"This article aimed to explore the individual-level determinants of current and previous trade union memberships and to question if certain patterns are prevalent among European countries. Accordingly, repeated logit models across 15 European countries are applied drawing on the ninth round of the European Social Survey data. Variables are selected primarily considering the supply–demand theory, which explains the union membership based on the idea that employees are seeking to maximise the utility through cost and benefit analysis. In this context, this article offers a comprehensive analysis of the determinants of trade union membership with findings suggesting that personal, occupational and workplace characteristics affect current membership while occupational and workplace characteristics have effects with inverse directions on current membership and previous membership."

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