In order to explore the possibility of basing the Ontario Library Association's (OLA's) professional development programming on systematic needs assessment, a pilot project was undertaken to determine the professional development needs of library workers in Ontario and to experiment with the Nominal Group Technique (NGT)--a means of providing for a structured group meeting which will satisfy basic problem-solving requirements and the need for equality of participation. NGT needs assessment workshops were conducted with four homogenous groups, each consisting of six or seven participants, and a Delphi process--a multi-stage questionnaire process--was also conducted with OLA program planners. Suggestions for improvement of OLA programming were made: i.e., covering new facets of topics, supplying sharper topic focus, providing a variety of instructional levels and methods, meeting perennial needs, and establishing new systems of delivery and a provincial information clearinghouse. There were also gaps in the expressed needs which require further examination. The pilot project indicated that it is practical to carry out needs assessment in the field and that NGT is a workable and useful tool to which participants respond very positively. The Delphi process was shown to provide an option for conducting needs assessment where the participants are widely dispersed. It is recommended that OLA conduct ongoing needs assessment for its professional development programming. (ESR)