12·1 | 16 | 20 |
| S3 | 3 | 6 | 9 | 12 | 15 |
| S2 | 2 | 4 | 6 | 8·1 | 10 |
| S1 | 1 | 2 | 3 | 4 | 5 |
·n = number of items currently at that cell.