What is a Job Safety Analysis (JSA)?
A JSA is a systematic procedure that focuses on the relationship between the worker, the task, the tools, and the work environment. It aims to identify hazards before they occur.
Once hazards are identified in the analysis, safety professionals and frontline supervisors collaborate to eliminate or reduce them to an acceptable risk level.
When Should You Perform a JSA?
While it would be ideal to conduct a JSA for every task, time constraints usually require prioritization. High-priority tasks should be analyzed first.
OSHA recommends focusing on jobs with the highest injury or illness rates, jobs with the potential to cause severe disabling injuries, or jobs that are completely new to your operation.
- Jobs with a high history of accidents or near-misses.
- Jobs where a simple human error could lead to a severe accident or fatality.
- Complex jobs requiring written instructions.
- Jobs that have undergone recent changes in process or equipment.
Step-by-Step JSA Process
The first step is selecting the job to be analyzed and involving the employees who actually perform it. Employee input is critical because they understand the unseen difficulties of the task.
Next, break the job down into its fundamental sequence of steps. Be careful not to make the steps too broad (missing hazards) or too detailed (making the JSA overwhelmingly long). Usually, 10 steps or fewer is ideal.
- Step 1: Define the job and consult with workers.
- Step 2: Break the job into chronological steps.
- Step 3: Identify potential hazards associated with each step.
- Step 4: Determine preventive measures (controls) to mitigate the identified hazards.
Identifying Hazards and Controls
For each step, ask what could go wrong. Could the worker get caught in moving parts? Is there a risk of chemical exposure, ergonomic strain, or extreme heat? Documenting the "what if" scenarios is the core of the analysis.
Finally, apply the hierarchy of controls. Can the hazard be eliminated entirely? Can you implement engineering controls like machine guards? If not, specify the exact administrative procedures and Personal Protective Equipment (PPE) required.
Frequently asked questions
What is the difference between a JSA and a JHA?
In practice, there is no difference. Both terms refer to the same analytical process of breaking down a task to find and mitigate hazards. OSHA commonly uses Job Hazard Analysis (JHA).
Who should write a Job Safety Analysis?
A JSA is best written collaboratively by the supervisor, the safety manager, and the workers who actively perform the task to ensure all practical realities are captured.
Is a JSA a legal requirement by OSHA?
While OSHA does not have a specific standard mandating JSAs for all jobs, JSAs are heavily recommended as a best practice to comply with the General Duty Clause and specific standard requirements (like PPE assessments).
How often should a JSA be reviewed?
A JSA should be reviewed periodically, typically annually, or immediately after an accident, near-miss, or a change in the procedure or equipment.