This project assessed an intervention to improve employee customer service behaviors (correct greetings and closing behaviors). A combination of task clarification and manager-delivered social praise resulted in increased correct greeting from 11.5% to 66% and correct closing from 8% to 70%. The effect was maintained at a 48-week follow-up for employees who were present during the initial study period, but not for more recently hired employees. The results suggest that task clarification combined with manager-delivered social praise is an effective way to improve employee customer service behaviors. (Contains 1 figure.)