Lewin's Change Model: What It Is and How It Works

What is Lewin’s change model

Lewin’s change model is a three-stage framework that describes how an organization moves from an established way of working to a new one: unfreeze, change, refreeze. Lewin arrives at these ideas as part of broader research into group dynamics, the same line of work that produced his concept of psychological field. The angle here is different: not the psychology of groups, but how that model gets used to design organizational change management.

The three stages, one by one

A widely used explanation in management training, from MindTools, compares the process to a block of ice: it first has to melt so it can be reshaped (unfreeze), then be molded into the form that is needed (change), and finally solidify again (refreeze). It is a useful image because it makes the trickiest part of the model visible: skip the last stage, and the new shape risks melting again as soon as the push for change lets up.

A real case: the Nissan restructuring

Practical example: during the restructuring of Nissan Motor Company under Carlos Ghosn, the three stages of the model show up clearly. In the unfreeze stage, Ghosn tells employees how serious the company’s financial crisis is and sets up cross-functional teams tasked with proposing solutions. In the change stage, Nissan restructures its operations, closes plants and cuts costs, while leadership communicates progress and involves staff. In the refreeze stage, Ghosn introduces performance-based pay and open feedback systems, to make the new culture stick instead of letting it fade over time.

“Refreezing” is not Lewin’s word

One detail worth knowing before treating the model as something Lewin wrote word for word: in his 1947 article, the subtitle refers to “unfreezing, moving and freezing” group standards, not “refreezing.” The word “refreezing” only appeared in 1950, in a conference paper by Leon Festinger, a former student of his, who also changed “moving” to “stabilizing.” According to a 2016 historical account (Cummings, Bridgman and Brown, cited here through a blog that reports its findings, since the original academic paper could not be accessed directly), the three-stage version now attributed to Lewin was little known before the early 1980s and only became the field’s standard in that decade. That is not a reason to dismiss the model, but it is a good reason to attribute it carefully: it is more accurate to call it a model “associated with Lewin” or “credited to Lewin” than a formula Lewin himself put on paper.

Criticism and limits of the model

Several independent industry sources converge on the same limits. Prosci and BMC both flag the model’s linear, sequential nature: it describes a fixed three-stop path, while many organizations deal with ongoing, overlapping change that does not fit neatly into a framework ending in a “freeze.” Prosci adds that the model offers high-level guidance without detailed operational tools for managing complex or large-scale transformations. Management Study Guide lists further limits: the model assumes incremental change and struggles with radical transformation, and it does not account for power dynamics and competing interests inside an organization.

Applying the model in practice

In practice, the model still earns its keep mainly as a frame for ordering the questions of a reorganization: the need for change gets communicated, the change itself gets introduced, and then it gets made to last. That logic applies as much to an internal reorganization as to broader shifts in the labor market, where companies and workers adjust together to new ways of working. One sign that the unfreeze stage was not done well, for instance, is employees growing disengaged from an announced change — a pattern often described with the label quiet quitting, doing the bare minimum instead of buying into a change that was never clearly communicated. The criticism above is still worth keeping in mind: Lewin’s change model offers a basic logic, not a ready-made plan for an organization’s specific context.