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Lean Leadership and the Broken Windows of Culture

Avatar photo By John Knotts Updated on June 4th, 2026

Over the years, I have spent a great deal of time researching leadership accountability, organizational culture, and the causes of toxic leadership. Along the way, I encountered a concept known as the Broken Windows Theory. While the theory was originally developed to explain crime and disorder in neighborhoods, I believe it offers valuable insight into why some organizations thrive while others struggle, and why some Lean transformations succeed while others fail.

The basic premise of the Broken Windows Theory is simple. A broken window left unrepaired sends a signal. It communicates that nobody in that neighborhood cares, that standards are not important, and that disorder is acceptable. As more broken windows appear, people begin adjusting their behavior to match the environment around them.

What struck me is that the same thing happens inside organizations.

Every company has broken windows.

A broken window may be a safety violation that goes unaddressed. It may be a missed commitment, a disrespectful comment in a meeting, a quality defect knowingly shipped to a customer, or a standard operating procedure that everyone ignores. While each incident may seem small on its own, together they send powerful signals about what is truly acceptable within the organization.

Many leaders focus on fixing the broken windows. They clean up the work area, revise the procedure, update the metric board, or launch another improvement initiative. While those actions may be necessary, I believe they miss the deeper issue.

The problem is not the broken window.

The problem is what happens when someone breaks it.

What Leaders Tolerate Becomes the Culture

One of the most important lessons I have learned in studying toxic leadership and toxic work environments is that culture is not defined by what leaders say. It is defined by what leaders tolerate.

Organizations often have values statements that include words such as Respect, Integrity, Accountability, and Teamwork. Yet employees quickly learn whether those values are real by observing how leaders respond when someone violates them.

When a manager publicly humiliates an employee and nothing happens, a signal is sent.

When a high performer repeatedly violates company values but continues to be rewarded, a signal is sent.

When leaders fail to follow through on commitments without consequence, a signal is sent.

Employees notice these things far more than they notice posters on the wall. Over time, people stop paying attention to the stated culture and begin responding to the actual culture. The tolerated behaviors become the organization’s true values.

This is where accountability becomes critical.

Not punishment.

Accountability.

There is a significant difference.

Punishment focuses on consequences. Accountability focuses on standards. It communicates that the organization has agreed upon a set of expectations and that those expectations matter. Without accountability, standards become suggestions.

Lean Is Not Just About Fixing Problems

One of the greatest misconceptions about Lean is that it is primarily about eliminating waste, improving flow, and implementing tools. While those outcomes are important, they are not the foundation.

The foundation of Lean is leadership.

A Lean organization creates clear expectations, develops people to meet those expectations, and consistently reinforces them through accountability.

Think about some of the most common Lean practices:

Many people view these as operational tools. I view them as leadership systems. Their purpose is not to catch people doing something wrong. Their purpose is to make abnormalities visible before they become normal.

Every time a leader reviews a visual board, conducts a Gemba walk, follows Leader Standard Work, or responds to an employee concern, they are sending signals about what matters. Every interaction either strengthens or weakens the culture.

The Missing Piece: Capability

As I explored the Broken Windows Theory further, I realized there is another dimension that applies to leadership.

We often assume people know how to behave in a high-performing culture. Many do not.

Imagine a neighborhood where people regularly break windows. One response is to increase accountability. Another question worth asking is, “Why are people breaking windows in the first place?”

  • Do they understand the expectations?
  • Do they have positive ways to gain recognition?
  • Do they possess the skills necessary to contribute productively?

Organizations face the same challenge.

Leaders often expect accountability, problem-solving, teamwork, and continuous improvement without ever teaching people how to do those things. Employees are told to solve problems, but are never trained in root cause analysis. Supervisors are expected to coach employees, but have never learned coaching skills. Managers are expected to build trust, but have never developed emotional intelligence or conflict resolution capabilities.

In these situations, people often fall back on the only tools they possess.

In Gemba Academy, we recognize that Lean Six Sigma Black Belts are often required to coach and train others in the field. Thus, as part of the LSS Black Belt and Master Black Belt certification programs, we provide training on coaching and training. Our certification candidates walk away with a repeatable coaching model that works perfectly in continuous improvement environments.

This does not excuse poor behavior, but it frequently explains it.

A mature Lean culture requires more than standards and accountability. It requires capability.

The Three Responsibilities of Lean Leadership

As I reflect on both Lean leadership, Gemba Academy’s newest certification program, and my research into toxic leadership, I have come to believe that leaders have three fundamental responsibilities.

  1. They must establish clear expectations. People need to know what good looks like.
  2. They must develop capability. People need the knowledge, skills, and tools necessary to succeed.
  3. They must maintain accountability. People must understand that standards matter and that violations will be addressed consistently and fairly.

When any one of these three elements is missing, culture begins to deteriorate.

  • Without expectations, there is confusion.
  • Without capability, there is frustration.
  • Without accountability, there is normalization of poor behavior.

Building Lean Cultures One Signal at a Time

The most successful Lean organizations are not successful because they have fewer problems. They are successful because they respond differently to problems. They recognize that every leadership action sends a signal: every ignored defect, broken commitment, and unaddressed toxic behavior sends a signal.

Likewise, every coaching conversation sends a signal. Every solved problem sends a signal. Every leader who follows through sends a signal.

Culture is not built through slogans, posters, or annual meetings. Culture is built through thousands of daily signals that teach people what is expected, what is valued, and what will be tolerated.

The next time you walk through your organization, look for the broken windows. But don’t stop there. Ask yourself a more important question:

What signals are we sending when those windows get broken?

The answer may tell you more about your culture than any employee survey ever could.


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