Over the past 50 years, the U.S. and several European labor markets have undergone two most incisive developments: job market polarization and deunionization. In this paper, we argue that routine-biased technical change is not only the driving force behind polarization, as prevalently assumed,...

Trade unions distort a profit-maximising firm's input choice. The nature of the resulting inefficiency depends on whether there is wage or efficient bargaining. Moreover, trade unions redistribute income and thereby affect welfare. If firms also pursue Corporate Social Responsibility (CSR)...