The ways of organizing political problem solving in society are not static. A pluralistic dynamic society requires a continious reconsideration and adaption of its political in­stitutions, i.e. political institutionalization. Institutiona­lization demands prior organizing activities among actors for political aims. Organizing activities can be seen both inter­nally, externally or between existing organisations and in­stitutions . The degree of institutionalization reflects the organizing activities' survival capacity. The higher the degree of in­stitutionalization the more likely it is that the organizing activity will become a formally based organisation or institu­tion, or will change the dominating values of organisations or institutions. The degree of institutionalization is discussed using the concepts of adaptability, complexity, autonomy and flexibility. The thesis represents a problem-oriented implementation approach where individuals' joint ways of organizing problem- solving are the basis for analysis of both policy-realization and political institutionalization. Policy is defined as ideas and the ways of creating institutional arrangements in order to realize them. A "policy-problem", defined as the empirical question answered by examining the process of institutionali­zation, is used to study the policy-processes in the field of occupational safety and health. The ways in which individuals collectively organize in order to create a good working environment are studied using the concept of implementation structures. These are defined as phenomenological administrative units of analysis, i.e. groups of individuals empirically judged to take part in solving the policy problem. / digitalisering@umu