Browse Definitions :
Definition

seven wastes

What are the seven wastes?

The seven wastes are categories of unproductive manufacturing practices identified by Taiichi Ohno, the father of the Toyota Production System (TPS). The categories are an integral part of the TPS (known as lean production in North America).

Following are the seven wastes, as categorized by Taiichi Ohno:

  • Overproduction -- Manufacture of products in advance or in excess of demand wastes money, time and space.
  • Waiting -- Processes are ineffective and time is wasted when one process waits to begin while another finishes. Instead, the flow of operations should be smooth and continuous. According to some estimates, as much as 99 percent of a product's time in manufacture is actually spent waiting.
  • Transportation -- Moving a product between manufacturing processes adds no value, is expensive and can cause damage or product deterioration.
  • Inappropriate processing -- Overly elaborate and expensive equipment is wasteful if simpler machinery would work as well.
  • Excessive inventory wastes resources through costs of storage and maintenance.
  • Unnecessary motion -- Resources are wasted when workers have to bend, reach or walk distances to do their jobs. Workplace ergonomics assessment should be conducted to design a more efficient environment.
  • Defects -- Inspecting and quarantining inventory takes time and costs money.

Lean manufacturing is based on a just-in-time model of production to avoid the waste associated with overproduction, waiting and excess inventory.

Since the categories of waste were established, others have been proposed for addition, including:

  • Underutilization of employee skills -- Although employees are typically hired for a specific skill set, they always bring other skills and insights to the workplace that should be acknowledged and utilized.
  • Unsafe workplaces and environments -- Employee accidents and health issues as a result of unsafe working conditions waste resources.
  • Lack of information or sharing of information -- Research and communication are essential to keep operations working to capacity.
  • Equipment breakdown -- Poorly maintained equipment can result in damage and cost resources of both time and money.

Although the seven wastes list was created for manufacturing, the categories can be adapted to apply to most types of workplaces.

See also: lean programming.

Learn More About IT:
> David McBride writes about the seven wastes.
> Wikipedia writes about the seven wastes in its entry for Muda.
> Agrilean explains how the seven wastes rob organizational value.

This was last updated in March 2009

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • compliance audit

    A compliance audit is a comprehensive review of an organization's adherence to regulatory guidelines.

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

SearchSecurity

  • orphan account

    An orphan account, also referred to as an orphaned account, is a user account that can provide access to corporate systems, ...

  • voice squatting (skill squatting)

    Voice squatting is an attack vector for voice user interfaces (VUIs) that exploits homonyms (words that sound the same but are ...

  • WPA3

    WPA3, also known as Wi-Fi Protected Access 3, is the third version of the security certification program developed by the Wi-Fi ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity policy

    Business continuity policy is the set of standards and guidelines an organization enforces to ensure resilience and proper risk ...

  • business continuity and disaster recovery (BCDR)

    Business continuity and disaster recovery (BCDR) are closely related practices that describe an organization's preparation for ...

  • warm site

    A warm site is a type of facility an organization uses to recover its technology infrastructure when its primary data center goes...

SearchStorage

  • cache memory

    Cache memory, also called CPU memory, is high-speed static random access memory (SRAM) that a computer microprocessor can access ...

  • disk array

    A disk array, also called a storage array, is a data storage system used for block-based storage, file-based storage or object ...

  • enterprise storage

    Enterprise storage is a centralized repository for business information that provides common data management, protection and data...

Close