In their four-stage model, Hayes and Wheelwright (1984) categorize several types of organizations based upon their frame of mind towards their very own operations. The four level model is underpinned by way of a belief that an organization's operations can provide a source of competitive advantage. It might only do this if the operations function is usually managed logically. A stage 1 firm finds it impossible to manage the operations intentionally, as its procedures performance goals are constantly changing among low cost, elevated flexibility, increased quality, etc . Because businesses managers do not have the time to concentrate on a consistent pair of objectives, a stage you organization is usually characterized by a reactive method of operations supervision.