The costs of climate policies in a second-best world with labour market imperfections

Céline Guivarch, Renaud Crassous, Olivier Sassi and Stephane Hallegatte

Climate Policy, 2011, vol. 11, issue 1, 768-788

Abstract: This article explores the critical role of labour market imperfections in climate stabilization cost formation, using a dynamic recursive energy-economy model that represents a second-best world with market imperfections and short-run adjustment constraints along a long-term growth path. The degree of rigidity of the labour markets is a central parameter, and a systematic sensitivity analysis of the model results confirms this. When labour markets are represented as highly flexible, the model results are in the usual range of the existing literature; that is, less than 2% GDP losses in 2030 for a stabilization target at 550 ppm CO 2 equivalent. However, when labour market rigidities are accounted for, mitigation costs increase dramatically. Accompanying measures are identified, namely labour subsidies, which guarantee against the risk of large stabilization costs in the case of high rigidities of the labour markets. This complements the usual view that mitigation is a long-term matter that depends on technology, innovation, investment and behavioural change. The results support the view that mitigation is also a shorter-term issue and a matter of transition with regard to the labour market.

Date: 2011
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Working Paper: The costs of climate policies in a second best world with labour market imperfections (2011)
Working Paper: The costs of climate policies in a second best world with labour market imperfections (2010)
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DOI: 10.3763/cpol.2009.0012

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