This paper addresses outsourcing in the two-type optimal income tax model. If the government is able to control outsourcing via a direct tax instrument, outsourcing will not affect the marginal income tax structure. In the absence of a direct tax instrument, and under the plausible assumption...

This paper addresses optimal taxation, when the relationship between consumption and environmental damage is uncertain and treated as a random variable by policy makers. The main purpose is to analyze how additional uncertainty about this relationship affects the optimal unit tax on the...

This paper addresses transboundary environmental problems in the context of an optimal tax problem, when part of the labor force is mobile across countries. The policy instruments include both commodity taxation and nonlinear income taxation. We show how the tax policy in a noncooperative...

This paper concerns optimal income taxation under asymmetric information in a two-type overlapping generations model, where people care about their relative consumption compared to others. The appearance of positional concerns affects the policy choices via two channels: (i) the size of the...

The starting point for this paper is the potential self-control problem underlying the consumption of unhealthy food. The purpose is to analyze public policies, which are designed to correct for the welfare loss associated with such behavior. Contrary to previous studies, our analysis suggests...

This paper concerns international coordination of environmental taxation. The main purpose is to study the global welfare effects that will arise, if there is an agreement between countries to slightly increase their emission taxes. We show that even if each individual country has chosen its...

This paper concerns optimal redistributive income taxation and provision of a public input good in a two-type model with a minimum wage policy implemented for the low-ability type, where firms may use some of their resources for outsourcing by locating part of the production process abroad. Our...

Earlier literature on tax competition and policy coordination typically assumes that the labor market is competitive; a description less suitable for Europe, where trade unions have had a strong position in the labor market for a long time. This paper concerns factor income taxation and public...

This paper contains a fairly brief, but self-contained, version of the history of welfare economics, as well as the more modern welfare results. We introduce public goods and asymmetric information, and we hint at some of the modern mechanism design results. The paper also contains a section on...

This paper analyzes optimal taxation and risk-sharing arrangements in an economy with two levels of government. Both levels provide public goods and finance their expenditures via labor income taxation, where the tax base is responsive to the private agents' labor supply decisions. The...