Which option is NOT typically listed as part of the four-system approach to job hazard analysis?

Which option is NOT typically listed as part of the four-system approach to job hazard analysis?

• A. Work sampling
• B. Absentee method
• C. Recall and check method
• D. One-on-one observation method

Answer: (A)

Focusing on gathering hazard information through how a job is actually performed is what this four-system approach emphasizes. It relies on methods that draw on what workers recall about steps and hazards, plus direct observation of the task, and data sources related to how the job is actually executed or how injuries/absences surface. Work sampling, by contrast, is a time-study technique used to estimate how much of the time a worker spends on various activities. It’s designed to measure time distribution rather than to identify hazards in each step of a task. Because JHA aims to pinpoint potential hazards in specific steps, work sampling doesn’t belong to this framework, making it the best choice for not being typically listed as part of the four-system approach. The other methods align with hazard-identification activities through memory, verification, and direct observation.

Focusing on gathering hazard information through how a job is actually performed is what this four-system approach emphasizes. It relies on methods that draw on what workers recall about steps and hazards, plus direct observation of the task, and data sources related to how the job is actually executed or how injuries/absences surface. Work sampling, by contrast, is a time-study technique used to estimate how much of the time a worker spends on various activities. It’s designed to measure time distribution rather than to identify hazards in each step of a task. Because JHA aims to pinpoint potential hazards in specific steps, work sampling doesn’t belong to this framework, making it the best choice for not being typically listed as part of the four-system approach. The other methods align with hazard-identification activities through memory, verification, and direct observation.