Lean Thinking and the Eight Types of Waste

Lean thinking is a practical way of improving work by creating more customer value with less waste. Waste is any activity that consumes time, effort, money or attention without creating value for the customer or protecting a necessary business requirement.

The direct answer is this: the common wastes in SME processes include defects, overproduction, waiting, unused talent, transportation, inventory, motion and extra processing. They are often remembered as DOWNTIME, but the point is learning to see waste in daily work.

Eight Types of Waste

Waste	Meaning	SME example
Defects	Errors, correction and rework.	Invoice sent with wrong details.
Overproduction	Doing work before it is needed.	Preparing reports nobody uses.
Waiting	People or work waiting for the next step.	Customer quote waiting for approval.
Unused talent	Not using employee knowledge.	Frontline staff know the issue but are never asked.
Transportation	Unnecessary movement of materials or information.	Paper forms moved between offices.
Inventory	Too much work or stock sitting idle.	Large backlog of open tickets.
Motion	Unnecessary movement by people.	Searching for files, tools or instructions.
Extra processing	More work than the customer or risk requires.	Multiple approvals for a low-risk routine decision.

Waste Identification Matrix

Question	Possible waste
Are we correcting the same issue repeatedly?	Defects
Is work waiting between steps?	Waiting
Are people searching for information?	Motion / information waste
Are we doing checks nobody uses?	Extra processing
Are there many open jobs but few completions?	Inventory / WIP

Panith Illustrative Case Study

Panith Illustrative Case Study: A small importer keeps printing order packs, scanning them, then manually entering the same information into a spreadsheet. Staff are busy, but much of the work is extra processing and motion. The first improvement is to remove duplicate entry and create one reliable source of order information.

References and Further Reading

SEO improvement pass: expanded depth and practical application

Expanded Practical Guidance

Waste reduction should not become cost cutting by another name. The first question is whether an activity creates customer value, protects necessary quality or manages real risk. If it does none of these, it is a candidate for removal or redesign.

Unused talent is especially important in SMEs. The people closest to the work often know exactly where time is wasted, but the business may not have a routine for capturing their ideas. Lean thinking depends on respect for people as well as process improvement.

Waste-to-Action Matrix

Waste found	First improvement question
Defects	How can we prevent the error earlier?
Waiting	What is the work waiting for and why?
Motion	What are people searching for or moving unnecessarily?
Extra processing	Which check or approval no longer protects value?
Unused talent	Who knows the workaround and has not been asked?

Practical Next Step

Run a 30-minute waste walk on one process. Ask the team to identify waste without naming blame. Convert only the top two findings into action.

Visual Learning Aids

The following visual structures translate this lesson into practical management tools. They are designed for SME use and can be copied into a workshop, team meeting or improvement plan.

1. Process Diagram

Input	Work system	Output	Owner	Main risk
Customer need or business trigger	Lean Thinking and the Eight Types of Waste applied to the business process	Reliable customer or internal outcome	Process owner	Rework, delay or quality failure

2. Flowchart

[Start] Trigger received
   |
   v
[Understand] Work is mapped
   |
   v
[Decide] Bottleneck or waste is identified
   |
   v
[Act] Improvement option is selected
   |
   v
[Review] New way of working is tested
   |
   v
[Improve] KPI review confirms next action

3. Decision Tree

Is the issue clear and evidence-based?
- No: clarify the problem, collect examples and involve the people closest to the work.
- Yes: does it affect customers, cost, quality, risk or growth?
  - No: document the learning and monitor lightly.
  - Yes: assign an owner, choose a practical method, define success measures and review progress.

4. Priority Matrix

	Low effort	High effort
High impact	Do first: quick operational improvement	Plan carefully: strategic improvement project
Low impact	Do only if it removes friction	Avoid or defer unless required for risk, compliance or learning

5. Implementation Timeline

Stage	Typical SME timing	Output
Diagnose	Week 1	Problem statement and evidence
Design	Week 2	Chosen method, owner and measures
Test	Weeks 3-4	Small pilot or controlled trial
Standardise	Weeks 5-6	Checklist, SOP, dashboard or decision rule
Improve	Monthly	Review notes and next improvement action

6. Illustrative Performance Chart

Illustrative example: replace these sample scores with real business data before using the chart for decisions.

Measure	Current score	Target score	Visual gap
Clarity	2/5	4/5	2 blocks to 4 blocks
Ownership	2/5	5/5	2 blocks to 5 blocks
Measurement	1/5	4/5	1 block to 4 blocks
Consistency	3/5	4/5	3 blocks to 4 blocks

7. Maturity Model

Level	Maturity stage	What it looks like	Next improvement
1	Informal work	Informal work is visible in the way the business manages this topic.	Documented process
2	Documented process	Documented process is visible in the way the business manages this topic.	Measured process
3	Measured process	Measured process is visible in the way the business manages this topic.	Controlled process
4	Controlled process	Controlled process is visible in the way the business manages this topic.	Continuously improved process
5	Continuously improved process	Continuously improved process is visible in the way the business manages this topic.	Sustain and refine through periodic review

8. Comparison Table

Dimension	Current-state process	Future-state process
Decision basis	Experience, urgency or individual memory	Evidence, agreed criteria and visible trade-offs
Accountability	Unclear or dependent on the founder	Named owner with clear responsibility and review rhythm
Measurement	Discussed only when something goes wrong	Tracked using cycle time, first-time-right rate, cost and customer impact
Scalability	Works only while the team is small	Can be taught, repeated and improved as the business grows