Union Membership and Age: The Inverted U-Shape Hypothesis under Test
In this note we cast some doubt on the claim put forward by David Blanchflower (2007) that the probability of being unionized follows an inverted U-shaped pattern in age with a maximum in the mid- to late 40s. By using a special test for an inverted U-shaped pattern that has not been applied to the age-membership nexus before, and by constructing exact confidence intervals for the maximum value, we demonstrate that at least for West Germany Blanchflower's hypothesis does not hold. Our findings suggest that more definitive evidence is needed before the existence of international unionization-age patterns can be taken for granted.
|Date of creation:||Nov 2008|
|Date of revision:|
|Publication status:||published as 'With or Without U? Testing the Hypothesis of an Inverted U-Shaped Union Membership-Age Relationship' in: Contemporary Economics, 2012, 6 (4), 28-34|
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- David G. Blanchflower, 2007. "International Patterns of Union Membership," British Journal of Industrial Relations, London School of Economics, vol. 45(1), pages 1-28, 03.
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