Global trends, highly competitive market and bad management are just some of the reasons which often leads companies into a business crises, in order to insure its survival and respond to challenging economic conditions, it is necessary to undertake corporate restructuring. The process of corporate restructuring begins with awareness of the crisis and identification of the causes. If reacted on time, measures in the context of strategic, financial, operational and market restructuring can help in the recovery of companies. Corporate restructuring processes are most often caused by financial problems, but in the case of successful business activity, the motive is to improve the business and maintain competitive advantage. Based on the research conducted on the example of a public company Croatian Post Inc., the conclusion is that corporate restructuring has proven successfully in solving the accumulated problems. The results of continuous implementation of restructuring are the transformation of a large inert system, which based its existence on a monopoly into a successful and modern company, which despite its strong competition in the postal industry, has become the market leader in Croatia.