Introduction
Welcome to the first lesson of your course on leading large-scale transformation. Your goal is to design and implement a major change program within a B2B software company, and to do that effectively, we need to start with the foundational concepts that underpin the entire field of change management.
This first module focuses on three seminal models: Lewin's, Kotter's, and ADKAR. While you've noted an interest in modern, adaptive approaches—which we will cover in depth later—understanding these classic frameworks is essential. They provide the core vocabulary and a fundamental understanding of the human and organizational dynamics at play during any change, no matter how complex.
In this lesson, we will begin with the model that started it all: Kurt Lewin's three-stage model of change. By the end of our session, you'll be able to describe its three stages—Unfreeze, Change, and Refreeze—and understand its underlying principles. This will form the bedrock for the more detailed models we'll explore next.
What is Lewin's Change Model?
Developed in the 1940s by psychologist Kurt Lewin, this model presents organizational change as a three-step process. Its enduring power lies in its simplicity. It provides a high-level mental map for thinking about how to move an organization, team, or group from a current state to a desired future state.
The central metaphor used to describe the model is that of changing the shape of an ice cube.
To get a quick overview of the model and this analogy, please watch the first few minutes of the following video.
Unfreeze, Change, Refreeze | Kurt Lewin's 3-Step Model
This video from EPM provides a concise introduction to Lewin's model and the famous ice cube analogy that makes it so intuitive.
Please watch from the beginning to the 02:13 mark. Focus on how the analogy of changing an ice cube's shape maps to preparing for, implementing, and solidifying organizational change.
As the video explains, you can't just force a new shape; you must first create the conditions for change (unfreezing), make the change itself, and then ensure the new state stabilizes (refreezing).
The Engine of Change: Force Field Analysis
Before we break down each stage, it's crucial to understand the theory that powers Lewin's model: Force Field Analysis. Lewin proposed that any situation or group behavior is held in a state of equilibrium by a balance of two opposing sets of forces:
- Driving Forces: These are forces pushing for change. They can be internal (e.g., a desire for greater efficiency, new leadership) or external (e.g., new technology, competitor actions, market shifts).
- Restraining Forces: These are forces resisting change and pushing to maintain the status quo. They often manifest as employee resistance, fear of the unknown, organizational inertia, or existing investments in legacy systems.
Change occurs when the driving forces become stronger than the restraining forces, thus upsetting the equilibrium. Successful change management, therefore, isn't just about pushing harder; it's about strategically strengthening the drivers while simultaneously weakening the restrainers.
To learn more about this foundational concept, please watch this short video from Practical Psychology.
Lewin’s Change Theory - UnFreeze, Change, ReFreeze Method
This video introduces the core concepts of driving and resisting forces, which are essential for understanding why Lewin's model is structured the way it is.
Watch from the start to 01:07, and then from 02:05 to 03:42. Focus on the definitions of driving and restraining forces and the three ways to initiate change by manipulating these forces.
The Three Stages in Detail
With the concept of Force Field Analysis in mind, let's examine each of Lewin's three stages more closely. For a detailed textual breakdown, the following resource from Think Insights is excellent.
Lewin's Change Management Model
This article, 'Lewin's Change Management Model,' provides a comprehensive look at each stage, linking them back to the principles of Force Field Analysis.
Please read the sections titled 'Unfreezing,' 'Change,' and 'Refreeze.' As you read, note the practical actions suggested for leaders within each stage.
Let's synthesize the key activities of each stage.
Stage 1: Unfreeze
The goal of this stage is to create motivation and readiness for change by demonstrating that the existing way of doing things—the status quo—is no longer viable. It's about melting resistance and preparing the ground.
Key activities include:
- Creating a compelling case for change: Use data (e.g., declining sales, poor customer satisfaction, competitor performance) to create a sense of urgency. You need to answer the question, "Why change, and why now?"
- Communicating the vision: Clearly articulate what the future state will look like and how it benefits the organization and its people.
- Addressing doubts and concerns: Acknowledge the uncertainty and anxiety that change creates. This involves listening to stakeholders and building psychological safety.
- Strengthening driving forces and weakening restraining forces: This is Force Field Analysis in action. For example, highlight the market opportunities a new technology opens up (driving force) while providing training and support to reduce fear of incompetence (restraining force).
Stage 2: Change (or "Transition")
This is the implementation stage, where the organization moves toward the desired future state. It's often a period of confusion and uncertainty as old habits are left behind and new ones are not yet fully formed.
Key activities include:
- Continuous communication: Keep everyone informed about what's happening, why, and what's next. A communication vacuum will be filled with rumors and anxiety.
- Providing strong leadership and support: Leaders must model the new behaviors and provide the resources, training, and time that people need to adapt.
- Involving people in the process: Empower employees to co-create solutions and take ownership of the change. This builds commitment and reduces resistance.
- Celebrating short-term wins: Acknowledge and reward progress along the way to build momentum and reinforce that the change is positive and achievable.
Stage 3: Refreeze
The final stage is about stabilizing the organization in its new state and ensuring that the changes stick. Without this stage, people naturally revert to old, familiar ways of working. Your experience in Learning & Development is particularly relevant here, as this stage is about embedding new behaviors.
Key activities include:
- Integrating changes into the culture: The new ways of working must become "the way we do things around here."
- Updating organizational systems: Align performance management, rewards, recruitment, and onboarding processes with the new reality to reinforce the change.
- Providing ongoing training and support: Ensure that both new and existing employees have the skills and knowledge to succeed in the new environment.
- Celebrating the final success: Formally recognize the effort and achievement to provide closure and anchor the change.
A Modern Critique
A common criticism of this model, especially in today's fast-paced tech world, is that the "Refreeze" stage seems outdated. In an environment of continuous improvement and agile development, do we ever truly "freeze"? This is a valid point and one that speaks to your interest in "Change Agility."
While the term "refreeze" may suggest a rigid finality, you can also interpret it as "anchoring" or "embedding" a change until the next one is needed. Even agile organizations need periods of relative stability to consolidate gains before initiating the next transformation cycle. The Google SRE workbook you'll glance at below acknowledges this, framing Lewin's model as useful for planning change at a "macro level," even within a constantly evolving tech organization.
Change Management for IT Transformation - Google SRE
This short excerpt from Google's SRE Workbook shows how a foundational model like Lewin's is still viewed as relevant for framing change in a high-tech environment.
Read the paragraph under the heading 'Lewin’s Three-Stage Model.' Notice how it positions the model as a tool for managing group dynamics and planning at a high level.
Application Exercise
Let's connect this theory to your goal. Imagine your company is planning the transformation you described: a strategic shift from a monolithic software product to a microservices architecture.
Based on what you've just learned about Lewin's model, take a moment to reflect and jot down your initial thoughts on the following questions:
- Unfreeze: What are 2-3 key actions you would take to "unfreeze" the organization? Think about the engineering, product, and sales teams. What driving forces would you emphasize, and what restraining forces would you anticipate?
- Change: During the transition, what kind of support or communication would be most critical for the engineering teams who have to learn new skills and development patterns?
- Refreeze: Once the first few services are successfully launched, how would you "refreeze" this new way of working? What specific organizational systems (e.g., code review processes, team structures, performance metrics) might need to change to prevent teams from reverting to monolithic thinking?
This exercise is for your own reflection, helping you translate the abstract model into the concrete challenges of a B2B software transformation.
Conclusion
In this lesson, we have introduced the first foundational framework for managing organizational change.
Key Takeaways:
- Lewin's Model provides a simple, three-stage process for change: Unfreeze, Change, Refreeze.
- Unfreezing is about preparing for change by overcoming inertia and dismantling the existing mindset.
- Changing is the transition period where new ways of working are introduced and supported.
- Refreezing is about stabilizing the change and embedding it into the organization's culture and processes to make it the new norm.
- The model is underpinned by Force Field Analysis, which conceptualizes change as a battle between driving forces (promoting change) and restraining forces (resisting it).
While simple, Lewin's model provides a powerful mental checklist: Have I prepared people for this change? Am I supporting them through the transition? And have I done what's necessary to make it stick?
Preview of the Next Lesson:
In our next session, we will build directly on these concepts by exploring John Kotter's 8-Step Process for Leading Change. Kotter's model essentially expands on Lewin's three stages, offering a more detailed, action-oriented roadmap that is highly practical for leaders and change managers.