Le renouvellement régulier des contrats de concession apparaît nécessaire pour bénéficier de concurrence dans certains secteurs, comme l'eau. Nous décrivons les contrats et la règle de renouvellement optimaux dans ce contexte. Ils arbitrent entre les diminutions de coûts, en cas de...

Antitrust authorities have set up leniency programs for cartel members that denounce their collusive agreements. These programs help prosecute participants and can thereby deter collusion. We compare the impact of reduced fines and positive rewards and argue that rewarding individuals, including...

Two agents sequentially contracts with different principals under moral hazard. If agents care for one another, the second principal gains by insuring them over first wages. Even with independent tasks, the first principal must offer riskier payments to induce effort.

Regulators often do not regulate all firms competing in a given sector. Due to product substitutability, unregulated competitors have incentives to bribe regulated firms to have them overstate their costs and produce less, thereby softening competition. The best collusion-proof contract entails...

Entrants may provide information to a regulator, even when they cannot be regulated. With correlated costs, yardstick-like regulatory contracts based on the output of unregulated firms nullify information rents. But they give strong incentives to the regulated incumbent to bribe competitors. A...

Price regulation and competition patterns in the ethical drug industry in france This article gives the results of an econometric modelization of the ethical drugs price and quantity determination institutionnal process for France. From price and promotion elasticities, it is shown that...

Efficiency of financial markets is one of the most studied subjects in theoretical finance. Formalization of this idea is realised by the random walk model. Numerous tests have been developed to validate the hypothesis of identically and independently distributed innovations. But the results of...

Management control practices are influenced by different professional groups, their interpretations and power struggles. We study a company whose strategy and daily management rely on non financial stakes, notably upon the concept of “brand”. We show how management accountants introduce a...

Les nations du sud de la zone Euro ont connu la prospérité dans les années qui ont suivi la création de la monnaie unique. Le bond de la consommation et l’élévation du niveau de vie se sont hélas révélés être des mirages. En favorisant un endettement massif, l’Euro a encouragé un...