Summary The successful transition of Eastern European economies from central planning to market orientation has to include significant company restructuring in addition to privatization. At the micro level it can bring enhanced productive efficiency through changes in organizational structure, operations and financial control and the introduction of marketing as a crucial element and function of the restructured companies. At the macro level, company restructuring creates the necessary conditions for improved allocative efficiency, achieved through the transition from the monopolistic market structure of chronic deficit to a mostly competitive one able, in the longer run, to meet market demand. Restructuring is used here in the broader sense of changes in the organization's management orientation, operational processes and systems as well as in its formal structure. Restructuring is held to be both extremely complex and critical to the realization of the benefits of privatization at both macro and micro levels. Some broad hypotheses relating to common elements of the restructuring process arc introduced: a shift to a flatter, less hierarchical organization structure; the adoption of ‘western’ financial management and accounting practices and the introduction of budgetary accountability; the evolution of the marketing function and the rationalization of product ranges in the light of market needs.