Lean Method: productivity, quality and business sustainability

The Lean Method is a management philosophy that seeks efficiency and continuous improvement in any type of organization. Below, we will define what Lean Manufacturing is, its fundamental principles, and how it is applied to eliminate waste and optimize processes. We will also analyze its benefits in terms of productivity, quality, cost reduction, and its contribution to environmental sustainability.

Introduction to the Lean Method: Intelligent Efficiency

It is an innovative method that aims to optimize a company's production and management processes. Essentially, it reduces the investment of resources, time, and effort.

This business management philosophy emerged in the 1980s in Japan. Taiichi Ohno, an engineer at Toyota, wanted to make the brand's vehicle manufacturing, in particular, more efficient.

From then on, this method began to be used in all Japanese automotive factories. It later expanded to the rest of the world and proved applicable to any sector. Thus, Lean Manufacturing emerged in 2011 (APD, 2023).

What is the Lean Method and what are its principles?

The Lean Method is based on two fundamental pillars: first, continuous improvement, and second, respect for people.

• Continuous Improvement: Ongoing feedback helps evaluate and improve systems, making progressive changes to processes, products, and personnel. This eliminates waste and increases efficiency. In this way, the organization constantly adapts.
• Respect for People: Managers recognize the value of team contributions and customer opinions and take them into account. They also distribute tasks efficiently to foster team collaboration.

The principles of the Lean Method, developed from these two factors, are as follows:

1. Identify Value: First, understand customer needs. Then, define the value a product provides to meet those needs and communicate it to the team.
2. Create a value stream map that uses diagrams to visualize the project process.
3. Create a state of flow where we can say that "everything is going well." This increases team engagement and performance.
4. Establish an onboarding system. With this system, teams only work on what the customer needs, when they need it.
5. Strive for continuous improvement. Lean project management is not a one-time event, but an iterative process.

The 7 Wastes of Lean Manufacturing

As we have seen, the Lean Method seeks greater customer satisfaction by using the fewest possible resources and eliminating waste. This waste is called MUDA, a word derived from the Japanese word for "waste."

These enemies of efficient production are the following:

1. Motion: related to the workplace, ergonomics, and the movement of machines and people.
2. Overproduction: when unsolicited stock is generated.
3. Waiting: an inactive period adds no value and generates an additional cost in the final price of the products.
4. Transportation: when there is unnecessary movement of materials.
5. Overprocessing: when there is an excess of unnecessary processes.
6. Correction: due to the need to rectify a defective product.
7. Inventory: Storage requires good management and care to avoid obsolescence.

Key Tools and Techniques of the Lean Method

Lean tools are powerful allies for decarbonization in the fight against climate change.

• The 5S methodology. By creating an organized and clean work environment, it facilitates the identification of improvement opportunities and reduces energy and material consumption.
• Kanban and Just-in-Time. These systems allow production to be adjusted to actual demand, avoiding overproduction and reducing inventory, which also decreases energy and material consumption.
• TPM (Total Productive Maintenance). By involving all employees in equipment maintenance, it ensures that equipment operates efficiently and reliably, reducing energy consumption and emissions.
• Process Standardization. This allows for the identification and elimination of variations that can generate waste and increase resource consumption.

Digital technologies can enhance the benefits of Lean Green and accelerate the transition to more sustainable production by boosting these factors:

• Integration of renewable energies.
• Energy efficiency.
• Life cycle analysis.
• Circular economy.

Implementing the Lean Method for environmental sustainability

As we anticipated, by applying Lean Green tools and principles, organizations can reduce their carbon footprint, improve their efficiency, and contribute to environmental sustainability.

Some benefits of applying Lean Green to achieve decarbonization are:

• Reduced energy consumption.
• Minimized waste and improved waste management.
• Optimized transportation.
• Improved equipment efficiency through Total Productive Maintenance (TPM).

Benefits of the Lean Method in reducing costs and resources

There are numerous advantages to applying the Lean Method:

• It reduces costs by eliminating unnecessary expenses. Only enough is produced to meet customer demand.
• It generates customer satisfaction and thus improves customer relationships.
• It involves less risk because the entrepreneur makes decisions based on objective data. Since these decisions are better informed, they have less chance of error.
• It promotes teamwork. All employees participate and feel involved in the overall process. This increases their motivation and productivity and improves the work environment.
• It achieves greater efficiency. By creating a value stream map, activity is focused on customer needs, and unnecessary work on products and services that customers do not want is eliminated.
• It reduces problems such as lack of communication and unrealistic deadlines.
• It promotes continuous improvement with a permanent feedback loop. It encourages innovation, and projects improve thanks to creativity.
• Physical waste and waiting times between production stages are reduced, as are the possibility of overproduction or excessive processes.
• It achieves better execution times: faster responses and fewer delays and non-value-added activities.
• It yields higher-quality products because defects are minimized through quality controls.
• It enables better inventory management because monitoring prevents setbacks.

Lean Method: Continuous Improvement for Long-Term Sustainability

The successful implementation of a Lean Green strategy to contribute to decarbonization and sustainable development requires a systematic approach and the participation of all levels of the organization.

In line with these efforts, many companies are exploring the use of recycled materials such as PET plastic to reduce their dependence on virgin resources and minimize their environmental impact.

Examples of Lean Method Application in Sustainable Companies

For decades, numerous companies have implemented Lean Manufacturing. We'd like to share two success stories:

• Caterpillar. This American machinery manufacturer, founded in the 19th century, was one of the first Western companies to adopt Lean. It helped them reduce manufacturing times (APD, 2023).
• Ideatec. We use the Lean Method internally with our employees to drive continuous improvement in our production process. This allows us to use fewer resources: reducing investment, time, and effort.

In short, we can conclude that the Lean Method can significantly increase a company's effectiveness and contribute powerfully to environmental sustainability by reducing greenhouse gas emissions and waste generation.

References

Asana. (2025). What is Lean project management? The 5 principles for implementing it.

Association for Management Progress (APD). (2023). Lean Methodology: what it is and how it can boost your business model.

Atlassian. (n.d.) What is the Lean methodology? Lean Components. (2024). Lean Green. Lean Manufacturing and Environmental Sustainability.

Ideatec. (2025). Sustainability.