Democratic countries with substantial inequality and where people believe that success depends on connections and luck induce political support for high tax rates and generous welfare states. Traditional wisdom is that such policies harm the economy, but there is not much evidence that countries...

Optimal climate policy is studied in a Ramsey growth model. A developing economy weighs global warming less, hence is more likely to exhaust fossil fuel and exacerbate global warming. The optimal carbon tax is higher for a developed economy. We analyze the optimal time of transition from fossil...

Unilateral second-best carbon taxes are analysed in a two-period, two-country model with international trade in final goods, oil and bonds. Acceleration of global warming resulting from a future carbon tax is large if the price elasticities of oil demand are large and that of oil supply is...

Central bank policy suffers from time-inconsistency when facing a banking crisis: A bailout is optimal ex post but ex ante it should be limited to control moral hazard. Dollarization provides a credible commitment not to help at the cost of not helping even when it would be ex ante optimal to do...

This Paper argues that the backbone of the pre-1914 international financial architecture was the concern about moral hazard. No decentralized system can leave without safeguards against free riding and this typically means that problem countries must find by themselves the means to fix their...

This paper studies the strategic interaction between a bank whose deposits are randomly withdrawn, and a lender of last resort (LLR) that bases its decision on supervisory information on the quality of the bank’s assets. The bank is subject to a capital requirement and chooses the liquidity...

We study a model of sovereign debt crisis that combines problems of creditor co-ordination and debtor moral hazard. Solving the sovereign debtor’s incentives leads to excessive ‘rollover failure’ by creditors when sovereign default occurs. We discuss how the incidence of crises might be...

Consider Holmström.s moral hazard in teams problem when there are n agents, each agent i has a a(i)-dimensional strategy space and output can be m-dimensional. We show that a compensation mechanism that satisfies budget balance, limited liability and implements an efficient allocation...

This paper discusses the optimal organization of sequential agency problems with contractible control actions under limited liability. In each of two stages, a risk-neutral agent can choose an unobservable effort level. A success in the first stage makes effort in the second stage more...

Under contingent fees the attorney gets a share of the judgement; under conditional fees the lawyer gets an upscale premium if the case is won which is, however, unrelated to the adjudicated amount. We compare conditional and contingent fees in a principal-agent framework where the lawyer...