A job hazard analysis (JHA) is a method for identifying and evaluating hazards associated with tasks (steps) with a specific job or activity and eliminating or mitigating them prior to conducting work.
A JHA can prevent work-related injuries or illnesses by eliminating or controlling identified hazards. It is a means to ensure that workers have the training, equipment, and supplies to do their jobs safely.
How do I conduct a JHA?
It is best to involve workers who do or will do the jobs being analyzed. Observe a worker perform the job or activity at the location where it is normally done.
A JHA involves doing the following:
- Select the job/activity to be analyzed.
- Break the job/activity down into a series of tasks. Do not be too general and not be too detailed.
- Identify potential hazards and consequences in each task.
- Determine preventive measures to overcome these hazards.
Use the Job Hazard Analysis template form and the Job Hazard Analysis (JHA) Instructions.
How do I identify jobs for analysis?
Ideally, all jobs/activities should have a JHA. However, jobs/activities with the following conditions should be considered a high priority for analysis.
- Jobs/activities with a history of injuries or near misses
- High risk jobs/activities with potential for fire, explosion, chemical release, catastrophic equipment failure
- Simple human error that could lead to serious injury
- New worker doing the job/activity
- Jobs/activities that have changed
- Infrequently performed jobs/activities
- Any job/activity under a safety "work permit” – confined space permit, hot work permit, etc.
How do I identify potential hazards?
Identify potential hazards in each job task. For each hazard, ask the questions:
- What can go wrong?
- What are the consequences?
- How could it happen?
- What are other contributing factors?
- How likely is it that the hazard will occur?
| Hazard | Consequence |
|---|---|
| Hazard Working at heights or same level | Consequence Slip, trip, or fall |
| Hazard Tools/equipment/ machinery hazards | Consequence Injury |
| Hazard Exposed machinery moving parts, pinch points | Consequence Injury |
| Hazard Rotating equipment | Consequence Injury from entanglement of hair, clothing |
| Hazard Sharp edges | Consequence Cuts, scrapes |
| Hazard Fire or explosion | Consequence Burns, injury |
| Hazard Noise | Consequence Hearing loss |
| Hazard Vibration | Consequence Injury |
| Hazard Electricity | Consequence Shock, electrocution |
| Hazard Exposure to airborne dusts, fumes, mists, vapors | Consequence Adverse health effects |
| Hazard Low oxygen, confined space | Consequence Asphyxiation |
| Hazard Contact with hot, toxic, caustic chemical/product | Consequence Burns, irritation, other health effects |
| Hazard
Exposure to biological agent, bloodborne pathogen |
Consequence Adverse health effects, infection |
| Hazard Repetitive tasks, working in awkward position | Consequence Ergonomic issues |
| Hazard Lifting, pushing, or pulling | Consequence Strain |
| Hazard Poor lighting | Consequence Vision problems |
| Hazard Falling object | Consequence Injury |
| Hazard Radiation exposure | Consequence Health effects |
How do I control the hazards?
Identify ways to eliminate or minimize the hazards in each task. The best method is to eliminate the hazard at the source. If not possible, control the hazard with engineering controls, safe work practices and personal protective equipment (PPE), or limit worker exposure using administrative controls.
| Elimination/Substitution | |
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| Engineering Controls | |
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| Safe Work Practices | |
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| Administrative Controls | |
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What type of PPE is needed for a hazard that cannot be eliminated or minimized?
Examples of PPE that may be required if a hazard cannot be eliminated:
- Safety glasses/goggles/face shield
- Gloves (specify type)
- Skin protection (lab coat/Tyvek suit)
- Respiratory protection
- Fall protection
- Hearing protection
- Hard hat
- Impact shielding
- Radiation shielding
Refer to the Personal Protective Equipment page for more information.
What do I do when the JHA is completed?
- Ensure equipment and supplies are acquired to perform the job/activity according to the JHA.
- Train workers in the procedures, controls, and PPE according to the JHA.
- Review the JHA periodically and update it when the job/activity or equipment changes. Revise JHA as needed and retrain employees on the revised JHA.
- Consult EH&S to review JHAs as needed.
- Please send EH&S your completed JHA so we can add it to the UW JHA Library (coming soon) to help others do similar jobs safely.