This article presents a novel framework for analysing the politics of eco-social policies, focusing on the political conflicts surrounding this third generation of social risks. We distinguish two key dimensions of conflict: an ideational approach dimension, which focuses on conflicts among political actors over the possible synergies and trade-offs between social and ecological goals and their potential integration through eco-social policies, and a design dimension with several sub-dimensions related to the formulation and implementation of eco-social policies. To illustrate the merit of this analytical framework, we apply it to the analysis of party manifestos for the 2021 German federal election. Our findings reveal a striking divergence in the first dimension: While most parties emphasise the synergy potential of eco-social policies, albeit to varying degrees, the far-right Alternative for Germany (AfD) stands out by opposing this narrative. The second dimension largely reflects established welfare positions, with centre-left and left-wing parties advocating state involvement and social consumption (the Social Democratic Party of Germany [SPD], the Greens, and The Left) and selective/needs-oriented measures (SPD and The Left) to a greater extent than centre-right parties (Christian Democratic Union of Germany [CDU]/Christian Social Union in Bavaria [CSU] and Free Democratic Party [FDP]). Furthermore, pro-growth approaches dominate, but there are signs that positions on degrowth policies may emerge as a significant conflict line in the future. Our analysis shows that eco-social policy conflicts are multidimensional, partly reshaping the political landscape around welfare policies, and are about not only how eco-social policies should be designed but whether they can and should be pursued at all.