Although there exists a large literature on the effects of trade unions upon wages, there is no published work that uses microeconomic data to examine the employment consequences of unionization. The paper addresses this issue with a new British data set and shows that, even after the addition...

Why do people join open-shop unions when they would receive union wage rates even if they were not members? Why are unionization rates so low in the south-east of England? To address these questions, which we treat as interrelated, the paper considers the idea that unions offer insurance against...