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Title: The cost of contract renegotiation: Evidence from the local public sector

Author(s): Philippe Gagnepain, Marc Ivaldi and David Martimort

Publication Date: October 2010

Keyword(s): Contract, Public transit and Renegotiation

Programme Area(s): Industrial Organization

Abstract: The renegotiation of regulatory contracts is known to prevent regulators from achieving the full commitment efficient outcome in dynamic contexts. However, assessing the cost of such renegotiation remains an open issue from an empirical viewpoint. To address this question, we fit a structural principal-agent model with renegotiation on a set of urban transport service contracts. The model captures two important features of the industry. First, only two types of contracts are used in practice (fixed-price and cost-plus). Second, subsidies increase over time. We compare a scenario with renegotiation and a hypothetical situation with full commitment. We conclude that the welfare gains from improving commitment would be significant but would accrue mostly to operators.

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Bibliographic Reference

Gagnepain, P, Ivaldi, M and Martimort, D. 2010. 'The cost of contract renegotiation: Evidence from the local public sector'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=8042