This practicum project investigated the management of substitute staff at a workplace day care center in Ontario, Canada. Although the center was a locally noted "model" facility, an increase in the use of substitute staff raised concerns about consistency and quality of care. A 10-week management plan was implemented which involved: (1) distribution of orientation, general, and security information packages to substitute staff; (2) instructional interactions between substitutes and the center's director and permanent staff; and (3) evaluation of and feedback on substitutes' performance. The first objective of the implementation, for substitute staff to achieve a full knowledge of the center's philosophy, had conflicting results, indicating that more feedback is necessary to ensure application of the philosophy in daily activities. Another objective, elimination of security lapses, was successful. Negative program delivery impacts from use of substitute staff was also reduced, but not to the extent desired over the implementation period. Explanations for this finding include lack of time and subsequent low number of experiences for each substitute teacher. (Contains 16 references.) (EV)