Change management

Change management is the discipline of guiding individuals, teams, and organizations through a transition from a current state to a desired future state, with particular attention to the people side of change rather than just the technical or structural side.

Lewin’s three-stage model

One of the earliest and most durable frameworks comes from psychologist Kurt Lewin, who described organizational change in the 1940s as a three-stage process: unfreeze, change, and refreeze. Unfreezing involves preparing people to accept that change is necessary, often by disrupting a comfortable status quo. The change stage is the transition period itself, where new processes or structures are implemented. Refreezing stabilizes the organization in its new state so that the change does not simply erode back to old habits.

Kotter’s eight-step model

Decades later, Harvard Business School professor John Kotter proposed a more detailed eight-step model in his 1996 book Leading Change. The steps are: create a sense of urgency, build a guiding coalition, form a strategic vision, enlist a volunteer army to communicate that vision, remove barriers that enable action, generate short-term wins to build momentum, sustain acceleration by tackling bigger changes, and institute the change by embedding it into organizational culture.

Why change efforts fail

Both frameworks share an underlying premise: organizational change fails most often not because the new process or technology is flawed, but because people were not adequately prepared, communicated with, or given a reason to let go of old habits. Skipping the unfreezing or urgency-building stage, in particular, is one of the most commonly cited reasons change initiatives stall.

The ADKAR model

A more recent framework, ADKAR, developed by the consulting firm Prosci, breaks individual change into five sequential building blocks: awareness of the need for change, desire to support it, knowledge of how to change, ability to implement new skills and behaviors, and reinforcement to sustain the change over time. Unlike Lewin’s and Kotter’s models, which describe change primarily at the organizational level, ADKAR focuses on the individual employee as the basic unit that must successfully move through change for an organizational initiative to succeed overall.

Why people resist change

Resistance to organizational change is widely studied in its own right. Common drivers include fear of job loss or reduced status, lack of trust in leadership’s stated reasons for the change, insufficient information about what the change will actually involve, and simple habit, since established routines require less cognitive effort than new ones. Effective change management typically treats this resistance as a predictable, manageable part of the process rather than as a personal failing of the employees involved.

Change management versus project management

Change management is often distinguished from project management: project management focuses on delivering a defined scope of work on time and on budget, such as installing new software, while change management focuses on ensuring the people affected by that work actually adopt and sustain the new way of operating once it is delivered. A technically successful project can still fail to achieve its intended business benefit if the change management side is neglected and employees quietly revert to old habits.

Illustrative examples

Business case studies commonly cite companies that struggled to adapt their operating model even when the need for change was publicly recognized well in advance, such as photography and film companies slow to shift toward digital technology, and contrast them with companies in adjacent industries that restructured their business model proactively, such as video rental and streaming services, as illustrations of how organizational inertia, not merely strategic awareness, often determines which companies successfully navigate major industry shifts.

The role of communication

Nearly every change management framework places heavy emphasis on repeated, consistent communication from leadership throughout a change effort, not just at its announcement. Employees generally need to hear the rationale for a change multiple times, through multiple channels, and from multiple levels of leadership before they genuinely internalize it, which is why Kotter’s model explicitly calls for enlisting a broad coalition of messengers rather than relying on a single top-down announcement.

Sponsorship and leadership visibility

Change management practitioners also stress the importance of visible, active sponsorship from senior leaders, as opposed to leaders who formally approve a change but then disengage from its implementation. Prosci’s research, among others, has repeatedly identified active and visible executive sponsorship as one of the single strongest predictors of whether a change initiative ultimately succeeds, ranking it above factors such as the specific methodology used.

Organizations that treat change management as a formal discipline often assign a dedicated change manager or change management team to a major initiative, working alongside the project team responsible for the technical delivery itself.

That dedicated role is intended to ensure the people side of a transformation receives the same sustained attention as its technical scope, schedule, and budget.

Many organizations now also run structured feedback surveys at intervals throughout a change effort, rather than only at its conclusion, so that resistance or confusion can be identified and addressed while adjustments are still possible rather than after the initiative has already failed.

This feedback-driven approach reflects a broader shift in the field toward treating change management as an ongoing, adaptive process rather than a fixed sequence of steps applied identically to every initiative.

Most practitioners today treat Lewin, Kotter, and ADKAR as complementary lenses rather than competing choices, often drawing on all three at different points in a single large-scale transformation.

FAQs

What are Lewin’s three stages of change? Unfreeze, change, and refreeze.

What book introduced Kotter’s eight-step model? Leading Change, published by John Kotter in 1996.

Editorially reviewed by Specialty Digest Editorial TeamLast reviewed November 2, 2026Researched and drafted with AI assistanceReport an issue