Procurement Contracting With Time Incentives: Theory and Evidence

Gregory Lewis and Patrick Bajari

The Quarterly Journal of Economics, 2011, vol. 126, issue 3, 1173-1211

Abstract: In public procurement, social welfare often depends on how quickly the good is delivered. A leading example is highway construction, where slow completion inflicts a negative externality on commuters. In response, highway departments award some contracts using scoring auctions, which give contractors explicit incentives for accelerated delivery. We characterize efficient design of these mechanisms. We then gather an extensive data set of highway projects awarded by the California Department of Transportation between 2003 and 2008. By comparing otherwise similar contracts, we show that where the scoring design was used, contracts were completed 30--40% faster and the welfare gains to commuters exceeded the increase in procurement costs. Using a structural model that endogenizes participation and bidding, we estimate that the counterfactual welfare gain from switching all contracts from the standard design to the efficient A+B design is nearly 22% of the total contract value ($1.14 billion). Copyright 2011, Oxford University Press.

Date: 2011
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Working Paper: Procurement Contracting with Time Incentives: Theory and Evidence (2009)
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