We explore intergenerational and international risk sharing in a general equilibrium multiple-country model with two-tier pensions systems. The exact design of the funded tier is key for the way in which risks are shared over the various generations. The laissez-faire market solution fails to...

A politically realistic approach to environmental policy seems to require avoiding significant profit-losses in major pollution-related industries. The government can avoid such losses by freely allocating some emissions permits or by exempting some inframarginal emissions from a pollution tax....

We explore the role of firms in insuring non-verifiable output. As a device that allows workers to commit to the delivery of their output, the firm arises endogenously as an alternative to the market if workers are sufficiently risk averse and the firm can base its incentive payments on good...