When workplace incidents happen, New Zealand businesses must act quickly and effectively. For small to medium enterprises (SMEs), this can feel overwhelming. A well - run incident investigation not only identifies what went wrong but also prevents future harm and ensures compliance with WorkSafe NZ obligations.

Why Investigations Matter

Every year, more than 30,000 workplace injury claims are lodged with ACC. While many are minor, even small events can reveal risks that, if ignored, may cause serious harm.

For SMEs, the impact of workplace incidents can be significant. Investigations help businesses:

• Improve safety and protect staff wellbeing
• Stay compliant with the Health and Safety at Work Act 2015 (HSWA)
• Reduce downtime, costs, and reputational damage

An investigation should focus on systems and causes, not blame.

Step 1: Immediate Response

• Secure the scene to prevent further harm.
• Provide medical attention if needed.
• Notify WorkSafe NZ if it’s a notifiable event (serious injury, illness, death, or dangerous occurrence).

Step 2: Gather Evidence

Collect information while it’s fresh:

• Photos, site plans, and equipment records
• Witness statements
• Safety checklists and training logs

Clear evidence builds the foundation for finding the root cause.

Step 3: Identify the Root Cause

Look beyond the surface and avoid blame. Underlying issues may include:

• Inadequate training
• Faulty or poorly maintained equipment
• Weak or outdated procedures
• Lack of supervision

Step 4: Implement Corrective Actions

The real value of an investigation is preventing repeat harm. Actions may include:

• Updating SOPs
• Providing refresher training
• Reviewing hazard registers
• Communicating findings to staff

Corrective measures should be monitored to ensure effectiveness.

Leadership and Legal Duty

Under the HSWA, the Person Conducting a Business or Undertaking (PCBU) and its officers are legally responsible for health and safety. Strong leadership means:

• Encouraging staff to report incidents
• Providing time and resources for investigations
• Creating a no-blame culture so staff feel safe speaking up

How ACT Safety Can Help

ACT Safety offers Lead Incident Investigation training using the globally recognised ICAM methodology. Our courses help SMEs:

• Build in - house investigation capability
• Comply with WorkSafe NZ obligations
• Prevent repeat incidents and reduce downtime

Delivered nationwide, our training gives staff the tools and confidence to manage investigations effectively.

A structured investigation process: immediate response, evidence gathering, root cause analysis, and corrective actions, helps NZ SMEs stay safe, compliant, and productive.

With ACT Safety’s ICAM-based training, your business will be better prepared to respond, reduce risks, and protect your most valuable asset: your people.