What is the correct order of hazard controls in OH&S, from first to last?

• A. Engineering, Administrative, PPE
• B. Administrative, Engineering, PPE
• C. PPE, Engineering, Administrative
• D. Engineering, PPE, Administrative

Answer: (A)

Hazard controls in OH&S are arranged to reduce risk by addressing the hazard at the source before relying on people to protect themselves. Engineering controls come first because they physically remove or minimize the hazard from the work environment—things like guards on machines, ventilation, or redesigns that eliminate the exposure. If some exposure remains, administrative controls are used next; these change how work is performed through training, procedures, scheduling, and job rotation to limit the time or manner of exposure. PPE is the last line of defense, used when hazards can’t be fully controlled by engineering or administrative measures, and its effectiveness depends on proper use and compliance. So the best order from first to last is engineering controls, then administrative controls, then personal protective equipment.