Quick answer
A hazard is something with the potential to cause harm. Risk concerns the chance of that harm happening and how serious it could be in the circumstances. Identifying a hazard tells you what to examine; assessing risk helps you decide what precautions are needed.
The distinction helps you choose a useful precaution
If a form says only “knife” or “cleaning product”, it names a possible source of harm but does not explain the task or exposure. A useful assessment connects that source to people, circumstances and controls.
HSE’s overview distinguishes hazards from the likelihood and seriousness of harm. HSENI’s explanation makes the same basic distinction for Northern Ireland, while using its own legal framework.
Compare the source of harm with the circumstances
| Hazard | How harm could occur | Circumstances affecting the risk |
|---|---|---|
| Sharp blade | A worker cuts a hand while preparing or cleaning. | The task, equipment condition, method, training and handling arrangements. |
| Hot tray | Someone is burned during removal or transfer. | The route, space, load, handling method and suitable protection. |
| Wet floor | A person slips while passing through. | The water source, traffic, floor condition and effectiveness of controls. |
| A hazardous cleaning substance | A worker is exposed during use or handling. | The substance, task, amount, exposure route and preventive measures. |
These are illustrative questions, not a complete assessment or a rule that every task needs the same precautions.
Worked example: the same hot tray in two situations
Hypothetical example. A tray stays hot whether it is being moved along a clear, agreed route or carried through a crowded passage. The hazard has not disappeared. The chance of someone being struck or burned changes with the route, the people nearby and how the task is organised.
A useful response examines whether the journey can be reduced, access improved and handling arranged safely. Telling everyone to watch out may leave the main source of exposure unchanged.
Use both terms in a clear assessment entry
A simple entry can follow this sequence:
- Name the source of harm.
- Describe the task and people exposed.
- Explain the possible harm and its likelihood and seriousness.
- Identify precautions and whether further action is needed.
HSE’s full assessment steps explain how this leads to controls, recorded findings and review. Naming a hazard is not the completed assessment.
Avoid wording that hides the real problem
- Using “risk” as a list of objects. Explain how an object or condition could harm someone.
- Calling a familiar task low risk automatically. Consider exposure, controls and possible consequences.
- Assuming rare means unimportant. Serious potential harm still needs consideration.
- Calling a hazard removed when only a warning was added. State what the control actually changes.
Next steps
Take one entry from a workplace assessment. Check whether it identifies the hazard, people, possible harm and precautions clearly enough for someone else to understand. Add missing context before deciding whether more control is needed.
Read HSE’s risk-assessment overview — Connects the terminology to the wider process for managing workplace risks.
Relevant next resource
Level 2 Health & Safety in the Workplace
The verified Level 2 workplace course introduces hazard recognition and risk assessment for employees applying these terms at work.
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