The principal objective of this thesis is to present, in theoretical, cognitive and practical terms, the issues related to product flexibility of a manufacturing plant. The intention of the authors remains conducting literature enquiry with regard to the paradigm of a flexible manufacturing plant, determination of the relation of resources and flexibility of a manufacturing plant, referring the resource-based model of a flexible manufacturing plant to the business practice. When conducting an analysis of the specific nature of the resource-based model of the flexibility management system, by presenting the main conditions having impact on it, the authors will suggest recommendations in this respect. For practitioners of management they might be the basis for diagnosis and an inspiration for preparing the strategy of its implementation.