Trade Adjustment Assistance and Pareto Gains From Trade

In a model where all factors of production are imperfectly mobile, we argue that the Dixit-Norman scheme of commodity taxes may not lead to strict Pareto gains from trade. Rather, this scheme must be augmented by policies which give factors an incentive to move: hence, the role for trade adjustment assistance (TAA). We demonstrate that by knowledge of the distribution of adjustment costs across individuals, the government can offer a single TAA subsidy to all individuals willing to move between industries, and maintain a non-negative budget. The TAA subsidy, combined with the Dixit-Norman pattern of commodity taxes, can lead to Pareto gains from trade under the conditions we identify.