What Is Kaizen? Kaizen is a Japanese term meaning "change for the better" or "continuous improvement." It is a concept referring to business activities that continuously improve all functions and involve all employees from the CEO to the assembly line workers. Kai (Change) Zen (Good) A H istory of Kaizen The history of Kaizen begins after World War II when Toyota first implemented quality circles in its production process. This was influenced in part by American business and quality management teachers who visited the country. The term Kaizen actually became famous around the world through the works of Masaaki Imai. In the book Kaizen: The Key to Japan’s Competitive Success , Imai noted how Japan’s companies were process-oriented, and so fundamentally opposed to America’s results-oriented culture. Breaking down Japan’s success in quality control and improvement, he found that process-oriented thinking promotes transparency and a holistic systems view that is not b...