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Supply Chain Planning. Explanation of Just-in-time philosophy of Taiichi Ohno. ('70)


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What is Just-in-Time? Definition

Just-in-time was pioneered by Taiichi Ohno in Japan at the Toyota car assembly plants in the early 1970s. It is a manufacturing organization philosophy.  JIT decreases waste by supplying parts only when the assembly process requires them. At the heart of JIT lies the kanban, the Japanese word for card. This kanban card is sent to the warehouse to request a standard quantity of parts as and when they have been used up in the assembly/manufacturing process. JIT requires precision, as the right parts must arrive "just-in-time" at the right position (work station at the assembly line). It is used primarily for high-volume repetitive flow manufacturing processes.

History of Just-in-Time

Historically, the JIT philosophy arose out of two other things:

  1. Japan's wish to improve its production quality. At that time, Japanese companies had a bad reputation as far as quality of manufacturing and car manufacturing in particular was concerned.
  2. Kaizen, also a Japanese method of continuous improvement.

The Just-in-time framework regards inventories as a poor excuse for bad planning, inflexibility, wrong machinery, quality problems, etc. The target of JIT is to speed up customer response while minimizing inventories at the same time. Inventories help to respond quickly to changing customer demands, but inevitably cost money and increase the needed working capital.

In 1990 James Womack wrote a book called "The Machine That Changed The World", introducing the terminology 'Lean Manufacturing'. Also you may encounter the word: 'Lean Production'. The principles behind these approaches do not substantially differ from the techniques developed by Ohno at Toyota.

Attention Areas of Just-in-Time

Typical attention areas of JIT implementations include:

  • Inventory reduction.
  • Smaller production lots and batch sizes.
  • Quality control.
  • Complexity reduction and transparency.
  • Flat organization structure and delegation.
  • Waste minimization.

External extended Just-in-Time

Through the arrival of Internet and Supply Chain Planning software, companies have in the mean time extended Just-in-time manufacturing to outside the company borders. By demanding from their suppliers to deliver inventory to the factory only when it's needed for assembly, making JIT manufacturing, ordering and delivery processes even speedier, more flexible and more efficient. In this way, Integrated Supply Networks (Demand Networks) or Electronic Supply Chains are being formed.

Just-in-time Forum
  List of Barriers to Just-in-Time | Barriers to JIT
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  Single Minute Exchange of Dies
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  Customer Support in Just in Time is Needed
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  Can Just-in-Time Work Without Kanban?
Just-in-Time is a basic philosophy or a paradigm. ...
  The Principles of Lean
Lean works on certain principles:
1. Identify...
  Classification of Lean Tools
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  Just-in-time Needs Flexibility
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  How to Reduce the Vendor Risks with Just-in-Time ?
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  The Impact of JIT on the Organization of Production Planning
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  Why is a Sustainable Business Approach Capable of Removing So Much Inefficiency after years of JIT?
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  Experiences with Including Purchased Parts in Kanban
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  Just-in-time: Problematic or Possible?
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  Definition of Just-in-time
JIT can be considered as:
1. A way of life
  Poka Yoke - Explanation
Poka Yoke is a method that shapes the production p...
  Information Velocity
Why is information velocity important in supply ch...
  Importance of Inventory Velocity
Why is inventory velocity so important in supply c...
  Lean Manufacturing Tools for Beginners
Could somebody tell me what are the most important...
  JIT is Playground for Big Companies
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  JIT in Variable Marketplaces
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Just-in-time Special Interest Group

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Just-in-time Education & Events

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Best Practices - Just-in-time Premium
  Combining JIT and Outsourcing
JIT and outsourcing go hand in hand.
On one s...
  Assumptions of Just-in-time (JIT)
Assumptions for effective JIT:
1. It depends ...

Expert Tips - Just-in-time Premium

Main Advantages of JIT?Sign up

Among the main causes for the success of Just-i...
Usage (application): Benefits of Just-in-time

Lean Tools to Attack WasteSign up

What lean tools you can use for every waste you ca...
Usage (application): Waste Management, Waste Tools Overview

7 Things to Avoid in Just-in-TimeSign up

The seven zeros or seven areas of wastes in JIT / ...
Usage (application): Just-in-Time Pitfalls

Use of Andon as Part of Just-in-timeSign up

Just-in-time is a pull-system. That means t...
Usage (application): Signaling Abnormalities

The 8 Wastes of Lean ExplainedSign up

T - Transport - Moving people, products & informat...
Usage (application): Waste Management

Standard Work in Just-in-TimeSign up

A just-in-time organization has to be capab...
Usage (application): Just-in-Time

Operation Management Issues and Focus AreasSign up

According to Heizer and Render, there are 10 de...
Usage (application): Operations Management, JIT, Kaizen

How to Focus your Improvement Efforts?Sign up

Very often organizations consider continuous impro...
Usage (application): Achieve More With Less, Kaizen, BPR, JIT, Lean, Value Chain

Synonyms of Just-in-time (JIT)Sign up

Instead of JIT, you may also find the following si...
Usage (application): Other Terms that are used to Indicate JIT

JIT IISign up

The term JIT II has been applied as co-location an...
Usage (application): JIT with supplier

Obtaining a High Supplier QualitySign up

W. Edward Deming, a well-known management consulta...
Usage (application): Best Practice to Consider

Resources - Just-in-time Premium

Summary of Lean Manufacturing and Maintenance. History, Tools, PROs and CONsSign up

Detailed presentation about Lean Production, inclu...
Usage (application): Operational Excellence, Maximizing Efficiency

The Role of Value Chain Functions, Quality Management and Innovation in Competitive AdvantageSign up

This presentation firstly presents the role of ...
Usage (application): Value Chain Management, Quality Management, Innovation, Operational Excellence

Financial Consequences from Implementing Lean ManufacturingSign up

In the last 30 years, many U.S. firms have adopted...
Usage (application): JIT, TQM

Lean Production for a Green EnvironmentSign up

Presentation about lean manufacturing and its rela...
Usage (application): Lean Production, Lean Manufcaturing

Lean Assessment ToolSign up

Spreadsheet calculates current and future Lean and...
Usage (application): Lean / Six Sigma Assessment

Managing your Inventory: Quick Introduction to Just in Time, Stock Review and ABC AnalysisSign up

This video gives a brief introduction to three pop...
Usage (application): Basic Understanding of 3Inventory Management Techniques

News about Jit PhilosophySign up


News about Jit Just-in-timeSign up


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Videos about Jit Just-in-timeSign up


Presentations about Jit PhilosophySign up


Presentations about Jit Just-in-timeSign up


Books about Jit PhilosophySign up


Books about Jit Just-in-timeSign up


More about Jit PhilosophySign up


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Compare with: Kaizen  |  Deming Cycle  |  Scientific Management  |  Six Sigma  |  Value Chain  |  Value Stream Mapping  |  CPFR  |  Bricks and Clicks  |  Delta Model  |  3rd Party Logistics (3PL)  |  RFID Technology

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