What is Job Safety Analysis (JSA)? JSAs are used to describe how to perform a task step-by-step, any hazards associated with a task, and controls to mitigate these hazards. JSAs can be used to educate employees on safe practices prior to utilizing equipment. When should a JSA be created? JSAs should be developed for all equipment and specific operations that present safety hazards and/or concerns. Employees shall be trained on and have a good understanding of the instructions and hazards listed in the JSA prior to engaging in such work practices.