"It is widely assumed that workers whose labour market situation is insecure are likely to be individualistic, with negative attitudes towards trade unionism. This article uses Spain as a critical case to test the effects of labour market flexibility. Survey data reveal that, in fact, the attitudes of insecure workers towards trade unionism and mobilization at work are more positive than those of stable employees, and they are more critical of the prevailing economic system. These results are discussed within the framework of current debates on the crisis of trade unionism and the effects of flexibility in industrial relations."

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