Muda, Mura and Muri
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Abstract
Muda, Mura and Muri is a concept developed by car manufacturer Toyota and is referred to as the 3 M's of waste in lean manufacturing. They collectively describe the practices companies can eliminate of to reduce non-value adding use of resources.
Muda
Muda is the Japanese word for "waste" and relates to any activity or practice that does not in any way produce value for the customer. There are, as explained by the so-called "father of the Toyota production system", Taiichi Ohno, 8 categories of waste. Simply eliminating Muda will not be of help to the company without finding the reason for the waste, which will usually correlate with the two other wasteful practices; Mura and Muri.
