This report presents the results of the Dutch case studies carried out for the project 'networked coordination of industrial relations (NETWIR)'. This project aims to use social network analysis as a tool to gain insight in coordination of collective bargaining in four countries: the Netherlands, Italy, Ireland and Spain. It is set-up as an explorative study, as social network analysis has seldom been applied to study collective bargaining. Therefore, this report should be read as a presentation of results as well as an evaluation of the method of social network analysis to study this topic. We first provide background to the context of industrial relations in the Netherlands and to the means of coordination of industrial relations that have been common over the last decades (section 1.1) and information on a social network approach to coordination of collective bargaining (section 1.2) Next, we give an overview of the literature that applies social network analysis to industrial relations in the Netherlands or use it as an analytical concept (section 2). Thereafter, we discuss the methodology used and describe the process of data collection (section 3), before we move on to presenting our case studies. In section 4, we apply the methodology to two sector cases: the pharmaceutical industries (4.1) and the supermarket sector (4.2). Here we will also present some comparative information from the other three countries involved in the NETWIR project. In section 5 we compare the two cases and section 6 presents conclusions.