Quick definition

Nuance & origin

• Kai (改) = change + Zen (善) = good/better.
• Popularized in post-WWII Japan and the Toyota Production System.
• Involves employees at all levels in identifying and implementing improvements.

Common misconceptions

• Not only for manufacturing; Kaizen applies to services, leadership, and personal growth.
• Not about big innovations; Kaizen is about small, ongoing changes.

Why it matters for leaders

• Builds a culture of continuous learning and accountability.
• Encourages safe experimentation and reduces fear of failure.
• Improves efficiency, quality, and team engagement.
• Creates resilience by normalizing change as part of work.

How to apply (for leaders)

1. Encourage ideas from all team members.
2. Focus on small, actionable improvements.
3. Celebrate contributions to strengthen engagement.
4. Standardize successful improvements into routines.
5. Demonstrate Kaizen mindset as a leader.

Leader’s prompts

• What is one small improvement we can make this week?
• How can we simplify or improve this process for the next person?

Related terms

• 5S: workplace organization system linked to Kaizen.
• Lean Management: Western equivalent influenced by Kaizen.
• Continuous Improvement: closest English analogue.