Subal Kumbhakar and Lennart Hjalmarsson, "Labor-Use Efficiency in Swedish Social Insurance Offices", Journal of Applied Econometrics, Vol. 10, No. 1, 1995, pp. 33-47. The data for this paper are confidential. Anyone wishing to make use of them should contact Lennart Hjalmarsson Department of Economics School of Economics and Commercial Law University of Goteborg Viktoriagatan 30 S-41125 Goteborg, Sweden