The medieval system of payment in Sweden was complex. This paper aims at clarifying some essential features of it in a way that may facilitate further study of medieval Swedish economic history by international researchers. For instance, the presentation of the exchange rate between the silver...

A customer market model in which firms and customers form long-term relations is developed and integrated into the canonical New Keynesian framework. This leads to two important differences compared to the standard model. First, the purely forward-looking Phillips curve is replaced by a hybrid...

A fair price model in which firms are hesitant to raise their prices due to concerns about adverse consumer reactions is developed and integrated into the standard New Keynesian framework. In the model, monetary neutrality arise as a combination of a fairness constraint putting a limit on how...

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In this paper we allude to a novel role played by the non-linear income tax system in the presence of adverse selection in the labor market due to asymmetric information between workers and firms. We show that an appropriate choice of the tax schedule enables the government to affect the wage...