Company restructures like mergers or acquisitions are a tremendous opportunity for HR professionals to really shine. HR needs to be proactive in preparing for the restructure and should take the lead in gathering information from both companies (or more) and conducting a comparison study or a "cultural compatibility assessment." The results of that study are so significant that they can affect the price of the acquisition, set the course of the new company's trajectory, or even raise issues that cancel a merger or acquisition altogether.