This paper investigates how poverty reduction and natural resource preservation can be simultaneously achieved in a small open dual economy with urban wage rigidity, open access rural resources, and rural-urban migration. An increase in the export tax rate on the rural resource good increases urban unemployment in both the short run and the long run with resource dynamics. Given the institutional failures, the first-best policy is an urban wage subsidy combined with either a rural wage subsidy at a lower rate or, if the urban output price is sufficiently high, a rural tax. When the institutional failures can be resolved endogenously, an increase in the export tax on the resource good can induce rural institutional change away from open access. However, tariff protection of urban manufacturing hinders such a rural institutional change.
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