The recent financial crisis 2008-2014 and the likely crisis that will follow the Covid19 pandemic have shown the need to go beyond the traditional theories on labour market segmentation. In this article, we propose the theoretical model Multicategorial- Scale Dualization (DSM). Instead of conceiving the dualization as a binary combination of insiders/outsiders, the model here proposed explores different dimensions of marginalization along with a continuum of job positions. Stemming from a comparative analysis of Eurostat and OECD indicators, we analyse the dualization in four Southern European countries (Spain, Italy, Portugal and Greece). We then focus on the Italian case through an intersectional analysis, with the aim of showing the heuristic capacity of the DSM model for studying nonstandard work in the Southern European model.