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 House diagram showing Just In Time, Jidoka, Heijunka, Standardized Work, and Kaizen positioned within the Toyota Production System architecture
This Lean TPS Basic Training visual explains how Kaizen operates within the governed architecture of the Toyota Production System. Just In Time and Jidoka function as structural pillars, Heijunka and Standardized Work provide stability, and Kaizen strengthens the system only when standards and control are in place. The image reinforces
Lean TPS Swiss Cheese Model showing how governance failures propagate from organizational systems to gemba outcomes, and how TPS prevents conflicts that Theory of Constraints resolves downstream.
Theory of Constraints manages conflict after instability forms. Lean TPS prevents conflict through governance of demand, capacity, and Quality before execution begins.
Takahama Line 2 Andon board showing real time production status and Quality control in the Toyota Production System
Dashboards and scorecards increase visibility, but they do not govern work. In Lean TPS, Andon exists to control abnormality in real time by enforcing stop authority, response timing, and leadership obligation to protect Quality.
Lean TPS Disruptive SWOT transforms traditional SWOT from a static listing exercise into a governed leadership system. Through Survey, Prioritize, and Action, it aligns strategic direction with Quality, system stability, and explicit leadership obligation within a Lean TPS governance framework.
Balance scale showing Respect for People and Continuous Improvement grounded in Quality governance within Lean TPS.
In Lean TPS, Respect for People and Continuous Improvement are not independent goals. Both emerge from Quality governance, where leaders define normal work, make abnormality visible, and respond to protect system stability.
Lean TPS shop floor before and after 5S Thinking showing visual stability that enables problem detection and problem solving
5S Thinking is not about making the workplace look clean or impressive. In Lean TPS, it functions as a visual reset that restores the ability to see normal versus abnormal conditions. When the environment is stabilized, problems surface quickly, Quality risks are exposed earlier, and problem solving becomes possible at