Lewin's Three-Stage Change Model

1. Unfreeze. The current way of working is held in place by forces that balance each other. Before anything moves, that balance has to be disturbed: people need to see that the present state is no longer adequate, and the forces holding it in place need to weaken.
2. Change (moving). The group moves to a new level of behavior: new routines, new standards, new structures. Lewin called this stage moving.
3. Refreeze. The new level is stabilized so it does not drift back. Procedures, measures, norms and incentives are aligned with the new behavior.

Lewin's own phrasing spoke of unfreezing the present level, moving to the new level, and freezing group life there. The term "refreezing" became standard through later writers.

Lewin's three-stage change model therefore describes change as a move from one stable state to another, with effort needed at both ends.

Kurt Lewin was a social psychologist who founded the study of group dynamics and developed field theory and action research. In "Frontiers in Group Dynamics" (1947), published shortly after his death, he described social situations as quasi-stationary equilibria held in place by opposing forces, the idea behind Force Field Analysis. The three steps appear in that work as a short passage on how such equilibria can be shifted.

The attribution is debated. Cummings, Bridgman and Brown (2016) argue that Lewin wrote only a few lines on the three steps and that the tidy "unfreeze, change, refreeze" model was largely constructed after his death, notably in management textbooks. Burnes (2020) replies that the three-step idea was a real and integral part of Lewin's planned approach, linked to field theory, group dynamics and action research.

Both sides agree that Lewin's wider work is richer than the three-box diagram suggests.

Lewin's three-stage change model is therefore best credited to Lewin with care: the idea is his, while the popular packaging owes much to later writers.

Larchfield Logistics is replacing paper delivery notes with proof of delivery on handheld devices.

• Unfreeze: depot managers share data on disputed deliveries and the time drivers lose chasing signatures. Drivers are involved in choosing the device and testing the screens, which weakens the fear that the change is about surveillance.
• Change: one depot pilots the devices, drivers get hands-on training, and a support line runs during the first weeks. Feedback leads to two screen changes before the wider rollout.
• Refreeze: the paper forms are withdrawn, the depot procedure is rewritten, proof-of-delivery completion becomes a weekly team measure, and new drivers learn only the handheld process.

Refreezing here means stable enough to rely on, not fixed forever: Larchfield expects further changes to the devices.

Applied this way, Lewin's three-stage change model reminds a team that a change needs preparing before it starts and anchoring after it lands.

The model is most useful when a change has a clear before and after: a new system, a restructure, a relocation, a new policy. It gives sponsors and teams a simple shared language and reminds them that preparation and stabilization are part of the work, not extras.

It also works as a frame for more detailed models. Kotter's eight steps can be read as a fuller version of the same arc, and Force Field Analysis gives the unfreezing stage a practical tool.

It is less useful when change is continuous or emergent, for example in an organization that adjusts its services every few weeks. There, "refreezing" can be misread as a call to lock things down.

Lewin's three-stage change model is therefore a framing device for discrete changes rather than a detailed method.

The model's strengths are its simplicity and its insight that a stable state must be disturbed before it can move.

Burnes (2004) summarizes the main criticisms made of Lewin's planned approach, and argues that several of them misread Lewin:

• It assumes stable states. Many organizations face continuous change, so a frozen end state is unrealistic.
• It suits incremental change. Critics see it as less helpful for large, fast transformation.
• It ignores power and politics. Conflict between interest groups is not addressed.
• It is top-down. It can be read as management deciding and employees being moved.

To these, the attribution debate adds a further limit: the three-step diagram is a simplification, and some of what is criticized may belong to later interpretations rather than to Lewin.

The model also says little about individual experience, which is why it is often paired with Bridges' transition model.

Lewin's three-stage change model is therefore a useful starting frame, best combined with tools for diagnosis, leadership and individual support.