In an earlier post we pointed-out that the most important knowledge of all is knowledge of our own work and value stream — we must know it in detail.
Bill Conway often said, “All of the waste comes from the work…what we work on and how we do that work. To improve it, we need to get closer to the work.”
This means we must know how long it takes, where it piles up, and how well it is synchronized with the needs of the customers.
A simple but proven way to learn more about the work is a Waste Walk or by “going to gemba.”
As you may know, “Genba,” which has been popularized as “Gemba,” is a Japanese word meaning “the real place.” The word is widely used in Japan, where detectives frequently refer to a crime scene as genba, and Japanese TV reporters often refer to themselves as reporting from genba/gemba. In the business realm, gemba refers to the place where work is done and value created; in manufacturing the gemba is typically the factory floor, but looking further afield it can be any location — a construction site, administrative office, or sales bullpen — where the actual work is being done.
When it comes to Continuous Improvement (CI), problems are most visible in these areas, and the best improvement ideas will come from going to gemba. There is no substitute for ‘going to the work’ and there are things that can only be learned by going there and watching the work with a purpose. Thus a gemba walk, or Waste Walk, is an activity that takes management and other stakeholders to the front lines to look for waste and opportunities for improvement; to observe the work where the work is being done, and to identify what goes wrong or could go wrong, how often it does or could go wrong, and the associated consequences. It fits nicely into the “Deming Cycle” shown above, as it is a method of “checking” our work.
The Waste Walk is designed to help everyone understand the value stream and its problems; it is not to review results and make superficial comments. Gathering input from the people closest to the work is an important element of making improvements as well. After all, they are the ones that know the most about the work!
Unfortunately, and as noted in the above-referenced past post, in most organizations there is a knowledge barrier that holds the waste in place: the people who know the work best are seldom in a position to know the big picture so when they see waste, they often assume there must be a reason for it. And if they know of better ways of doing something, they often lack the influence to make any significant changes. Including their input in a waste walk can help remedy this problem.
Our next post will focus on best practices for executing an effective waste walk.