Reclaiming the Toyota Production System: My Lean TPS Journey of Learning, Teaching, and Leadership

Lessons in Lean TPS History and Practice visual showing David Devoe’s Toyota training, Japan immersion, and Jishuken leadership development through Lean TPS Basic Training.
Lessons in Lean TPS History and Practice shares how Toyota’s principles of Continuous Improvement and Respect for People shaped modern Lean TPS. Through Japan-based training and North American Jishuken experience, this story shows how structure, discipline, and leadership accountability turn TPS from a system of tools into a culture of learning and improvement.

My journey with the Toyota Production System began at Raymond Industrial Equipment in Brantford, Ontario. Those early years shaped my understanding of how discipline, structure, and leadership accountability create stability and continuous improvement. Later, through Toyota-led Jishuken activities across North America, I learned to see waste, design flow, and build systems that connect people and process. These experiences defined what I now call Lean TPS, the Thinking People System.

At Raymond, Standardized Work, Takt Time, and the habit of Genchi Genbutsu were not abstract ideas. They were daily routines that built stability. Leaders were expected to go and see, support problem solving, and develop people through structured practice. This was not about awareness; it was about ability. The two pillars of TPS, Continuous Improvement and Respect for People, were made visible through action. Everyone was responsible for seeing problems and taking part in improvement.

In Japan, my understanding deepened. Training began with observation at the Gemba. We studied time, motion, and balance, learning to separate fact from opinion. Tools such as the Yamazumi Board and Standardized Work Combination Table were used to make time visible and uncover waste. Respect for people meant giving members authority to stop processes, correct issues, and take part in Kaizen. Leaders were trained to teach through doing, not by lecture. The lessons were simple but powerful: stability first, flow second, and improvement always.

Jishuken, Toyota’s method for leadership development through self-initiated study, was where these lessons became real. In North America, I joined cross-functional teams that studied actual processes, identified gaps, and tested countermeasures. The work was hands-on. Each study deepened capability and strengthened the ability to sustain improvement. Jishuken turned problem solving into leadership training and taught us that stability and respect cannot be separated. When leaders engage directly, problems surface, and improvement becomes natural.

When Toyota idled the Brantford facility in 2010, it marked a turning point in my career. I chose to dedicate myself to teaching and carrying forward the discipline of Lean TPS. Across industries such as aerospace, construction, and medical devices, I have seen the same truth: Lean TPS succeeds when leaders accept responsibility for structure and stability. Without leadership, 5S becomes cleaning, Standardized Work becomes paperwork, and A3 becomes reporting. With leadership, they become tools for learning, coaching, and building capable teams.

The Toyota Production System has survived war, economic collapse, automation, and a global pandemic because its principles do not change. Continuous Improvement and Respect for People are not optional values. They are the system. They define how work is done, how people learn, and how organizations sustain excellence.

Lean TPS is not about copying Toyota’s tools. It is about understanding why the system works and applying that thinking with integrity. The goal is not perfection but progress, built every day by people who learn and lead at the same time.

Lean TPS Kaizen Leadership Skills Radar Chart showing leadership, team, technical, project management, and experience scores for structured evaluation.
The Kaizen Leadership Skills Checklist measures leadership effectiveness through structured evaluation, data-based analysis, and continuous improvement in Lean TPS.
Lean TPS governed execution system diagram showing Standardized Work, Visual Control, Jidoka, Stop–Call–Wait, Kaizen, and leadership engagement controlling performance at the point of execution.
Lean TPS governed execution system showing how control at the point of work produces Quality, stability, and continuous improvement.
Nomura Memo No. 31 A3 showing the Nomura Method for controlled execution with Genchi Genbutsu Standardized Work Mieruka Jidoka and Kaizen producing Dantotsu Quality
Nomura Memo No. 31 marked the first step in Toyota BT Raymond’s Lean TPS transformation, establishing leadership-driven improvement through Jishuken and structured problem-solving.
Dantotsu Quality development structure based on TPS showing Nomura framework, 16 chapters, and system control elements
Mr. Sadao Nomura’s Dantotsu Quality Method defines Toyota’s pursuit of zero defects through structured Kaizen, Jishuken leadership, and continuous improvement.
Lean TPS diagram showing Cost of Poor Quality as a failure of execution control, including design, manufacturing, customer sources, deviation flow, control loop, and prevention system
A Lean TPS visual showing how the Cost of Poor Quality results from uncontrolled execution and how system-level control prevents it.
Lean TPS change governance model showing Standardized Work, abnormality, and leadership response controlling execution and Quality
Lean TPS model showing how execution is controlled through Standardized Work, abnormality, and required leadership response