How is a job safety analysis (JSA) developed?

When should a job safety analysis (JSA) be done?

To ensure hazards, unwanted events and potential risks are properly captured and addressed, a job safety analysis (JSA) should be performed at the job site prior to carrying out the job.

During the assignment of a job that has inadequate or no procedures, the work team (with or without the participation of the supervisor) should complete a JSA.

At the completion of the JSA process, the supervisor should review and sign off the JSA where appropriate.

In general, a JSA should only be applied to a job when:

  • the potential risks are known to be low
  • there is no safe work procedure (SWP) or similar document
  • developing, modifying or reviewing an SWP or similar document.

When should a JSA not be done?

If a job is considered to be ‘high risk’ by the supervisor or the team, a formal risk assessment (other than a JSA) should be conducted by an appropriate team.

A JSA should not be conducted as the primary tool to identify hazards and controls where the job:

  • has the potential for serious injuries, illness, equipment damage or environmental harm
  • is new and has not been conducted before
  • is of a long duration (i.e. over one shift)
  • involves multiple work teams
  • is known to have had a history of accidents or near-misses
  • is unusual or complex
  • involves the use of new equipment, tools or chemicals
  • involves interaction with many interdependent systems (such as electrical, mechanical or hydraulic systems).


The JSA process can be summarised under the following steps:

  • document the activity - assemble those involved in the activity and, using a JSA worksheet, write down the tasks that make up the activity, step by step
  • identify the hazards - for each task, identify what part of the task may cause injury to those doing the work or to anyone else nearby
  • document the control measures - for each hazard identified, list the measures that need to be implemented to eliminate or minimise any likely risk of injury to those involved
  • identify who is responsible - document the name of the person responsible for implementing the control measure
  • monitor and review - ensure the activity is supervised to confirm the documented process is being followed, and review the JSA when
    • a documented activity changes
    • there is a change of personnel
    • after an appropriate length of time.


Appropriate training, competency and understanding of the task is required for the supervisor to:

  • determine the level of risk associated with a job attracts
  • know when to recommend carrying out a more appropriate risk assessment than a JSA.