"This paper considers the extent to which union decline in Britain has been characterized by convergence or divergence in union membership rates for people with different personal and job characteristics. It compares individual union membership in 1975 and 2001 to identify some significant factors of convergence and divergence, which indicate temporal instability in the relationship between union membership and a number of its determinants. Identification of these factors of convergence and divergence should be useful to several parties, including industrial relations scholars and union organizers."

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