"A Continuous Model of Income Insurance" (with Mats Persson), IFN Working Paper No. 840, 2010.
"Prospects for the Welfare State", IFN Working Paper No. 731, 2008.
"Social Interaction and Sickness Absence" (with Mårten Palme and Mats Persson), IFN Working Paper No. 725, 2007.
"Economic-Social Interaction in China", IFN Working Paper No. 720, 2007.
"An Essay on Economic Reforms and Social Change in China", Working Paper No. WPS 4057, World Bank, Washington, DC.
"The Welfare State – Background, Achievements, Problems", IFN Working Paper No. 662, 2006.
"Job Security and Work Absence: Evidence from a Natural Experiment" (with Mårten Palme and Mats Persson), IFN Working Paper No. 660, 2006.
"A Model of Income Insurance and Social Norms" (with Mats Persson), IFN Working Paper No. 659, 2006.
"Sustainable Social Spending", IFN Working Paper No. 646, 2005.
"Improving the SGP: Taxes and Delegation rather than Fines" (with Dirk Niepelt), IFN Working Paper No. 633, 2004.
"The Firm as a Pool of Factor Complementarities" (with Dennis J. Snower), IFN Working Paper No. 598, 2003.
"An Essay on Welfare State Dynamics", IFN Working Paper No. 595, 2003.
"Improving the Performance of the European Social Model – The Welfare State over the Life Cycle", IFN Working Paper No. 587, 2003.
"Social Norms and Welfare State Dynamics" (with Sten Nyberg and Jörgen W. Weibull), IFN Working Paper No. 585, 2002.
"The European Social Model: Lessons for Developing Countries", IFN Working Paper No. 581, 2002.
"The Gains from Pension Reform" (with Mats Persson), IFN Working Paper No. 580, 2002.
"Raising Children to Work Hard: Altruism, Work Norms and Social Insurance" (with Sten Nyberg), IFN Working Paper No. 557, 2001.
"Changing Tides for the Welfare State - An Essay", IFN Working Papers No. 550, 2001.
"Pensions and Contemporary Socioeconomic Change", IFN Working Paper No. 548, 2001.
"What Are the Gains from Pension Reform?" (with Mats Persson), IFN Working Paper No. 535, 2000.
"The Division of Labor and the Market for Organizations" (with Dennis J. Snower), IFN Working Paper No. 528, 2000.
"ICT and Household-Firm Relations" (with Solveig Wikström), IFN Working Paper No. 527, 2000.
"The Prize in Economic Sciences in Memory of Alfred Nobel - 1969-1998", IFN Working Paper No. 517, 1999.
"How Can Economic Policy Strike a Balance between Economic Efficiency and Income Equality?", IFN Working Paper No. 505, 1998.
"Can and Should a Pay-As-You-Go Pension System Mimic a Funded System?" (with John Hassler), IFN Working Paper No. 499, 1998.
"Swedish Lessons for Post-Socialist Countries", IFN Working Paper No. 498, 1998.
"Intergenerational Risk Sharing, Stability and Optimality of Alternative Pension Systems" (with John Hassler), IFN Working Paper No. 493, 1998.
"New Keynesianism and Aggregate Economic Activity", IFN Working Paper No. 491, 1997.
"Social Norms and Economic Incentives in the Welfare State" (with Johan Nyberg and Jörgen W. Weibull), IFN Working Paper No. 476, 1997.
"Welfare-State Dynamics", IFN Working Paper No. 474, 1996.
"Centralized Bargaining, Multi-Tasking, and Work Incentives" (with Dennis J. Snower), IFN Working Papers No. 473, 1996.
"Full Employment and the Welfare State", IFN Working Paper No. 469, 1996.
"The West European Employment Problem", IFN Working Paper No. 466, 1996.
"Social Norms, the Welfare State, and Voting" (with Sten Nyberg and Jörgen J. Weibull), IFN Working Paper No. 453, 1996.
"Price Dynamics and Production Lags" (with Dennis J. Snower), IFN Working Papers No. 451, 1996.
"Incentives in the Welfare State: Lessons for would-be welfare states" IFN Working Paper No. 449, 1996.
"Reorganization of Firms and Labor Market Inequality" (with Dennis J. Snower), IFN Working Paper No. 448, 1995.
"Welfare State Disincentives with Endogenous Habits and Norms", IFN Working Papers No. 441, 1995.
"Hazardous Welfare-State Dynamics", IFN Working Paper No. 428, 1995.