There are, however, some disadvantages to the change management methodology that has more to do with not properly following its processes. If resistance from employees is not effectively dealt with through communication, it can derail any project.
Not understanding the culture of your company can allow the rumor mill leaders to circulate incorrect or corrupting information about the change. Also, stakeholders and customers need to be kept informed and brought in on the change. If not, they make also resist the change, and clients may choose to go through another company.
A bad change management plan can also negatively affect an organization. Change management is just that managing change. And, without a plan to deal with every step of the change (before, during and after), the strategy could fail at any point in time, possibly bringing down the entire company.
While change can be risky, the benefits far outweigh the potential pitfalls. Change allows organizations to progress and stay on top of their industry in an uncertain market.
To learn more about change management approaches, read Approaches to Change Management.