3. The Definition of waste
What does waste mean to business?
It is tempting to want to define waste from the view of
manufacturing to encompass all of business waste.
A definition of waste is any product from the business that does
not provide value for the business.
It is a good definition, however, it has a narrow spectrum…
Waste is any activity or process that adds costs but adds no value
(for the customer).
4. Origination
Waste from the processes, activities and customer-centric
perspective was pioneered by Taiichi Ohno(1912 - 1990); a
Japanese industrial engineer considered the father of Toyota
Production System.
He Identified waste which he called “muda” as being of seven
types.
5. Types of Waste
• The seven most common types of waste can be remembered
using the mnemonic “TIM WOOD”.
• T - Transport
• I - Inventory
• M - Motion
• W - Waiting
• O - Over-processing
• O - Overproduction
• D - Defects
6. Types of Waste
• Transportation adds time to the process without increasing value,
and creates an opportunity for damage to occur.
• "The Unnecessary Movement of Materials or Documentation“
Examples are moving paper work over distances to be signed, plant
layout that encourages undue movement of forklift, Multiple hand-
offs of electronic data. Approvals etc.
7. Types of Waste
• 'just in case inventory‘ i.e. purchasing or making things before
they are needed which ties up cash and requires additional
storage facilities.
• Excess storage can cause stock damage, and materials can
degrade in store.
• “Any stock that is Not Required for Customer Orders“
Examples include Unread email, excess office
supplies, stored items not currently in use and
employees that have skill that are not being
used to their fullest
8. Types of Waste
• Motion takes time and adds no value. Work spaces that are
not ergonomic lead to a waste of motion, such as stretching,
twisting, bending etc.
• "The Movement of People Within the Workspace“
• All kind of unnecessary motion is being caused by poor
working standard practices, poor (not optimal) process design
or work area layout.
• Examples are walking between offices, Central filing system or
just when one has to get up and walk or travel to get
something to do their job.
9. Types of Waste
• When a resource(employees, customer, material, or
equipment) is sitting idle or waiting.
• Waiting constricts smooth flow; it interrupts the work rhythm.
• "Defer an Action for a Time Until an Event Occurs“
• Examples are; Delays in getting approvals, waiting for raw
materials and parts.
10. Types of Waste
• Over processing is to do more than is necessary
• "Doing More Than needed to Meet the Customer
Requirement“
• Examples are; completing two or three inspections, measuring
components more than once, relying on inspections, rather
than designing the process to eliminate errors
Making the job more cumbersome than need be…
11. Types of Waste
• Overproduction arises when the company is producing more than
the customer really requires.
• "Producing More than is Required“
• Over-production is generally regarded as the worst type of waste. A
process that continues when its output is not required causes
excess inventory, and so leads to all the other wastes.
Examples are; making to plan rather than to order,
Filling in more fields on a form that are needed,
entering the same data twice, producing reports no
one needs
12. Types of Waste
• Defect sets in when any additional work is performed on a
product or service.
• “Right first time avoids scrap and rework“
• Defects are caused by bad manufacturing processes (caused
by human or machine errors)
• time you redo, rewrite, rework, repair, or scrap something
does not add any value.
Examples are; Data entry errors, design
flaws, employee turnover etc.