JHA (Job Hazard Analysis)
A Job Hazard Analysis is a systematic process for identifying potential hazards associated with each step of a work task and determining the best way to eliminate or control those hazards. Also known as a Job Safety Analysis (JSA), the JHA breaks a job into individual steps, identifies the hazards at each step, and prescribes preventive measures. OSHA recommends JHAs as a key component of an effective safety and health program under its Recommended Practices for Safety and Health Programs.
The Job Hazard Analysis is a proactive safety tool that helps construction companies identify and mitigate hazards before work begins rather than reacting to incidents after they occur. The process involves three core steps: breaking the job down into a sequence of tasks, identifying the hazards associated with each task (including struck-by, fall, caught-in, electrical, chemical, and ergonomic hazards), and determining preventive measures for each identified hazard such as engineering controls, administrative controls, or personal protective equipment.
OSHA strongly recommends JHAs for jobs with the highest injury or illness rates, jobs where a single error could lead to a severe injury or death, jobs that are new to the operation, and jobs complex enough to require written instructions. In construction, JHAs are commonly performed for activities such as excavation and trenching, steel erection, concrete pours, crane lifts, demolition, and work at heights. Many general contractors require subcontractors to submit JHAs as part of their site-specific safety plans before mobilizing to a project.
The JHA serves as both a planning document and a training tool. Before starting a task, the crew reviews the JHA to understand the hazards they will encounter and the protective measures they should follow. This review process often takes the form of a toolbox talk. Completed JHAs should be documented and retained as part of the company's safety records. During OSHA inspections, having current JHAs for active work tasks demonstrates a proactive approach to hazard identification and can influence the outcome of any citations. Tracking JHA completion alongside worker certifications and training records provides a comprehensive picture of a company's safety management system.