This paper describes and evaluates experiences of applying a business process perspective as a part of a change project in three different enterprises, especially with respect to improvements in production planning and information flow activities. The business process modelling gives a detailed and structured understanding of the relations between the business processes and the problems in the enterprise, problems that include quality and employee work conditions. The results indicate that the modelling of the processes provides the enterprises with more complete but simple and understandable images of the business, where the business process perspective accentuates a customer focus and a tight integration between production and sales. The perspective can be used to develop the understanding of the relations between the activities of strategic planning, the daily planning and scheduling of the production, and the personal planning of the single employee. The individuals’ working situation can be improved when the understanding of, and the possibilities to affect the own and others role in relation to the rest of the organisation are increased.