TIMWOODS

Introduction: TIMWOODS

TIMWOODS is an acronym used in Lean management to identify and eliminate eight types of waste in business processes. By focusing on these wastes, organisations can improve efficiency, reduce costs, and deliver greater value to customers.

Background

The concept originates from the seven wastes (Muda) identified in the Toyota Production System, developed by Taiichi Ohno. These wastes represent non-value-adding activities that increase cost and reduce productivity. Over time, an eighth waste—Skills—was added to emphasise the importance of using employee talent effectively. Together, these eight elements form the TIMWOODS framework, providing a practical checklist for Lean improvement projects and daily operations.

Key Elements / Features

The eight wastes of TIMWOODS are:

1. Transport: Unnecessary movement of materials between locations.
2. Inventory: Excess stock that ties up capital and space.
3. Motion: Inefficient movement of people or equipment.
4. Waiting: Idle time when resources are not being used.
5. Overproduction: Producing more than required or earlier than needed.
6. Overprocessing: Adding extra steps that do not add customer value.
7. Defects: Errors leading to rework or scrap.
8. Skills: Failing to utilise the full potential of employees.

Applications / Examples

• Manufacturing: Reducing motion waste on assembly lines through ergonomic layouts.
• Healthcare: Minimising waiting times for patients between procedures.
• Logistics: Cutting unnecessary transport between storage locations.
• Office environments: Engaging employees in improvement projects to better use their skills and insights.

Relevance / Impact

Systematically applying TIMWOODS helps organisations pinpoint inefficiencies and streamline workflows. It enhances cost-effectiveness, reduces lead times, and improves quality. Additionally, by recognising Skills as a key element, it promotes employee involvement and continuous improvement. As a cornerstone of Lean thinking, TIMWOODS supports long-term competitiveness and operational excellence.

See also

• 3M
• Muda
• Mura
• Muri