The Harris-Todaro hypothesis and the Heckscher-Ohlin-Samuelson trade model : A synthesis

We report a model of the Harris-Todaro variety in which capital is mobile and the urban wage is endogenous. Our model subsumes several other models presented in the literature. We extend the central theorems of trade to our model and also present formulae for the shadow wage and shadow rental. Our principal findings include (a) nonexistence of equilibrium in an important specialization of the model; (b) a factor-price and unemployment rate equalization theorem: and (c) an identical subsidy to labor but a differential subsidy to capital for obtaining a second-best optimum.