Kaizen is based on the involvement of all employees, wherein singular changes typically do not improve major production metrics above a 20% threshold.
"By focusing exclusively on small improvements, an organization may miss an opportunity to gain a competitive advantage in costs and customer service.
If competitors take a big leap, an organization will be left behind, still making candles in a light bulb market.
"[2] Kaikaku means that an entire business is changed radically, typically in the form of a project.
Kaikaku can also be initiated when management judges that diminishing improvements from ongoing Kaizen efforts suggest a need for more radical change.