 Wolff retired in 2008 but remains professor emeritus and that year joined The New School as a visiting professor.The first co-authored academic publication by Wolff and Resnick was "The Theory of Transitional Conjunctures and the Transition from Feudalism to Capitalism," which laid out the pillars of the framework that they have worked on ever since.They formulated a non-determinist, class-analytical approach for understanding the debates regarding the transition from feudalism to capitalism.