Five Common Pitfalls in Lean & Six Sigma Implementations
I am a Management Consultant. My field of expertise is Lean & Six Sigma. Listening to organizations, advising them, and guiding them in Lean transformation is something I am passionate about. The most fascinating aspect of my work is the diversity of those who lend me their attention: from the Mining Industry to Public Institutions, and even the SMEs that embody the cliché of ambitious teenagers starting a company in a garage.
In the ever-evolving world of business, organizations constantly seek ways to improve efficiency, reduce costs, and optimize their operations. For many, adopting the principles of Lean Management and Six Sigma has become an essential path toward achieving these goals. These methodologies, originating from industrial giants such as Toyota and Motorola, promise significant gains in productivity, quality, and corporate culture.
However, implementing Lean and Six Sigma is not as simple as it may appear. It requires far more than the mechanical application of tools and techniques. This article explores five common pitfalls organizations may encounter on their journey toward Operational Excellence, highlighting the need for reflection, perseverance, and active engagement from all stakeholders.
From the role of employee expertise to the crucial importance of leadership by example, from resistance to change to the temptation to prioritize tools over philosophy, we will uncover the challenges every organization is likely to face. Ultimately, the path toward continuous improvement is filled with obstacles. But by understanding these pitfalls, organizations can better prepare themselves to meet the challenge and reap the rewards of their commitment to Lean and Six Sigma… Excellence.
1. Assuming the Employee Is Automatically the Expert
One of the fundamental principles of Lean is respect for the operator—putting people first. This principle recognizes the operator, the employee, as the person who knows the work best. Every employee performs their tasks every day and is therefore in the best position to understand the nature of the problems that hinder their responsibilities.
Based on this idea, Lean suggests that the employee is the expert in their field. When improvement initiatives are carried out, the employee’s expertise fuels ideas and initiatives, while Lean structures these ideas and turns them into actions.
This is an excellent principle, but it can become misleading if it is taken for granted.
Indeed, if these conditions are fulfilled, you have the formula for success. However, there are times when the expertise is simply not in the room. This is a reality of professional life: sometimes the person performing the work daily is not the true expert.
This may happen for various reasons—lack of motivation, lack of competence, or poor professional fit. If you face such a situation during your implementation, additional effort will be required to ensure that the necessary expertise is present among your resources before combining it with the methodology.
2. The Lack of Leadership Involvement
The Toyota Production System (TPS), also known as Lean Management, attracts business leaders with promises of cost reduction, stronger organizational culture, increased production, and improved productivity.
However, behind these promises lies a subtle trap: leadership commitment.
This trap stems from the false belief that financial investment in training alone will generate results. In reality, leadership involvement is far more complex. It requires leaders to actively embrace the core principles of Lean Management before transmitting them to their teams.
Leaders must embody these principles daily, demonstrating how they work in practice.
The trap closes when leaders underestimate the effort required. They may believe that results will naturally emerge from their teams while they wait on the sidelines. Neglecting personal engagement while expecting rapid results is a fatal mistake.
Resting on one's laurels while waiting for end-of-year results rarely leads to transformation.
3. Tools First, Culture Later
The scientific and mathematical dimension of Six Sigma constitutes a major strength of the system. Numerous tools are available to facilitate daily problem-solving and quantify improvements.
However, one essential fact must be remembered: tools are the container, not the content.
In implementation efforts, organizations can quickly become fascinated by the complexity—or simplicity—of Lean tools and rush to apply them without understanding their underlying purpose.
For example, a Visual Information Center (VIC) makes performance visible on a daily basis, allowing teams to act upon it rather than passively endure it. It is also an excellent tool for strengthening team culture.
But if we do not take the time to train and sensitize the individuals who will use it daily, that board will represent little more than a decorative wall piece. At worst, it becomes the “initiative of the month.” At best, it becomes a procedural obligation.
4. Do as I Say, Not as I Do
One of my Lean coaches once told me a sentence that stayed with me forever:
“What you do speaks so loudly that I cannot hear what you say.”
When Lean is introduced to an unfamiliar audience, people often perceive its principles and employee-driven continuous improvement systems as somewhat utopian at first.
The worst possible combination is a skeptical audience and a non-exemplary ambassador. This only fuels their doubts.
If you truly want to implement Lean, the formula is simple:
Do not merely talk about it. Demonstrate it.
5. “We’ve Always Done It This Way”
“We’ve always done it this way.”
“That’s just how things work here.”
“It’s the procedure.”
The world is full of these phrases—phrases that are particularly frustrating for those of us committed to continuous improvement.
They are clichés, and they appear frequently. Yet they are not the most dangerous ones.
The real danger appears when someone who has been introduced to Lean concepts accepts these phrases without questioning them.
When we step into the pursuit of Operational Excellence, we must remember that the people around us will not necessarily share the same enthusiasm or perspective we gained when discovering the philosophy.
As a result, improvements and changes rarely occur as smoothly as we initially expect.
Human beings naturally resist change. They operate within habits and comfort zones. Coming to someone and demonstrating that the system they live within—one they perceive as complete and “perfect”—should be challenged will rarely be pleasant, for them and/or for you.
It requires courage to face resistance to change, and patience to avoid confrontation. Tact and diplomacy are essential if we want improvement without creating chaos.
