Leantycoon
Loading...
Loading...
The Seven Wastes were identified by Taiichi Ohno during the development of the Toyota Production System. These wastes exist at every level of an organization and directly impact productivity, cost, quality, and customer satisfaction.
In manufacturing, only two types of work exist: value-added and non-value-added. Value-added work is something the customer is willing to pay for. Everything else is waste.
Example:
Installing a part: 5 seconds (Value-added)
Walking, searching, waiting: 155 seconds (Non-value-added)
Total Time: 160 seconds
Value-added: 5 seconds
Non-value-added: 155 seconds
Producing more than needed, faster than needed, or before it is required is the most dangerous waste. It leads to excess inventory, rework, storage costs, and hidden quality problems.
Waiting occurs when processes are not synchronized. Causes include lack of parts, machine breakdowns, poor communication, long setup times, and workflow imbalance. Idle time is still paid time.
Unnecessary movement of materials creates cost without adding value. Poor plant layout, bad planning, and overproduction often trigger wasted transportation.
Performing extra work that does not add customer value — such as excessive polishing, unnecessary inspections, or repeated packaging — increases cost without improving the product.
Excess inventory hides inefficiencies, ties up capital, and increases storage costs. Most organizations carry more inventory than necessary due to unreliable systems and poor planning.
Any unnecessary movement of people, equipment, or materials that does not add value is motion waste. Poor layout, unclear standards, and weak visual management systems increase motion waste.
Defects result in rework, scrap, customer dissatisfaction, and additional cost. Root causes include poor training, weak 5S implementation, inaccurate SOPs, and lack of accountability.
Eliminating the Seven Wastes improves productivity, reduces cost, enhances quality, and strengthens customer trust. Organizations that actively identify and remove waste build sustainable operational excellence.