Changes in union density in the Nordic countries: a presentation

The aim is to explain: (1) Why union density (the share of employees affiliated to trade unions) is so high in the Nordic countries: 50-70%, in Iceland about 90%, (2) Why the rate of unionization (union density) varies between the Nordic countries, and (3) Why union density in the last 25-35 years has declined considerably in Denmark, Finland and Sweden, but not at all or only modestly in Iceland and Norway.