TY - JOUR AU - Blau,Francine D. AU - Kahn,Lawrence M. TI - Changes in the Labor Supply Behavior of Married Women: 1980-2000 JF - National Bureau of Economic Research Working Paper Series VL - No. 11230 PY - 2005 Y2 - March 2005 UR - http://www.nber.org/papers/w11230 L1 - http://www.nber.org/papers/w11230.pdf N1 - Author contact info: Francine D. Blau ILR School Cornell University 268 Ives Hall Ithaca, New York 14853-3901 Tel: 607/255-4381 Fax: 607/255-4496 E-Mail: fdb4@cornell.edu Lawrence Kahn ILR School Cornell University 258 Ives Hall Ithaca, NY 14853 Tel: 607-255-0510 Fax: 607-255-4496 E-Mail: lmk12@cornell.edu AB - Using March Current Population Survey (CPS) data, we investigate married women's labor supply behavior from 1980 to 2000. We find that their labor supply function for annual hours shifted sharply to the right in the 1980s, with little shift in the 1990s. In an accounting sense, this is the major reason for the more rapid growth of female labor supply observed in the 1980s, with an additional factor being that husbands' real wages fell slightly in the 1980s but rose in the 1990s. Moreover, a major new development was that, during both decades, there was a dramatic reduction in women's own wage elasticity. And, continuing past trends, women's labor supply also became less responsive to their husbands' wages. Between 1980 and 2000, women's own wage elasticity fell by 50 to 56 percent, while their cross wage elasticity fell by 38 to 47 percent in absolute value. These patterns hold up under virtually all alternative specifications correcting for: selectivity bias in observing wage offers; selection into marriage; income taxes and the earned income tax credit; measurement error in wages and work hours; and omitted variables that affect both wage offers and the propensity to work; as well as when education groups and mothers of small children are analyzed separately. ER -