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Last verified: 16 May 2026.<\/strong> Lean Manufacturing is a production methodology focused on systematic elimination of waste (muda) and continuous flow of value to the customer. The term was coined by John Krafcik in his 1988 Sloan Management Review<\/em> article “Triumph of the Lean Production System,” derived from the MIT International Motor Vehicle Program (IMVP) study of global automotive plants. The methodology was popularized for Western readers in The Machine That Changed the World<\/em> by James P. Womack, Daniel T. Jones, and Daniel Roos (Rawson Associates, 1990, ISBN 0-89256-350-8) and operationalized in Womack and Jones’s follow-up Lean Thinking<\/em> (Free Press, 2nd ed. 2003, ISBN 0-7432-4927-5).<\/p>\n “Lean is the way to do more and more with less and less \u2014 less human effort, less equipment, less time, and less space \u2014 while coming closer and closer to providing customers with exactly what they want.”<\/em> \u2014 James P. Womack and Daniel T. Jones, Lean Thinking<\/em>, Free Press, 2003, p. 15.<\/p>\n<\/thread><\/blockquote>\n Lean is the Western academic codification of the Toyota Production System (TPS) developed by Taiichi Ohno and documented in Toyota Production System: Beyond Large-Scale Production<\/em> (Productivity Press, 1988, ISBN 0-915299-14-3). Per Matthias Holweg’s 2007 historical analysis in the Journal of Operations Management<\/em> (DOI: 10.1016\/j.jom.2006.04.001), the term “lean” was a marketing-friendly relabel of TPS that made the methodology more accessible to non-Japanese manufacturers in the 1990s. The technical content is largely the same; the framing differs.<\/p>\n Per Womack & Jones 1996\/2003, lean manufacturing rests on five principles applied iteratively:<\/p>\n The five principles are sequenced \u2014 applying them out of order produces partial results. Specifying value before mapping the value stream avoids optimizing the wrong process; creating flow before pull produces overproduction; pursuing perfection without flow yields no progress.<\/p>\n Ohno 1988 Chapter 2 identifies seven categories of waste, which form the operational target for lean elimination:<\/p>\n An eighth waste \u2014 Unutilized Talent<\/strong> \u2014 was added by Liker (2004) to capture the failure to engage operator knowledge and creativity. The eight-waste version is sometimes called “TIMWOODS” (Transportation, Inventory, Motion, Waiting, Overproduction, Over-processing, Defects, Skills).<\/p>\n “The most important objective of the Toyota system has been to increase production efficiency by consistently and thoroughly eliminating waste.”<\/em> \u2014 Taiichi Ohno, Toyota Production System<\/em>, Productivity Press, 1988, p. 8.<\/p>\n<\/blockquote>\n Most operations-management terms recognizable as “lean tools” map to specific principles or wastes:<\/p>\n Plants that implement lean tools without the underlying principles often report disappointing results. The tools are instruments; the principles are the strategy.<\/p>\n OEE measurement is the diagnostic that surfaces lean implementation effectiveness. Each of the Six Big Losses (Nakajima 1988) maps to one or more of the Seven Wastes:<\/p>\n The framework is consistent: TPM provides the maintenance methodology, lean provides the waste framework, OEE provides the measurement, and the Six Big Losses provide the operational decomposition. The four pieces were designed to work together.<\/p>\n The lean principles have been applied beyond discrete manufacturing: lean services (Bowen & Youngdahl 1998), lean healthcare (Toussaint & Berry 2013), lean software development (Poppendieck 2003), lean startup (Ries 2011). The applications adapt the value definition and waste categories but preserve the five-principle structure. The cross-industry generalizability is one reason lean has remained dominant in operations management for three decades \u2014 the framework scales to non-manufacturing contexts that TOC, Six Sigma, or pure TPS do not.<\/p>\n John Krafcik in his 1988 Sloan Management Review<\/em> article, based on MIT International Motor Vehicle Program research.<\/p>\n Lean is the Western academic codification of TPS. The technical content largely overlaps; the framing and terminology differ. Per Holweg 2007, the relabel made the methodology accessible to non-Japanese manufacturers.<\/p>\n Specify Value, Identify the Value Stream, Create Flow, Establish Pull, Pursue Perfection. Per Womack & Jones, Lean Thinking<\/em>.<\/p>\n Overproduction, Waiting, Transportation, Over-processing, Inventory, Motion, Defects. Per Ohno 1988.<\/p>\n Unutilized Talent \/ Skills, added by Liker 2004 to capture failure to engage operator knowledge.<\/p>\n OEE measures the operational effectiveness that lean targets. The Six Big Losses framework maps directly to the Seven Wastes.<\/p>\n Yes. TOC identifies where to focus (constraint); lean identifies what to eliminate (waste). Combined approaches (Velocity, 2009) sequence them.<\/p>\n Yes. Lean services, healthcare, software development, and startup methodologies all apply the five-principle structure with adapted value and waste categories.<\/p>\n Japanese for waste. Used in lean terminology alongside mura (unevenness) and muri (overburden) \u2014 the three families of waste in TPS.<\/p>\n OEE measurement provides the lean diagnostic; Six Big Losses decomposition maps loss to waste category; the platform’s real-time visibility supports andon, kaizen events, and value stream mapping with empirical data.<\/p>\n Author: Fran\u00e7ois Coulloudon, CEO, TeepTrak. Cross-references: OEE<\/a>, Six Big Losses<\/a>, Takt Time<\/a>, Andon<\/a>. Last verified 16 May 2026 against Womack & Jones 1990\/2003 and Ohno 1988.<\/em><\/p>\n\n
The Five Principles of Lean Thinking<\/h2>\n
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The Seven Wastes (Seven Muda) \u2014 Ohno’s framework<\/h2>\n
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Lean tools and their position in the framework<\/h2>\n
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Lean and OEE<\/h2>\n
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Lean beyond manufacturing<\/h2>\n
Frequently asked questions<\/h2>\n
Who coined the term “lean manufacturing”?<\/h3>\n
Is lean manufacturing the same as Toyota Production System?<\/h3>\n
What are the 5 principles of lean?<\/h3>\n
What are the 7 wastes?<\/h3>\n
What is the eighth waste?<\/h3>\n
How does lean relate to OEE?<\/h3>\n
Is lean compatible with Theory of Constraints?<\/h3>\n
Can lean be applied outside manufacturing?<\/h3>\n
What is muda?<\/h3>\n
How does TeepTrak support lean implementations?<\/h3>\n
References<\/h2>\n
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