What is the definition of organization restructuring?

Organization restructuring happens when the reporting hierarchy of a company changes. After organization restructuring certain groups will report to different departments, and some departments may be newly created or disappear altogether. If the org chart has changed shape then organization restructuring has occurred. There is no need for people to be hired or fired for a organization restructuring to happen, though organization restructuring is often a result of large layoffs. Often, organization restructuring is simply a euphemism for large-scale layoffs.