Poka Yoke and Jidoka/Difference between Jidoka and Poka Yoke
Jidoka comprises three Japanese words : Ji = Self, Do = Action, Ka = Method.

This means Self Acting Methodology : Autonomous Machine. Whenever a machine senses a problem, it stops itself immediately. The purpose : Defective parts should not be made in the first place. The concept of Jidoka was invented by Sakichi Toyoda in 1920.

Later, Dr Shigeo Shingo expanded this concept and too it to new heights. He advised more error proofing ways (Poka Yoke) which will not allow the defect to take place or will make the system detect the defect immediately. Dr Shingo invented this methodology in 1960.

So, the difference : In Jidoka, we stop the operation and sort the problem out. Poka yoke does not allow the problem to occur. Hence, no need to stop the operation.


About Yash Khetrapal: Yash has worked with the corporate world for more than 39 years, holding senior positions in big multinationals. Yash has undergone intensive training at Japan’s various plants 5 times and also Leadership Training at National University Singapore. Further, he studied, Boeing’s logistics system at Everett America. In addition he has taken Japanese Language Training at AOTS Nagoya (CKC : Toyota city) wherein he received language training of Chuu Kyuu level. After doing his engineering in 1982 he later gained a PGDBA in Operations. Yash has extensively studied various ancient Indian scriptures like Ram Charit Manas, Bhagwat Gita, Shukra Neeti, Chanakya Neeti, Arth Shastra, Panchtantram, etc. and relates learning from these to the current corporate world. His specialization lies in Leadership Training to senior functionaries along with other behavioral skills and technical Skills, which is backed by a broad experience in Supply Chain, Warehousing and Logistics and Cost Management, with shop floor exposure to more than 200 industries in India and Japan.

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