URL des Documents de travail : http://centredeconomiesorbonne.univ-paris1.fr/bandeau-haut/documents-de-travail/Documents de travail du Centre d'Economie de la Sorbonne 2012.90 - ISSN : 1955-611X - Version réviséeThe funding of social protection has strongly evolved in Bismarckian countries : whereas social protection used to rely on social contributions, since the 1990s most of the new expenditures have been funded through taxation, leading to a more balanced mix in the structure of social protection revenue. I propose a formal model in which two social protection systems may coexist: insurance and assistance. Insurance level is set by consensus between firms and unions, whereas assistance expenditures are set by a majority vote in parliame...