Topic module

Immediate, Underlying and Root Causes

Looking beyond the final unsafe act to task, workplace and organisational conditions that allowed the event.

Long-form learning

Concept to Risk to Memory to Check-up

Move from management ownership to a specific workplace risk assessment, proportionate control, investigation and evidence-led improvement.

Core concepts

Concept 1

Immediate causes describe the unsafe condition or action closest to the event.

Exam cue: Ask why the action made sense or remained possible in the system.

Concept 2

Underlying causes include task design, supervision, maintenance, competence and local arrangements.

Exam cue: Trace each failed barrier back to how it was selected, provided and checked.

Concept 3

Root causes concern management decisions, systems, culture and resources that created recurring weakness.

Risk pitfalls and guardrails

Stopping the investigation at operator error.

Guardrail: Do not replace a design, engineering or organisational control with paperwork, a warning or PPE alone.

Calling a vague cultural label a root cause without evidence.

Guardrail: Do not replace a design, engineering or organisational control with paperwork, a warning or PPE alone.

Memory anchors

Immediate Is Closest

Identify the condition or action directly connected to the event.

Underlying Is Local

Examine task, workplace and supervisory conditions.

Root Is Organisational

Trace decisions, systems and resources that allowed recurrence.

Barrier by Barrier

Ask which preventive or protective control failed and why.

Human Error Is a Start

Investigate the conditions that shaped performance.

Checkpoint rule

Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.

Knowledge Check (after reading)

Short check-up to confirm understanding of this module.

1-2 question checkpoint

Next step personalized recommendations

Move forward only after this module is stable.

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