The performance diagnostic checklist (PDC) was administered to examine the variables influencing the offering of promotional stamps by employees at two sites of a restaurant franchise. PDC results suggested that a lack of appropriate antecedents, equipment and processes, and consequences were responsible for the deficits. Based on these results, an intervention consisting of task clarification, self-monitoring, equipment modification, goal setting, and graphic feedback was implemented and evaluated with a multiple baseline design across settings. The results for restaurant I yielded baseline and intervention means of 25% and 72%, respectively. The results for restaurant 2 yielded baseline and intervention means of 11% and 80%, respectively. Overall, these results suggest that the PDC is a useful tool for guiding intervention selection for performance deficits which occur across more than one site.