Monitoring and Sustaining Improvements


The Control Phase focuses on ensuring monitoring and sustaining improvements achieved during the project are sustained over time. This phase involves monitoring processes, implementing control measures, and establishing mechanisms to prevent regression. Let’s delve into the details of monitoring and sustaining improvements in the Six Sigma Control Phase, with some practical examples.

Monitoring and Sustaining Improvements

1. Standardization

One of the key aspects of sustaining improvements is standardizing the processes. Basically, this involves creating detailed documentation of the improved procedures. This further includes step-by-step instructions, checklists, and visual aids. Consequently, standardization helps to ensure consistency and reduce the chances of errors or variations in the process.

For example, let’s consider a manufacturing company that has implemented a Six Sigma project to reduce defects in their production line. In the Control Phase, they would document the revised operating procedures, clearly defining the correct parameters, settings, and quality checks. This documentation serves as a guide for all employees involved in the process, making it easier to maintain improved performance.

2. Visual Management

Visual management involves using visual aids to communicate important information about the process and its performance. Tools such as charts, graphs, dashboards, and control charts can provide real-time data on key performance indicators (KPIs). Eventually, these tools make it easier to monitor and identify any deviations from the desired targets.

For instance, the manufacturing company could create a visual control chart that tracks the number of defects per unit produced. By regularly updating and reviewing this chart, the team can quickly identify any increase in defects and take corrective actions promptly.

3. Process Audits

Regular process audits are essential to assess adherence to the improved procedures and identify any gaps or non-compliance. Further, audits can be conducted by internal teams or external experts to provide an unbiased evaluation of the processes and their effectiveness.

Let’s say a software development company has implemented a Six Sigma project to reduce software bugs. During the Control Phase, they would conduct periodic audits to review the coding practices, testing protocols, and documentation standards. Eventually, the audit results would help identify any deviations or areas for improvement and allow for corrective actions to be taken.

4. Continuous Improvement

The concept of continuous improvement is integral to the sustainability of Six Sigma projects. Promoting a culture of continuous improvement encourages employees to seek ways to enhance processes and exceed desired performance levels.

In the software development company example, the employees would be encouraged to provide feedback, suggest improvements, and participate in problem-solving sessions. Additionally, this collaborative approach helps in identifying new opportunities for enhancing the software development process.

5. Feedback and Customer Satisfaction

Monitoring customer satisfaction and collecting feedback is vital to sustaining improvements. Hence, engaging with customers through surveys, interviews, or feedback forms can provide valuable insights into whether the implemented changes are meeting their expectations and requirements.

To illustrate this point, let’s consider a restaurant that has implemented Six Sigma to improve its food quality and service. Through customer surveys, they can gather feedback on various aspects such as food taste, presentation, service speed, and overall experience. This feedback can guide them in making necessary adjustments to sustain the improved standards and ensure customer satisfaction.

6. Training and Education

Ensuring that employees have the necessary knowledge and skills to sustain the improvements is crucial. Therefore, conducting training sessions or workshops can help reinforce the changes made and educate employees on their roles and responsibilities in maintaining the improved processes.

Continuing with the manufacturing example, the company would provide training sessions to the production team on the revised procedures. Also, this training could include hands-on exercises, simulations, or interactive sessions to enhance understanding and engagement.


By implementing these techniques and tools, organizations can effectively monitor and sustain improvements made during the Control Phase of a Six Sigma project. Remember, standardization, training, visual management, process audits, continuous improvement, and customer feedback are all essential elements in the journey toward long-term success.

Scroll to Top