The article tries to answer an old question of economic theory and institutional economics: How do trade unions fit into a market economy? Are they a constitutive element of the market order or: are they a source of irritation and disruption?

The article tries to answer an old question of economic theory and institutional economics: How do trade unions fit into a market economy? Are they a constitutive element of the market order or: are they a source of irritation and disruption?

The article tries to answer an old question of economic theory and institutional economics: How do trade unions fit into a market economy? Are they a constitutive element of the market order or: are they a source of irritation and disruption?

Gives a short outline of the main charac-teristics and emphasizes the actual signifi-cance of Walter Eucken's work. Summarizes the articles included in the journal.