Write a risk assessment for Job hazard analysis

A sound risk assessment and JHA/JSA process should identify the job or task, break it into steps, identify hazards at each step, evaluate the severity and likelihood of harm, assign a risk priority, implement controls using the hierarchy of controls, and document the required controls, PPE, training, and approvals. JHAs are especially useful for complex jobs, jobs with difficult-to-control hazards, jobs with accident or near-miss history, new or modified tasks, infrequent work, and permit-required work. [1] [2] [14]

1. Select and prioritize the job or task. Give priority to tasks with severe injury potential, frequent incidents, new or modified work, non-routine work, or permit-required activities.
2. Involve the people who do the work. Review the task with employees and supervisors so the analysis reflects actual conditions and practical controls.
3. Observe the work and break the job into logical steps. Record enough detail to identify hazards without making the analysis unusably complex.
4. For each step, identify hazard type, hazard source, who or what is exposed, body parts at risk, environmental conditions, triggering events, and possible consequences.
5. Evaluate risk by rating severity and probability, then assign a risk code or priority level using a matrix.
6. Choose controls in order of effectiveness: elimination, substitution, engineering controls, administrative/work-practice controls, then PPE.
7. Document the selected controls, required PPE, training, approvals, and any conditions that require stopping work or re-briefing the crew.
8. Review the JHA with the crew before work starts, update it when conditions change, and periodically reassess the hazards and effectiveness of controls.

[1] [9] [13] Hazard identification should be systematic. Start with a baseline survey or walkthrough of the workplace, processes, tasks, and equipment. For each task step, identify the hazard type and source, the body parts at risk, what could go wrong, what triggers the hazard, and any contributing conditions such as lighting, noise, weather, traffic, slippery surfaces, ergonomics, or chemical exposure. Review SDSs for chemicals, equipment manuals for manufacturer warnings, incident and near-miss history, and routine inspections to capture both obvious and less visible hazards. [8] [1] [5]

• Common hazard categories to capture include impact, penetration, crush/pinch, harmful dust, chemical exposure, heat, optical radiation, electrical contact, ergonomic hazards, and environmental hazards.
• Also record hazard source and body parts at risk for each step, because PPE and other controls must match the actual exposure.
• When assessing PPE needs, assume no PPE is being worn so the underlying hazard is fully evaluated.

[11] [11] Risk evaluation should combine severity and probability to assign a risk priority. A practical matrix approach rates severity from fatal/permanent disability through minor injury to no injury, and probability from frequent to extremely improbable. The resulting code determines urgency: high risk requires immediate suspension of the task until controls are implemented; medium risk requires prompt corrective action; low risk may require no further action unless a specific standard still mandates protection. [3] [3] [3]

Control measures should follow the hierarchy of controls and should not default to PPE first. Begin by asking whether the task can be eliminated, redesigned, substituted, isolated, or otherwise changed so exposure is removed or reduced. If the hazard cannot be eliminated, use engineering controls such as guards, enclosures, ventilation, or equipment changes; then administrative or work-practice controls such as procedures, sequencing, permits, scheduling, signage, exposure limits, and training. PPE is the last line of defense and is often used together with higher-level controls, not instead of them. [5] [2] [6]

• Elimination: remove the hazard entirely, such as performing work from the ground instead of at height.
• Substitution: replace the hazard with a less hazardous method, material, or tool, such as using a scissor lift instead of a ladder or water-based paint instead of solvent-based paint.
• Engineering controls: isolate people from the hazard with guards, enclosures, ventilation, interlocks, barriers, or redesigned equipment.
• Administrative/work-practice controls: change how the work is planned or performed through procedures, permits, sequencing, scheduling, inspections, exposure limits, signage, and supervision.
• PPE: specify hazard-matched eye/face, head, hand, foot, hearing, respiratory, fall, flotation, leg, or body protection only after higher-level controls are considered.

[5] [7] [8] Documentation should be detailed enough to show what was assessed, how risk was evaluated, what controls were selected, and who approved the assessment. A strong JHA/JSA form typically includes the job or task, location, task steps, hazard type, hazard source, body parts at risk, severity, probability, risk code, and control method. It should also include certification fields such as workplace name and address, assessor, date of assessment, and approval for implementation of controls. If PPE is required, the assessment should document the specific PPE selected and incorporate new PPE requirements into the written safety or accident prevention program. [6] [12] [3]

• Document the task and location.
• List each job step in sequence.
• For each step, record hazard type, source, exposed body parts, severity, probability, and risk code.
• Record the selected control method and whether work must stop pending correction.
• Specify required PPE by hazard.
• Record required training, qualifications, permits, and briefings.
• Capture assessor name, date, workplace information, and management approval.
• Keep the document available to safety and health personnel and update it when conditions, equipment, or procedures change.

[12] [13] [1] PPE selection must be hazard-specific and based on the assessment, not chosen generically. First reduce exposure through engineering, work-practice, and administrative controls. Then select PPE that is properly matched to the hazard, provides effective protection, is durable, and fits the worker correctly. A complete PPE program should also address condition, maintenance, use, and employee compliance. [3] [7] [4]

Training and communication are essential parts of the JHA/JSA process. Before work begins, conduct a site-specific job briefing with the crew to review the JHA, summarize the day's hazards and controls, discuss any hazards not already captured, and explain stop-work triggers. Provide training on the task, equipment, procedures, permits, emergency actions, and PPE use. Retrain or re-brief when conditions change, when new equipment or procedures are introduced, after incidents, or when employees are new to the task. [1] [10] [4]

For regulatory compliance, at minimum ensure the employer assesses the workplace for hazards that require PPE, documents that hazard assessment, selects and provides appropriate PPE, trains employees, and maintains PPE in safe condition. The cited materials specifically reference OSHA 1910.132(d)(1) for workplace assessment and WAC 296-800-16005 and WAC 296-800-16010 for PPE hazard assessment and documentation. In practice, compliance also means keeping the JHA/JSA current, using it during pre-job planning, and verifying that controls remain effective and do not create new hazards. [2] [1] [7]

A practical best-practice workflow is: perform a walkthrough and baseline survey; observe the job; break it into steps; identify hazards, sources, and exposed body parts; rate severity and probability; assign a risk code; stop high-risk work until corrected; implement controls in hierarchy order; specify PPE only after higher-level controls are considered; document training, permits, and approvals; brief the crew before starting; and review the JHA whenever conditions change or during periodic reassessment. This approach makes the JHA/JSA both a planning tool and a living field document. [9] [3] [1]