TY - JOUR AU - Friedberg,Leora AU - Owyang,Michael TI - Explaining the Evolution of Pension Structure and Job Tenure JF - National Bureau of Economic Research Working Paper Series VL - No. 10714 PY - 2004 Y2 - August 2004 UR - http://www.nber.org/papers/w10714 L1 - http://www.nber.org/papers/w10714.pdf N1 - Author contact info: Leora Friedberg Department of Economics University of Virginia P.O. Box 400182 Charlottesville, VA 22904-4182 Tel: 434/924-3225 Fax: 434/982-2904 E-Mail: lfriedbe@nber.org Michael Owyang Research Department Federal Reserve Bank of St. Louis P.O. Box 442 St. Louis, MO 63166-0442 E-Mail: Michael.T.Owyang@stls.frb.org AB - Current and expected job tenure have fallen significantly over the last two decades. Over the same period, traditional defined benefit pensions, designed to reward long tenure, have become steadily less common. This paper uses a contract-theoretic matching model with moral hazard to explain changes in pension structure and job tenure. In our model, a decline in the value of existing jobs relative to new jobs reduces expected match duration and thus the appeal of DB pensions. We show that this explanation is consistent with observed trends and suggests an additional consequence of technological change that has not been closely studied. ER -