Hierarchy of Controls
The hierarchy of controls should be referenced to determine corrective actions following an identified workplace hazard or incident
Hierarchy of Controls Overview
1. Elimination Most Effective
The primary step focused on physically removing the hazard entirely from the workplace.
Example: Abating asbestos to remove the material completely from a building structure.
2. Substitution
If elimination is not feasible, the second step is replacing the hazard with a safer alternative.
Example: Replacing elevated window washing with ground-based cleaning using telescoping extension poles.
3. Engineering Controls
Designing physical equipment or structural modifications to isolate workers from the hazard.
Example: Installing machine guarding to keep operators safe from contacting rotating parts.
4. Administrative Controls
Establishing safety policies, standard operating procedures, training, or checklists to modify work habits and processes.
Example: Implementing Lockout/Tagout (LOTO) procedures to ensure energy sources are isolated prior to maintenance.
5. Personal Protective Equipment (PPE) Least Effective
Equipment worn by workers to minimize exposure to hazards; functions as the final line of defense.
Example: Wearing earplugs to provide basic hearing protection in high-noise environments.
Additional Resources