If you work in mining, construction or any high-hazard industry in Western Australia, you have almost certainly heard the term ICAM. It stands for the Incident Cause Analysis Method — a structured investigation model built on the principles of human and organisational error. ICAM is one of the most widely used investigation methods across the Australian resources sector, and for good reason: it moves the conversation away from blame and towards the system failures that let an incident occur.
Why ICAM exists
Most serious incidents are not caused by a single careless act. They are the result of several smaller failures lining up — a missing control here, an unclear procedure there, a fatigue or supervision gap that no one flagged. ICAM is built around this idea, often described as the “Swiss cheese” model: each defence in your organisation has holes, and an incident happens when the holes momentarily align. The job of an ICAM investigation is to find every one of those holes, not just the last one.
This is why ICAM is deliberately systemic and non-punitive. The goal is learning, not discipline. When people fear punishment, the truth gets buried and the same conditions stay in place for the next person.
The ICAM analysis framework
The heart of ICAM is its analysis model, which sorts contributing factors into four levels. A good investigation tests the evidence against every level — not just the ones closest to the worker.
1. Absent or failed defences
These are the controls that should have prevented the incident or limited its consequences but either were not there or did not work. Think guarding, isolation, permits, alarms, PPE, emergency response or competency checks. Identifying the absent or failed defences shows you where the protection broke down.
2. Individual or team actions
These are the errors or violations by people directly involved — a missed step, a shortcut, a decision made with the information available at the time. ICAM records these honestly, but treats them as a starting point for deeper questions rather than the final answer.
3. Task or environmental conditions
These are the conditions present when the action happened that made the error more likely — time pressure, poor lighting, confusing procedures, defective tools, weather, noise or fatigue. They explain why a reasonable person behaved the way they did.
4. Organisational factors
These are the underlying, system-level issues that created the conditions in the first place — gaps in training, resourcing, scheduling, contractor management, procurement, change management or safety culture. Organisational factors are where the most valuable, longest-lasting corrective actions usually live.
How an ICAM investigation runs
A competent investigation follows a disciplined process so the findings hold up to scrutiny:
- Secure the scene and gather perishable evidence early — the four “P’s” of people, parts, position and paper.
- Conduct fair, supportive interviews focused on facts rather than fault.
- Build a clear timeline of events and conditions leading up to and following the incident.
- Map the evidence against the four ICAM levels to identify contributing factors.
- Develop corrective actions that target the systemic causes, then assign owners and due dates.
What the investigation produces
The two key outputs are a clear set of contributing factors across all four levels, and a list of practical corrective actions aimed at the organisational and condition-level causes — the ones that stop recurrence. Actions that only address individual behaviour, such as “re-train the worker”, are usually a sign the analysis has not gone deep enough.
Where ICAM fits
ICAM is well suited to significant incidents, high-potential near misses and events where a regulator or client expects a thorough, defensible investigation. It pairs well with other tools and can be scaled to the severity of the event. For a broader look at how we run investigations, see our investigations service.
How Robust HSEQ can help
Our team are experienced lead investigators who run ICAM and other methods across mining, construction, transport and utilities in Perth and WA — whether you need an independent investigation led end to end, a peer review of your findings, or your people trained to run ICAM in-house. We deliver a clear, evidence-based report and corrective actions you can actually close out. Learn more about our investigations service or get in touch to talk through your situation in confidence.