Kaizen/Gemba

Kaizen means change toward the better; gemba is the actual place where value-producing work happens. Together they form a management approach in which people closest to the work improve it continuously through observation, disciplined experiments and standardisation.

When to use it

Use kaizen for recurring quality, flow, safety, inventory, cost and lead-time problems that can be improved through repeated learning. Begin at gemba with the people who perform and experience the process.

Look for waste in defects, overproduction, unnecessary transport, waiting, excess inventory, unnecessary motion and processing beyond customer need. Waste is contextual: an activity that appears non-value-adding may still be required for safety, law or resilience.

After removing obvious waste, the 5-Ss support workplace organisation:

1. Seiri — separate what is necessary from what is not.
2. Seiton — arrange materials, tools and information for safe, efficient use.
3. Seiso — clean while inspecting for abnormal conditions.
4. Seiketsu — standardise the first activities and make conditions visible.
5. Shitsuke — sustain the practice through shared discipline and leadership support.

The final element is standardised work: the best currently known safe method, which becomes the baseline for the next improvement. Standardisation should preserve learning, not prevent challenge. Sustaining the 4 earlier practices, the 5-Ss and the wider 5-S method requires time, ownership and management follow-through.

A correct implementation of the kaizen concept will lead to:

• Improved productivity
• Better quality and safety
• Faster, more dependable delivery
• Lower avoidable cost
• Greater customer value
• Stronger employee problem-solving capability and morale.