Workplace Risk Assessment Information, Guidance & Project
Learn how to identify hazards, assess who may be harmed, select proportionate controls, create a task-specific workplace risk assessment, manage improvement actions, calculate initial and residual risk, save portable JSON and produce a professional SPI report.
What is a workplace risk assessment?
A systematic examination of work activities to identify hazards, decide who may be harmed and how, evaluate the likelihood and severity of harm, and implement controls. It must reflect the real task, people, workplace and conditions rather than being a generic paperwork exercise.
Hazard and risk
Hazard
Something with the potential to cause injury, ill health or other harm: machinery, chemicals, electricity, vehicles, work at height, stress or poor ergonomics.
Risk
The combination of how likely harm is and how severe the outcome could be, taking account of the controls actually in place.
Five-step method
Common physical hazards
- Slips, trips and falls
- Machinery and stored energy
- Vehicles and workplace transport
- Noise, vibration and temperature
- Work at height and falling objects
Health hazards
- Hazardous substances, dusts and fumes
- Manual handling and repetitive work
- Display screen and ergonomic factors
- Biological agents
- Stress, fatigue and lone working
People to consider
- Employees and agency workers
- Contractors, visitors and public
- Young or inexperienced persons
- Pregnant workers and new mothers
- People with disabilities or health needs
Hierarchy of control
Work from the most effective control downward. PPE should not be the default where higher-order controls are reasonably practicable.
Suitable and sufficient
- Proportionate to the nature and scale of the risk.
- Based on observation, workforce knowledge and credible evidence.
- Task-specific and clear about normal, abnormal and emergency conditions.
- Includes existing controls and tests whether they are effective.
- Produces actions with owners and due dates.
- Considers human factors, competence, workload and foreseeable error.
- Links to specialist assessments where general assessment is insufficient.
Specialist assessments
COSHH, DSEAR, fire, machinery, manual handling, work at height, noise, vibration, DSE, lifting operations, pressure systems, confined spaces, asbestos, radiation, stress and lone working.
Review triggers
Change to process, equipment, layout, material or staffing; accident or near miss; control failure; new legal or technical information; employee concern; or evidence that the assessment is no longer valid.
Verification
Do not close an action simply because a document was issued. Verify the control at the workplace through observation, inspection, testing, maintenance data, exposure monitoring or worker feedback.
Best-practice questions
| Topic | Questions to ask |
|---|---|
| Task | What happens before, during and after the job? What about setup, cleaning, maintenance, breakdown and disposal? |
| People | Who performs the task, who is nearby, and who may be unusually vulnerable? |
| Controls | Are controls present, suitable, used correctly, maintained and independently checked? |
| Human factors | Could time pressure, poor interfaces, fatigue, unclear instructions or supervision contribute? |
| Emergency | What credible failures could occur and are isolation, rescue, spill, fire and first-aid arrangements adequate? |
5 × 5 risk matrix
Risk score = likelihood × severity. Use the matrix as a prioritisation aid, not a substitute for professional judgement or legal compliance.
Scoring guidance
| Score | Likelihood | Severity |
|---|---|---|
| 1 | Rare | Minor discomfort / no lost time |
| 2 | Unlikely | Minor injury / short-term effect |
| 3 | Possible | Injury or ill health requiring treatment |
| 4 | Likely | Major injury or long-term ill health |
| 5 | Almost certain | Single or multiple fatality / life-changing harm |
Assessment details
Project recordHazard register
| Hazard / event | Potential harm | Who may be harmed | Existing controls | L | S | Initial | Further controls | Hierarchy | Residual L | Residual S | Residual | Owner / due |
|---|
Improvement actions
| Action | Owner | Due date | Priority | Status | Verification / evidence |
|---|