The National Task Bank of 547 tasks in the public welfare field was developed from tasks written by eight states and by the Social and Rehabilitation Service. This document describes the background and development of the bank and outlines the procedures used. The task bank illustrates 13 functional cagegories of data, people, and things for welfare agency personnel including professional social workers, paraprofessionals, and administrative and clerical workers. Within each category tasks were organized into subcategories based on content and work flow and were coded for identification purposes, not for level of work. The bulk of the document consists of the task statements in a form similar to that of the Upjohn Task Bank cards. The bank does not provide complete coverage of the field. State agencies may need to develop new tasks or modify those in the bank to fit their specific situations. Related documents are available as VT 020 662 and VT 020 663 in this issue. (MF)