Building upon Iossa and Martimort (2008), we study the main incentive issues and the form of optimal contracts for Public Private Partnerships (PPPs) in transports. We present a basic model of procurement in a multitask environment in which a risk-averse firm chooses unobservable efforts in...

Whilst a lot has been said about how to fight corruption at tender stage in public procurement, post-tender corruption is an issue that remains almost unexplored. In this paper, we make a step towards filling this gap, by studying the relationship between the quality of a country's institutions,...

PPPs have been implemented broadly around the world in the infrastructure sector - water and sanitation, transports, energy and telecommunications - and, more recently, in the provision of public services -­ education, health, prisons, and water and waste management. Key aspects of the contract...