With the passage of Temporary Assistance for Needy Families (TANF), the nation's welfare system for poor women and their children was fundamentally transformed. These profound changes have the potential to dramatically alter the nature of state and local welfare agencies and to create new and expanded roles for human service workers, including social workers, both within public welfare agencies and other community agencies. This article reviews the major provisions of TANF and its implications for state welfare agencies and recipients. Roles for human service workers fn public welfare are delineated for direct practice, management staff development policy analysis and advocacy, and research. This is the second of two companion articles addressing issues raised by TANF. In the last issue, the new work requirements and their implications for welfare employment programs were reviewed (Hagen, 1998). In this article, the implications of TANF for the roles of human service practitioners in direct practice, management, staff development, policy analysis and advocacy, and research are considered. To provide the context for this discussion, the major provisions of TANF are outlined.WITH THE REPEAL OF AID to Families with Dependent Children (AFDC) and the passage of new federal legislation for public welfare, the nation has embarked on an entirely new direction in respondingor notto the needs of poor mothers and their children. Under the new welfare law, state and local public welfare programs have the potential for undergoing dramatic transformation and revisionand will, in fact, be required to do so if the objectives of the new Temporary Assistance to Needy Families (TANF) legislation are to be met. Among its objectives are to allow children to be cared for in their own homes and to "end the dependence of needy parents on government benefits by promoting job preparation, work, and marriage" (42 U.S.C. 601 [a] [2]). While these objectives are not unlike those of prior AFDC legislation, the opportunities and constraints under which state and local welfare agencies must operate, and the expectations and limitations placed on adult welfare recipients have changed the context of public welfare significantly. TANF represents a radical change in welfare policy rather than the nation's more customary incremental approach. Or as Edelman (1997) puts it, "Congress and the president have dynamited a structure that was in place for six decades" (p. 56).The fundamental shift in federal welfare legislation sets the stage for not only examining the policy directions of state and local governments but also for analyzing the potential roles of human service practitioners. The changes in public welfare have the potential to create new and expanded roles for human service providers, including social workers, both within public welfare agencies and other community agencies. For social work in particular, TANF may present an opportunity to reconsider its relationship to public welfare generally. Over the past thirty years, the role of social ...