Occupational Health & Safety Risk Assessment

Score a workplace hazard using the standard 5×5 Likelihood × Severity risk matrix, see where it falls, and get a matching control recommendation.

Assess a Hazard

Phase / Process Area

Hazard / Activity List updates automatically based on the selected phase.

Likelihood How probable is it that this hazard causes harm?

Severity How serious would the resulting harm be?

Risk Score

– / 25

Select a phase, hazard, likelihood, and severity to see the risk score.

Saved!

	1 Negligible	2 Minor	3 Moderate	4 Major	5 Catastrophic

Low (1–3) Medium (4–9) High (10–15) Extreme (16–25)

EliminationPhysically remove the hazard entirely.

SubstitutionReplace the hazard with a safer alternative.

Engineering ControlsIsolate people from the hazard (e.g. biosafety cabinets, ventilation).

Administrative ControlsChange how people work (SOPs, training, signage, scheduling).

PPEProtect the worker with gloves, masks, gowns, and eyewear — last line of defense.

No assessments saved yet — complete one above and tap “Save This Assessment.”

Select the Phase / Process Area first — the Hazard / Activity list updates automatically to show the specific risks relevant to that phase.
Rate Likelihood (how probable the hazard causes harm) and Severity (how serious the resulting harm would be), each on a 1–5 scale.
Risk Score = Likelihood × Severity. The matrix highlights exactly where your assessment falls.
Use the Hierarchy of Controls to select the most effective control(s) practicable for the risk level identified.
Don't see your hazard listed? Select a phase, then type it into the "Not listed?" field and tap + Add — it's added to that phase's list and selected automatically.
Once a full assessment is scored, tap "Save This Assessment" to keep it in the Saved Assessments list below, stored locally in your browser. Export the whole list as a CSV at any time.

This is a standard qualitative 5×5 risk matrix (consistent with ISO 45001 / HIRARC practice) — your organization's documented risk assessment procedure and rating definitions take precedence if they differ.
Risk assessments should be reviewed periodically and whenever a process, equipment, or hazard changes.
Document completed assessments (hazard, score, controls, reviewer, date) per your quality management system (e.g. ISO 15189 / ISO 45001).