How much time may be required to institutionalize a change? Examples. AT LEAST 8-10 SENTENCES. LINKS ATTACHED BELOW. AN EXAMPLE... Major change initiatives can take five to ten years to go through all the phases that are involved and truly sink into the organizational culture of the company. Every phase of the change process is time-consuming but crucial to the success of the process. Successful transformation efforts are the result of planning and patience throughout each step of the way to ensure there are not any mistakes that can cause a backslide in the process.