This thesis consists of a summary and four papers. The first two papers address political economy and industrial organization aspects of agricultural policy, and the last two international aspects of environmental policy. Paper [1] explains Common Agricultural Policy (CAP) subsidies to farmers...

This paper concerns optimal income taxation and provision of a state-variable public good under asymmetric information in a two-type overlapping generations model, where people care about their relative consumption. Each individual may compare his/her own current consumption with his/her own...

This paper considers a two-type, self-selection, overlapping generations model with nonlinear labor income and capital income taxation and public good provision, when people care about their relative consumption compared to others. In each case, the standard optimality expressions are modified...

This paper concerns optimal nonlinear taxation in an OLG model with two ability-types, where people care about their own consumption relative to (i) other people’s current consumption, (ii) own past consumption, and (iii) other people’s past consumption. We show that intertemporal...

Previous studies on public policy under relative consumption concerns have ignored the role of leisure comparisons. This paper considers a two-type optimal nonlinear income tax model where people care both about their relative consumption and their relative leisure. Increased consumption...

This chapter concerns welfare measurement in economies, where the government raises revenue by means of distortionary taxation. A major issue is the treatment of (state-variable) public goods in the context of social accounting. Although the marginal value that the government attaches to a...

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 concerns optimal factor income taxation and provision of a public good in a small open economy, which is characterized by union wage setting. The analysis is based on a general equilibrium model, where the hours of work are endogenous, and the tax instruments are linear taxes on labor...

This paper contributes to the theory of social accounting. As such, it tries to extend earlier literature on the welfare equivalence of the comprehensive net national product in two main directions, both of which refer to the public sector. One is by considering welfare measurement problems...

This paper analyzes optimal differential commodity taxation, together with optimal nonlinear income taxation, in order to deal with positional preferences. It also derives the optimal public provision of private goods both when differential commodity taxation is feasible and when it is not. It...