| Predictors | Mediator | Outcomes | |
| Social safety proficiency | Recordable injuries | Lost time injuries | |
| System of safety management practices | 0.477** | −0.114 | −0.190 |
| Social safety proficiency | NA | −0.396* | −0.325* |
| Adjusted R² | 0.227 | 0.141 | 0.131 |