Which statement lists the five levels of the hierarchy of hazard controls from most to least effective?

Which statement lists the five levels of the hierarchy of hazard controls from most to least effective?

• A. PPE, administrative controls, engineering controls, substitution, elimination.
• B. Elimination, substitution, engineering controls, administrative controls, PPE.
• C. Substitution, elimination, PPE, engineering controls, administrative controls.
• D. Engineering controls, PPE, elimination, substitution, administrative.

Answer: (B)

The main idea is the hierarchy of hazard controls—the best way to protect workers is to remove or neutralize the hazard first, then use barriers or changes to how work is done, and only finally rely on personal protection. From most to least effective: elimination, substitution, engineering controls, administrative controls, PPE. Elimination removes the hazard entirely from the workplace, which means no exposure risk. Substitution replaces the hazard with a less dangerous option. Engineering controls physically separate people from the hazard (like guards, ventilation, or isolation). Administrative controls change how work is performed (training, procedures, rotation, signage) to reduce exposure. Personal protective equipment is the last line of defense and relies on correct use, fit, and compliance, so it’s the least reliably protective. So the correct sequence reflects removing the hazard first, then reducing it, then isolating people, then guiding behavior, and finally protecting individuals with PPE. The other orders mix these steps in a less effective progression, starting with PPE or misplacing elimination and substitution.

The main idea is the hierarchy of hazard controls—the best way to protect workers is to remove or neutralize the hazard first, then use barriers or changes to how work is done, and only finally rely on personal protection.

From most to least effective: elimination, substitution, engineering controls, administrative controls, PPE. Elimination removes the hazard entirely from the workplace, which means no exposure risk. Substitution replaces the hazard with a less dangerous option. Engineering controls physically separate people from the hazard (like guards, ventilation, or isolation). Administrative controls change how work is performed (training, procedures, rotation, signage) to reduce exposure. Personal protective equipment is the last line of defense and relies on correct use, fit, and compliance, so it’s the least reliably protective.

So the correct sequence reflects removing the hazard first, then reducing it, then isolating people, then guiding behavior, and finally protecting individuals with PPE. The other orders mix these steps in a less effective progression, starting with PPE or misplacing elimination and substitution.