This paper indicates that the extent of collective bargaining coverage in an industry may depend on the differences in firms productivity levels within the industry. Less pronounced differences in productivity levels make it easier to design collective wage contracts that are accepted by a wider...

A large number of articles have analysed ‘the one constant´ in the economic effects of trade unions, namely that union bargaining reduces employment growth by two to four percentage points per year. Evidence is, however, mostly related to Anglo-Saxon countries. We investigate whether a...