JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. American Sociological Association is collaborating with JSTOR to digitize, preserve and extend access to American Sociological Review. I examine the process by which single mothers who have ever experienced and ended a spell on welfare return to welfare for further economic support. My analyses address the permanency of welfare independence by type of exit and identify those women who manage to stay off welfare. I use the Panel Study of Income Dynamics (PSID) for the years 1983 to 1988; the data contain monthly reports of welfare receipt (AFDC) and employment status. Returns to welfare are quite common and often occur soon after leaving: Over one quarter of the women in this study return to welfare within one year of exiting, and 42 percent return within two years. I find that repeat dependency on welfare is determined by social isolation, child-care responsibilities, human capital, and family economic status. Moreover, the route by which women exit welfare is less important to their chances of remaining off welfare than is the sequence of life events and changing circumstances that occur after their welfare exit. R esearch interest in women and poverty has heightened over the last decade as increasing numbers of women and children face economic disadvantages. The continued growth of female-headed households, coupled with stagnant wages at the low end of the wage distribution during the 1980s, has increased poverty among women and children. By 1992, over 80 percent of persons in poor families were women and chil-* Direct all correspondence to Kathleen Mullan Harris,