%0 Generic %A Hernández Moreno, Jorge %A Cruz Martínez, Gibrán Alberto %T Dualization and welfare in the 21st century: a literature review and a proposal for a conceptual and explanatory framework %J Bath papers in social welfare, policy & society %D 2024 %@ 1369-9784 %U https://hdl.handle.net/20.500.14352/104866 %X This working paper analyses the nexus of the labour market and social protection system dualization in the 21st century, highlighting its institutional roots and societal implications. Our analysis, grounded in an extensive literature review, underscores the institutional structures and regulatory mechanisms that have historically stratified social protections and rights according to the form of employment, perpetuating inequality between insiders and outsiders of the social protection system. We aim to scrutinise the multifaceted dimensions of dualization processes. By adopting the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, our methodological approach ensures a thorough examination of dualization's extent within welfare states. Our findings reveal the complex dynamics favouring insiders (winners) at the expense of outsiders (losers), enlightening the differentiated access to welfare benefits and services. The working paper's significance lies in its contribution to understanding the institutional foundations of labour market dualization and its broader implications for social equity. Our analysis maps the evidence of dualization across various contexts and underscores the pivotal role of policy interventions in addressing the deep-rooted divides between insiders and outsiders. Consequently, this working paper offers valuable insights for policymakers, scholars, and practitioners aiming to foster more inclusive and equitable labour markets and social protection systems. %~