| S | Severity |
| 5 | Possibility of death, injury or illness with permanent total disability or very severe. |
| 4 | Injury or illness with temporary total disability, permanent partial or severe. |
| 3 | Injury or illness with temporary partial disability, or moderately severe. |
| 2 | Possibility of injury without disability or mild health problems. |
| 1 | No injuries nor health problems. |