Task Hazard Analysis (THA)
In performing a THA, OSHA recommends that the employees that engage in the task to be analyzed be involved. Health and safety professionals should prioritize THAs according to the risk of injury inherent in various tasks, beginning with those that pose the gravest risk to workers.
Job Hazard Analysis (JSA)
A job hazard analysis is a technique that focuses on job position as a way to identify hazards before they occur. It focuses on the relationship between the worker, the task, the tools, and the work environment.
Activity Hazard Analysis (AHA)
AHAs shall define the steps being performed within the activity, task or Defined Feature of Work (DFOW), and identify the work sequences, specific anticipated hazards, site conditions, equipment, materials, personnel and the control measures to be implemented.