We introduce search and matching unemployment into a model of trade with differentiated goods and heterogeneous firms …

This paper constructs a theory of the coexistence of fixed-term and permanent employment contracts in an environment … permanent employees enjoy labor protection. In a labor market characterized by search and matching frictions, firms find optimal …

This paper presents a formal theory of reciprocity. Reciprocity means that people reward kind actions and punish unkind … ones. The theory takes into account that people evaluate the kindness of an action not only by its consequences but also by … the intention underlying this action. The theory explains the relevant stylized facts of a wide range of experimental …

Matching mechanisms are regarded as an important instrument to bring about Pareto optimal allocations in a public good … interior matching equilibrium, however, emerges only under very special conditions. But we show in this note that corner … results by a simple numerical example. -- public goods ; matching ; Pareto optimality …