I urval från Stockholms universitets publikationsdatabas

• The Gains from Pension Reform

  2002. Assar Lindbeck, Mats Persson.

  Rapport

  We classify social security pension systems in three dimensions: actuarial versus non-actuarial, funded versus unfunded, and defined-benefit versus defined contribution systems. Recent pension reforms are discussed in terms of these dimensions. Shifting to a more actuarial system reduces labor-market distortions, although limiting the scope for redistribution. Shifting to a funded system may increase saving, redistribute income to future generations and distort contermporary labor supply. A partial shift to a funded system helps individuals diversify their pension assets. A shift from a defined-benefit to a defined-contribution system means that income risk will be shifted from workers to pensioners.

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• The Effects on Sick Leave of Changes in the Sickness Insurance System

  2001. Magnus Henrekson, Mats Persson.

  Rapport

  In order to get a more complete picture of how labor supply is affected by economic incentives, the effects on absenteeism and not just on contracted hours should be taken into account. In particular, the effects on absenteeism due to sick leave can be considerable. In this paper we examine whether the level of sick leave compensation affects sick leave behavior. Using time-series data for Sweden spanning a long period (1955-99) with numerous changes of the compensation level, we generally find strong effects of the expected sign. Reforms implying more generous compensation for sick leave tend to be associated with permament increases in total sick leave per person employed and vice versa. These findings are reinforced in a panel study covering the 1983-91 period.

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• Time Consistency of Fiscal and Monetary Policy

  1985. Mats Persson, Torsten Persson, Lars E.O. Svensson.

  Rapport

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• Gender and Overconfidence

  2004. Claes Bengtsson, Mats Persson, Peter Willenhag.

  Rapport

  Do males differ from females in terms of self-confidence? The structure of the Economics I exam at Stockholm University provides an opportunity to shed some light in this question. By answering an extra, optional question, the students can aim for a higher mark. We find a clear gender difference in that male students are inclined than female students to take this opportunity. This difference in self-assessment is more pronounced among younger than among older students.

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• Time Consistency of Fiscal and Monetary Policy

  2005. Mats Persson, Torsten Persson, Lars E.O. Svensson.

  Rapport

  This paper demonstrates how time consistency of the Ramsey policy – the optimal fiscal and monetary policy under commitment – can be achieved. Each government should leave its successor with a unique maturity structure for the nominal and indexed debt, such that the marginal benefit of a surprise inflation exactly balances the marginal cost. Unlike in earlier papers on the topic, the result holds for quite a general Ramsey policy, including timevarying policies with positive inflation and positive nominal interest rates. We compare our resuklts with those in Persson, Persson, and Svensson (1987), Calvo and Obstfeld (1990), and Alvarez, Kehoe, and Neumeyer (2004).

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