Expectations are running high for significant outcomes on the temporary movement of natural persons to supply services - known as mode 4 - in the current WTO services negotiations. Powerful drivers for liberalisation exist, such as increased trade and investment, strengthened global business...

This paper revisits barriers to exit, explores their different definitions in the literature and identifies what these have in common. It then analyses the different ways in which such barriers to exit can affect allocative efficiency and competition while assessing their impacts by looking at...