Free HSE tool · Risk Assessments
Job Safety Analysis (JSA/JHA)
A job safety analysis — job hazard analysis, JHA, in the US vocabulary — is a risk assessment for one job: the job broken into its steps, each step hazards named, the existing controls recorded, and the gaps closed before the work starts. It is the most effective accident-prevention document in the toolbox because it matches the hazard to the moment in the job when it appears.
Free Job Safety Analysis (JSA / JHA) Builder
Break the job into steps, name the hazards, score each step, close the gaps — then print the signed JSA.
| # | Task step | Hazard(s) | Existing controls | L | C | Score | Control to add | Priority |
|---|
Build the JSA below: add a step, name its hazards and existing controls, score it, and add the control that closes the gap — then print the finished JSA as a signed document to carry on the job. OSHA, the US Coast Guard, the oil and gas industry and most UK site safety plans all use the JSA; the method is the same everywhere.
How to use the tool
- Choose the job and break it into 5–10 steps — big enough to manage, small enough that each step has one clear action
- For each step, list the hazards that step creates — what can go wrong at this moment
- Record the controls that already exist for that step — the guard, the procedure, the PPE, the training
- Score likelihood and consequence for the step — the tool calculates the band and the priority
- Add the control that closes the gap, in hierarchy order, and re-score if needed — then print and brief the crew on the JSA before the work starts
Worked example
A line-clearing job on a 12 m platform. Step 1 — approach and stage tools: hazard, dropped object; existing, no net below; score 3×3=9; added control, tool lanyards plus an exclusion zone; residual 2×3=6. Step 2 — isolate and lock out: hazard, stored energy; existing, the LOTO procedure; score 2×5=10; added, verification by try-out; residual 2×5=10 — the job needs the permit and the verifier, and the JSA says so on paper. Step 3 — clear the line: hazard, falling debris; existing, face protection; score 3×2=6; added, the below-crew hold point; residual 2×2=4. The crew now holds a one-page document that names the three moments that matter — that is the JSA doing its job.
Standard & legal context
The JSA is central to OSHA process safety and HAZWOPER practice and is the standard hazard-control document in US industry — the OSHA 1910.120(h) hazard assessment is the JSAs formal cousin. The UK equivalent is the risk assessment of the specific task under the MHSWR, and IOSH and NEBOSH teach the JSA as the applied form of the five-step method. ISO 45001 does not name the JSA, but clause 6.1.2 hazard identification for work activities is exactly the JSAs scope. Wherever you work, the JSA is the document that turns the policy-level assessment into the step-level reality.
Common mistakes
- Writing the steps from memory instead of watching the job done — the JSA of a job you have not watched misses the shortcut that causes the accident
- Listing every hazard on every step — the JSA names the step-specific hazards; the general ones live in the general assessment
- Stopping at PPE — if the only new control is PPE, the hierarchy says look again
- Not briefing the crew on the JSA — an unread JSA is a souvenir, not a control
Need the sign-off, not just the tool?
The tool is the preparation; the sign-off is the professional. For the statutory assessments, the audits, the ISO 45001 implementation and the training that comes with them, ask Muhammad Umer — 8+ years across Iraq, KSA and Pakistan, and the programme runs through umer-hse.pro. One message gets the written scope.
Common questions
Job Safety Analysis (JSA/JHA) — answered
What is a job safety analysis?
A JSA (or job hazard analysis, JHA) is a step-by-step hazard assessment of one job: each step of the task, the hazards in that step, the existing controls, the controls needed, and the risk score — documented before the work starts and briefed to the crew.
What is the difference between a JSA and a JHA?
Practically none — JSA (job safety analysis) is the more common term in the UK and the Gulf, JHA (job hazard analysis) in the US. The method, the format and the purpose are identical; the industry and the standard use the labels interchangeably.
How many steps should a JSA have?
Five to ten. Fewer and the job is not decomposed; more and you are writing a method statement. The test is whether each step has one clear action that a worker could be caught doing.
Is a JSA required by OSHA?
OSHA standards require hazard assessments in specific universes — HAZWOPER 1910.120(h) and process safety 1910.119 — and the general duty clause covers the rest. The JSA is the industry standard way of meeting all of it, and most US site safety plans require it for non-routine work.
When should a JSA be done?
Before any non-routine, high-risk or new task — and reviewed after any incident or change to the method. Routine tasks get the JSA once and a periodic review; the non-routine ones get one every time.
Can I print the JSA as a PDF?
Yes — the Print button uses your browser print-to-PDF. The layout is designed so the printed JSA fits one or two pages: the header, the step table, and the sign-off line.
Keep building
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THE HEALTH AND SAFETY is an education and knowledge network. The tools are free and open; the professional assessments and audits run through umer-hse.pro.
Safety disclaimer
These tools are practical guidance, built to the UK baseline with the US equivalents named on each page. They do not replace a competent person assessment for high-risk work, a statutory assessment, or the advice of your insurer. Where a document has legal force — the fire risk assessment, the COSHH register, the permit to work — the responsible person owns it. Use the tool as the preparation, and the competent person as the sign-off.