What Is a Job Safety Analysis?

A Job Safety Analysis (JSA) — also called a Job Hazard Analysis (JHA) — is a systematic method for identifying hazards associated with each step of a job and determining the best way to perform the job safely. It breaks work into individual tasks, identifies what could go wrong at each step, and documents the controls that eliminate or reduce each hazard.

OSHA recommends JSAs for all jobs, and requires hazard assessments under the General Duty Clause (Section 5(a)(1)). Industries like construction, oil and gas, manufacturing, and utilities use JSAs daily as a core part of their safety management systems. A well-written JSA is both a planning tool and a training document.

The JSA process follows a simple framework: (1) select the job, (2) break it into steps, (3) identify hazards at each step, (4) determine preventive controls using the hierarchy of controls — elimination, substitution, engineering controls, administrative controls, and PPE. The result is a documented safety plan that workers review before starting the task.

JSAs are living documents. They should be reviewed and updated whenever the job process changes, after an incident or near-miss, when new hazards are identified, or when new employees are assigned to the task. A JSA that sits in a filing cabinet doesn't prevent injuries — one that's reviewed at pre-job meetings does.

What's covered

• Job Identification: Job/task title and location, Department and supervisor, Analysis and review dates, Required PPE and permits
• Hazard Analysis: Step-by-step job breakdown (up to 6 steps), Hazard identification per step, Preventive controls per hazard, Hierarchy of controls application
• Risk Assessment: Overall risk level rating, Residual risk after controls, Risk comparison (before/after), Go/no-go decision support
• Emergency & Training: Emergency procedure documentation, First aid location, Training requirements, Worker competency verification

Why this checklist

OSHA expects hazard assessments for every job. The General Duty Clause requires employers to provide a workplace free from recognized hazards. A documented JSA demonstrates due diligence and systematic hazard identification — exactly what OSHA looks for during inspections.

Step-by-step format catches hazards others miss. When you break a job into individual steps, hazards that are invisible in the big picture become obvious. "Set up scaffolding" might seem routine until you analyze each step: transporting components (pinch points), assembling frames (fall from height), installing planks (struck-by).

Controls are documented at the point of hazard. Each hazard gets its own control measure, documented right next to the hazard it addresses. Workers see exactly what to do at each step — not a generic list of safety rules, but specific actions tied to specific risks.

Pre-job review tool for crews. The best JSAs are reviewed with the crew before work begins. Workers discuss each step, confirm they understand the hazards, and verify controls are in place. This five-minute review has prevented more injuries than any safety poster.

How to Complete a Job Safety Analysis

• Select and describe the job — Choose a specific job or task to analyze. Be specific — "roof repair" is better than "construction work." Record the location, department, and who prepared the analysis. Include the supervisor who will oversee the work.
• Identify PPE and permits — List all personal protective equipment required for the job. Note any permits needed — hot work permits, confined space entry permits, excavation permits, or electrical work permits. These requirements should be confirmed before work begins.
• Break the job into steps — List each step in the order it will be performed. Use action verbs: "Position ladder against wall," "Connect power supply," "Lower load to ground level." Keep steps specific enough to identify hazards but broad enough to be practical — typically 4-8 steps per job.
• Identify hazards at each step — For each step, ask: What could go wrong? Consider falls, struck-by, caught-in/between, electrical contact, chemical exposure, heat/cold, noise, ergonomic strain, and environmental hazards. Talk to workers who have done the job — they know where the real dangers are.
• Determine preventive controls — For each hazard, document how to eliminate or reduce it. Follow the hierarchy: Can you eliminate the hazard? Substitute something safer? Add engineering controls (guardrails, ventilation)? Use administrative controls (procedures, training)? As a last resort, specify PPE.
• Assess risk and finalize — Rate the overall risk level and residual risk after controls are applied. Document emergency procedures and training requirements. Review the completed JSA with all workers before the job begins. Sign and date the document.

Common Mistakes in Job Safety Analysis

Steps too vague to identify hazards. "Do the work" as a job step is useless for hazard identification. Break it down: "Cut pipe with reciprocating saw," "Remove old fitting," "Apply thread sealant," "Install new valve." Each specific action has specific hazards you can identify and control.

Listing only PPE as controls. PPE is the last resort in the hierarchy of controls, not the first. If every hazard control is "wear safety glasses" or "use gloves," the JSA isn't doing its job. Look for engineering and administrative controls first — guardrails before harnesses, ventilation before respirators.

Writing the JSA at a desk instead of the job site. The best JSAs are written by people who know the job, at the location where the work will happen. Walking through the job steps at the actual site reveals hazards that aren't obvious from an office — uneven terrain, overhead obstructions, nearby traffic, weather exposure.

Not involving the workers. Safety managers who write JSAs without input from the workers who do the job miss critical hazards. The worker who has done this task 500 times knows exactly where the pinch points are, which step is awkward, and what goes wrong when conditions change.

Never updating the JSA. A JSA from 2019 doesn't reflect process changes, new equipment, or lessons learned from incidents. Review and update JSAs at least annually, after any incident or near-miss, and whenever the job process changes. Date every revision.

Common questions