In workplace safety, what does 'hierarchy of controls' refer to?

The 'hierarchy of controls' is a critical concept in workplace safety that involves a systematic approach to minimize or eliminate exposure to hazards. It emphasizes prioritizing the most effective measures to protect workers from potential risks. The hierarchy typically consists of several levels, starting with the most effective measures at the top and moving to less effective ones at the bottom.

The most effective controls involve eliminating the hazard entirely or substituting it with a safer alternative. If elimination is not possible, the next step involves engineering controls, such as redesigning equipment to reduce risks. Administrative controls, which include changes in workplace policies or procedures to limit exposure, come next. Finally, personal protective equipment (PPE) is considered a last line of defense, as it does not eliminate the hazard but instead protects the worker from exposure.

This structured approach ensures that employers can implement the most effective safety measures, thereby significantly reducing risks in the workplace. The other choices do not adequately capture the full scope and purpose of the hierarchy of controls, which is fundamentally about prioritizing safety interventions based on their effectiveness in reducing exposure to hazards.