In every workplace, mistakes happen. A shipment is sent to the wrong location, a temperature check is missed, a document is entered incorrectly, or a safety step is skipped.

The immediate reaction is often to identify who made the error, but employee error is usually a symptom, not the root cause.

Root cause analysis (RCA) helps businesses move beyond blame and uncover the underlying issues that contribute to mistakes. When applied effectively, it reduces disruptions and safety incidents, improves quality and compliance, and lowers long-term costs. Instead of temporary fixes, RCA turns errors into opportunities for lasting improvement, resilience and operational excellence.

In this article, Cheryl Sullivan, IFS Senior Manager Marketing and Communication, and Daniela Poblete, IFS Standard Manager, explain how RCA works in practice and why it pays to look beyond individual mistakes.

Understanding Employee Error

Employee error is an unintended action or decision that leads to an undesirable outcome. These errors are rarely caused by carelessness alone. One of the most important lessons in root cause analysis is distinguishing between human error and system failure:  employees often operate exactly as the system allows. If multiple people make the same mistake over time, the issue is almost certainly embedded in the process itself. 

Common contributing factors include:

• Procedures that are unclear, misunderstood or difficult for users to implement
• Inadequate training and onboarding
• Inconsistent or absent communication between processes and departments
• Excessive workload, fatigue or insufficient staffing
• Time pressure
• Ineffective supervision
• Complex or poorly designed processes and workplace layouts
• Lack of proper tools or resources

When organisations treat errors solely as personal failures, they miss the opportunity to improve the systems that surround employees. Strong systems reduce the likelihood of human error and detect problems before they escalate, supported by systematic analysis of failure trends and whether implemented actions actually work.

Why Blame Is Counterproductive

A blame-focused culture breeds fear. Employees may hide mistakes, avoid reporting near misses, or be reluctant to raise concerns about risks. This limits learning and weakens continuous improvement.

By contrast, organisations that investigate incidents objectively gain valuable insight into operational weaknesses. Employees are more willing to report concerns when they know the goal is improvement rather than punishment.

This does not eliminate accountability. Intentional misconduct or repeated negligence still requires corrective action. However, most operational errors stem from broader process failures that management must address.

What Is Root Cause Analysis?

Root cause analysis is a structured method for identifying the underlying reasons a problem occurred. Rather than stopping at the immediate error, RCA asks deeper questions to determine what conditions allowed the issue to occur.

For example:

Problem: Incorrect product labels were applied.

A superficial conclusion might be:

• “The employee selected the wrong label.”

A deeper root cause analysis may reveal different possible causes, for example:

• Labels for different products looked nearly identical
• Staff were rushed to meet shipping deadlines
• The verification process was skipped due to staffing shortages
• Training on updated procedures was incomplete

In this case, the employee’s action was only one part of a larger systemic problem.

Common Root Cause Analysis Methods

Below, we list four methods and approaches to help you with root cause analysis – from simple, repeatable questioning techniques to structured, data-driven frameworks.

The 5 Whys

This simple technique involves repeatedly asking “Why?” until the underlying cause is identified. Sometimes three questions are enough, sometimes more are needed.

Example:

Why was the shipment delayed?
Because the product was packaged incorrectly.

Why was it packaged incorrectly?
Because the employee followed an outdated instruction sheet.

Why was the outdated instruction sheet still in use?
Because document control procedures were not updated.

The process (asking why) continues until the organisation identifies the system weakness that needs correction.

Fault Tree Analysis (FTA)

FTA is a deductive, top-down method that starts with an unwanted event – a system failure, safety incident, or quality defect – and works backwards to map out every possible chain of causes that could lead to it. The result is a visual "tree" of logical branches, showing how individual failures combine to trigger the top-level problem.

Fishbone Diagram (Ishikawa Diagram)

This method categorises potential causes into areas such as:

• People
• Process
• Equipment
• Materials
• Environment
• Management

It helps teams visually organise contributing factors and identify patterns.

Failure Mode and Effects Analysis (FMEA)

FMEA is a proactive tool for anticipating where failures could occur before incidents happen. It is particularly valuable in manufacturing, logistics, food safety, and quality management systems.

Building a Culture of Continuous Improvement

Organisations that effectively manage employee error focus on learning rather than on punishment. They foster environments where employees feel safe reporting issues and contributing to solutions. An effective improvement culture includes:

Open Communication
Employees should feel comfortable raising concerns, reporting near misses, and asking questions without fear of retaliation.

Effective Training
Training should be practical, consistent, and regularly updated to reflect operational changes.

Clear Procedures
Processes should be easy to understand, accessible, and realistic for employees to follow in daily operations.

Leadership Engagement
Managers play a critical role in reinforcing quality and safety expectations and in encouraging problem-solving and collaboration.

Corrective and Preventive Actions

Once organisations identify root causes, they should implement measures to prevent recurrence rather than simply correcting the immediate issue. This principle is also anchored in IFS Standards such as Food, HPC, PacSecure, Logistics and Broker, which require companies to identify the root causes of non-conformities and to verify that corrective actions are effective.

Conclusion

Employee errors are inevitable in any operation, but recurring problems are not. Organisations that focus solely on individual mistakes often overlook the deeper process weaknesses that drive those outcomes.

Root cause analysis shifts the conversation from “Who made the mistake?” to “Why did the system allow this to happen?”

That shift is powerful. It encourages transparency, strengthens operational systems, and fosters workplaces where continuous improvement becomes part of the culture.

The most effective organisations understand that people are not the problem to be fixed. They are essential partners in identifying and improving the systems around them.