This is a study of inter-organizational relations, especially of control relations, applied to Swedish state enterprise.The growing interdependence between different parts of society as well as the dynamic environment of organizations bring forward a need for new patterns of interaction. Organizations of very dissimilar types have to cooperate in new areas. The state enterprises have an external environment that exhibit both political and economic characteristics. The control relation, to the owner, may involve both types.The study consists of three parts. Part one present an initial theoretical framework, used in an empirical study (part two). This shows the need for a further development. A revised and enlarged framework is presented in part three. In the initial framework the concept of control, within a systems approach, was the focus of investigation. The approach was traditional and pointed to the importance of structures and of characteristics of the decision process. Control of two levels was discussed — organizational control and control of specific situation. The model suggested was mainly developed for description of control of state enterprises.The empirical study was conducted as an interview study in nine state enterprises. The interviews were of a semi-structured type and the purpose was to gain new insights as to the conditions of control of organizations. The enterprises were selected according to mission, three types were identified: strictly political tasks, strictly economic tasks and a mixture of tasks. The findings were that organizational control differed according to task so that political task gives a more strict control: The differences in control of ongoing avtivity was less pronounced. The most striking finding was the relevance of expectations of control. The empirical study led to demands for a more actor-oriented approach.This was the starting point for the revised and enlarged framework. A review of studies of relations in the systems approach and within a more actor-oriented approach was made. The role of the actor in the organization is discussed. The importance of structural conditions and of process in control is also analyzed. This review and analysis forms the basis for a somewhat different approach to relations. A concept of complexity is developed. This concept involve the total variation in a situation. Complexity is a main factor in perceptions of uncertainty < Coping with uncertainty gives power, which is the prerequisite of control.These concepts are used to form a game approach to control. Control is considered as the result of a game of power. Two types of games are presented — for organizations as a whole and for situations of a deviant character. In both types actors and processes are of prime interest. / digitalisering@umu