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Kaizen Continuous Improvement

1980
  • Masaaki Imai

Kaizen is a Japanese term meaning “change for the better” or “continuous improvement.” It is a core philosophy of lean manufacturing that focuses on making small, ongoing, positive changes to improve processes and eliminate waste. Kaizen involves all employees, from senior management to assembly line workers, fostering a culture where everyone is empowered to suggest and implement improvements.

The Kaizen philosophy is built on the belief that large-scale, revolutionary changes are not always necessary for progress. Instead, a multitude of small, incremental improvements made consistently over time can lead to significant long-term results. This approach is often contrasted with the Western business practice of “innovation,” which typically seeks radical, top-down changes. Kaizen is a bottom-up approach. It encourages a mindset of constant vigilance for opportunities to improve, no matter how small. A common tool used in Kaizen is the PDCA (Plan-Do-Check-Act) cycle, a four-step model for carrying out change. ‘Plan’ involves identifying an opportunity and planning a change. ‘Do’ means implementing the change on a small scale. ‘Check’ involves analyzing the results to see if the change was effective. ‘Act’ means implementing the change on a broader scale if successful, or starting the cycle again with a different plan if not. This iterative process ensures that improvements are data-driven and sustainable. The power of Kaizen lies in its ability to create a deeply engaged workforce that takes ownership of their processes and actively contributes to the company’s success.

UNESCO Nomenclature: 5312
– Management

Type

Abstract System

Disruption

Substantial

Usage

Widespread Use

Precursors

  • Shewhart cycle (plan-do-study-act) by Walter A. Shewhart
  • W. Edwards Deming’s teachings on quality management in post-war japan
  • training within industry (twi) program from the US department of war

Applications

  • agile software development retrospectives
  • personal productivity habits (e.g., atomic habits)
  • healthcare quality improvement cycles (pdca)
  • educational curriculum development

Patents:

NA

Potential Innovations Ideas

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Related to: kaizen, continuous improvement, lean, PDCA, employee engagement, incremental change, process improvement, management

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Historical Context

(if date is unknown or not relevant, e.g. "fluid mechanics", a rounded estimation of its notable emergence is provided)

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