What is a JSA? A simple guide for contractors

A JSA — Job Safety Analysis (also called a JHA, Job Hazard Analysis) — is a simple document that breaks a task into steps, identifies the hazard in each step, and lists the controls that keep your crew safe. It is one of the most effective safety tools there is, and one of the most misunderstood.

JSA vs JHA — are they different?

No. Job Safety Analysis and Job Hazard Analysis are two names for the same thing. Use whichever your company or client prefers.

Why it matters

Two reasons. First, it works — walking through a task before you do it catches hazards you would otherwise meet the hard way. Second, it protects you. When something goes wrong, a signed JSA shows you identified the risk and controlled it. Without one, you are exposed.

The anatomy of a JSA

Every JSA has the same core structure, usually three or four columns:

• Task step: break the job into its basic steps, in order.
• Hazards: what could hurt someone in that step — falls, struck-by, caught-between, exposure.
• Controls: how you eliminate or reduce each hazard, following the hierarchy of controls.
• Risk rating: many JSAs rate each step low, medium, or high so the crew focuses on the worst risks.

Add the job details (project, date, prepared by, competent person), the PPE required, and the nearest hospital, and you have a complete JSA.

Common mistakes

• Too generic. A JSA copied from another job does not reflect today's hazards. Tailor it.
• Controls that are not specific. "Be careful" is not a control. "Guardrails at the leading edge" is.
• No signatures. An unsigned JSA is a draft, not a record.

Build one in minutes

You do not need a Word template from 2014. Pick your tasks, and the hazards and controls fill in — then rate the risk, add PPE, and download a clean PDF.