Kaizen — Continuous Improvement Events

Kaizen (Japanese for "change for good") is the practice of making small, continuous improvements involving all employees. In manufacturing, it is often implemented as structured kaizen events (also called kaizen blitzes or rapid improvement events) — focused 3–5 day workshops targeting a specific process problem.

Why companies use it

·Generates rapid, visible improvement in a short timeframe, demonstrating lean progress to leadership
·Engages operators directly in improving their own work, building ownership and morale
·Low cost — kaizen events rely on creative problem-solving, not capital investment
·Builds continuous improvement capability at all levels, not just the engineering team

What hiring managers look for

·Facilitating a kaizen event is a core competency for manufacturing and CI engineers
·They want to know if candidates can manage a cross-functional team under time pressure to produce real results
·Understanding the link between daily kaizen (small improvements every day) and formal kaizen events shows depth of knowledge
·Post-event follow-through — implementation plans, measurement, sustainment — is where most candidates fall short

Typical interview questions

Describe the structure of a kaizen event from preparation to close-out.

How do you select a good target area for a kaizen event?

What do you do when operators resist the changes proposed in a kaizen event?

How do you measure the success of a kaizen event after it ends?

What is the difference between a kaizen event and a DMAIC project? When would you use each?

Common mistakes

·Not involving the operators who actually do the work — solutions created without their input rarely sustain
·Choosing a target area that is too large to improve meaningfully in 3–5 days
·Declaring success at the end of the event without implementing a 30/60/90-day follow-up audit
·Solving the symptoms visible during the event without investigating whether they represent a recurring pattern
·Not communicating results to the broader organisation — publicising kaizen wins builds a CI culture

Real engineering example

A five-day kaizen event targeting the changeover process of a semiconductor substrate inspection machine reduced changeover time from 4.2 hours to 47 minutes. The team (operators, maintenance, process engineer) identified that 68% of changeover time was searching for the correct setup fixtures, which were stored in unlabelled bins. Shadow boards, colour-coded fixtures, and a standardised changeover sequence sheet were created during the event. OEE on that machine improved from 62% to 78% in the following quarter.

Topics covered

kaizencontinuous improvementleankaizen eventrapid improvementworkshop

Related interview guides

Manufacturing Engineer →Continuous Improvement Engineer →