By: Sergio Niyama
The Soul of the System: The Biggest Obstacles to Lean Engagement
Why Is Engagement the Biggest Challenge in Lean?
Many times throughout my career at Toyota, I received executives from different sectors eager to copy our tools. They photographed management boards, took notes on Kanban details, and returned to their companies confident. But months later, they came back frustrated: the tools were there, and the results… were not.
The reason?
The reason was always the same: engagement was missing — the true “soul” that sustains the Toyota Production System (TPS).
- The Content: What Is TPS Really About?
Lean (or TPS) is not an organization manual.
It is a survival philosophy based on the relentless elimination of waste (Muda) through human development. It stands on two non-negotiable pillars:
- Just-in-Time: Produce only what is needed, at the right time and in the right quantity, exposing problems immediately.
- Jidoka (Autonomation): Embed intelligence into the process, giving the operator full authority to stop the line upon detecting any abnormality.
- Its Purpose and the Real Obstacles
Lean exists to create an organization that learns and adapts. However, engagement often fails due to barriers that go far beyond technique:
- Conflicting Measurement Systems: The biggest practical obstacle. Many companies try to be Lean but continue rewarding sheer volume. If a manager’s bonus depends on the machine running non-stop, he will never allow an operator to stop the line to fix a defect.
- Work as a “Single Task”: In many organizations, the employee is seen only as an executor. In Lean, every job has two parts: operate and improve. If there is no protected time for critical thinking, engagement simply cannot exist.
- “Tool-itis”: Focusing on how and forgetting why. Implementing tools as an end in themselves generates bureaucracy and resistance.
- Context and Applicability
Although born in manufacturing, TPS is universal. I have seen it transform hospitals, banks, offices, and agribusiness. In uncertain times, any company that is not using the brainpower of 100% of its people is wasting its most valuable asset. Engagement dictates the speed of innovation.
- Practical Experience: Leadership in theGenba
In my experience at Toyota do Brasil, my role as VP was not to be the “boss” who decides everything, but the Sensei (teacher).
In TPS, the leader must practice Genchi Genbutsu (go and see) to serve those who create value. Engagement happens when employees see their director on the shop floor — not to police them, but to understand the root cause of a failure.
If the leader does not “get their shoes dirty” in the Genba, they lose all legitimacy when asking the team for engagement.
True engagement emerges when the operator’s intelligence is valued, not only their physical strength.
I used to say that we were not just building cars; we were developing people who, by chance, built excellent cars.
The biggest enemy here is not a lack of technique, it is the command-and-control mindset, which suppresses problem-solving.
Leadership Guidelines Summary
| Obstacle | Impact on Engagement | Leader’s TPS-Aligned Response |
| Conflicting Measures | Punishes those who prioritize quality. | Align Targets: Quality and safety come before speed. |
| Static Work | Crushes operator creativity. | Kaizen Time: Reserve time for improvement thinking. |
| Blame Culture | Leads to hidden errors. | Servant Leadership: Go to the Genba to help, not to police. |
- Conclusion
Lean does not fail due to a lack of manuals, but due to a lack of consistency.
Real engagement is the natural consequence of a culture that respects human intelligence and prioritizes process integrity over speed. It is only achieved when every individual , from operator to CEO, understands that their daily work has two parts: doing the task and improving the task.
When continuous improvement (Kaizen) becomes part of the employee’s identity, implementation obstacles disappear, because Lean stops being an imposed project and becomes a lived culture.
My practical advice:
If you want engagement, stop selling Lean as an efficiency project and start living it as a human-support system for those who work.
Sérgio Niyama
Sergio Shizuo Niyama is Senior Advisor at Honsha. A Metallurgical Engineer from FEI, with extension studies in Materials at Universidade de Akita, Japan, he built a nearly 35-year career at Toyota do Brasil. He worked on strategic projects related to the Toyota Production System (TPS), including industrial plant implementation, leadership development, and structuring the corporate continuous improvement function, ultimately serving as Vice President of Production. He currently dedicates himself to sharing his TPS experience, supporting organizations in the pursuit of operational excellence with commitment, discipline, and a long-term vision.
Additional Links
Visit the Honsha website:
https://honsha.org/?noredirect=true
Explore other articles about Lean and Toyota at Honsha:
https://honsha.org/blog/
