One of the most relevant manifestations of precarious work is the dualization of the labour market, which involves a sharp difference between the unprotected workers who have a high risk of being unemployed and the protected workers who do not. As a result, it is plausible to think that there is some conflict of interest between groups of workers. Nonetheless, I argue that an adequate political theory must account for whether there are underlying affinities and capacity for collective action between (...) the two groups. To explore this possibility, I first present the republican conception of the common good and then the labour model derived from it. Finally, I explain that, even in their current situation, these groups of workers still maintain deep shared interests. (shrink)