Trade Liberalization, Local Air Pollution, and Public Health in Tunisia: Assessing the Ancillary Health Benefits of Pollution Abatement Policy

Mohamed Chemingui () and Chokri Thabet
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Mohamed Chemingui: United Nations Economic Commission for Africa

No 612, Working Papers from Economic Research Forum

Abstract: Since the middle of the last century, Tunisia is embarked in an ambitious trade reform program aiming to improve its integration in the world economy, boost growth through valorizing comparative advantages, and reducing unemployment among its population. However, and despite the positive role that trade may play in improving growth through better allocation of domestic resources and lower costs of imported equipments and raw materials, the risk is to amplify output in sectors intensive in energy in a country where energy is still subsidized. Introducing a pollution abatement tax has been suggested as a way to achieve ancillary benefits from reduced local air toxicity. The highest level of local air pollution is found in heavily populated cities where labor is concentrated and where labor health is believed to have been significantly impacted. The objective of this paper is to address this important issue. It identifies the optimal and “no regrets” pollution abatement tax on a net welfare function, which integrates both net health benefits and adjustment costs. The paper uses a Computable General Equilibrium (CGE) model for the assessment that allows the health benefits to feedback into the economy. A health effects sub-model takes the local air emissions output from the CGE model and assesses the implications for ambient air concentration levels and health effects. The results suggest an “optimal” abatement rate in 2020 of around 25% of CO2 reduction compared with the baseline 2020 emissions. However, the most significant impact concerns the relatively small aggregate cost of pollution abatement in terms of forgone real average growth rate of GDP between 2010 and 2020 for the trade scenario with “optimal” climate policy. Finally, the major consequence of pollution abatement policies is the reduction of production generated by polluting activities against a higher production of less polluting activities.

Pages: 37
Date: 2011-01-08, Revised 2011-01-08
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