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Jidoka’s tool, JKK is a process of thought to highlight the implication and accountability of all in quality and improvement.


The Ji Kotei Kanketsu is a Japanese term meaning ” build quality with implication “. It is a system of thought that aims to have a permanent approach to deliver the best quality, to use the most appropriate methods and tools, and to actively improve its work.

Introduced throughout the company at all levels, the JKK highlights the Involvement and accountability of all in the work. In the principle of JKK, each step of work must not receive non-quality, must not create, and should not be followed.

The thought process

The JKK process is based on 6 questions. Each is to ask a question about how the work is done:

  1. Do you know your client, these needs and what he expects?
  2. Can you view the work and the different sequences?
  3. Do you have the information and tools to perform the job correctly?
  4. Can you evaluate the good and bad working conditions?
  5. Do you have the authority to stop the work if you do not have the right conditions?
  6. Can you document the process for the other team members?

The Jikotei Kanketsu promises the Involvement and confidence in the work. This process must be able to be used to train staff and to put in place quality in all phases of work.


University of Toyota (2009) – Toyota Tech

T. McCann – Jikotei Kanketsu, JKK Simple model of disciplined feed back in the system


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