Job Safety Analysis (JSA)

A Job Safety Analysis (JSA) is a step-by-step review of a task that identifies the hazards involved and the controls needed to carry it out safely. Every contractor working at a Timewise site is expected to complete a JSA before starting work, and to review it with their crew at the job.

Why we use JSAs

Most incidents happen during routine tasks where a hazard was overlooked or a control was missed. Working through a JSA before the job starts gives the crew a shared understanding of what could go wrong and how each risk will be managed — before anyone is exposed to it.

How to complete a JSA

1. Break the job into steps. List the task in the order it will be performed, one step at a time.
2. Identify the hazards in each step. Consider people, equipment, the environment, energy sources, and anyone working nearby.
3. Define the controls. For each hazard, state how it will be eliminated or controlled — and confirm the control is in place before the step begins.
4. Review it with the crew. Everyone doing the work signs on to the JSA and understands their part in it.
5. Stop and revise if conditions change. A JSA is a live document. If the scope, the site, or the conditions change, update it before continuing.

Before you start work

• The JSA is completed and signed by everyone performing the task.
• Required permits are in place (see Forms and Work Order).
• The Golden Rules and Lifesaving Rules that apply to the task have been reviewed.
• Everyone understands their authority to stop the job if a control is missing.

If you have questions about completing a JSA for a specific task, please contact the TPG HSSE team.