Professor Lovejoy's historical research was in the area of capacity management, decision making with incomplete information and supply chain management and he has published numerous articles in top academic journals on these topics.  His current research interests focus on health care and innovation.   In the area of innovation, Professor Lovejoy has worked with companies on new product development and the management of innovation, and his new product development course has enjoyed coverage by CNN, the Wall Street Journal and the New York Times.  In health care Professor Lovejoy has worked with hospitals and clinics on patient and information flows and process assessment and improvements.  He is currently co-authoring a text on hospital operations. 

His past editorial activities include Department Editor for the Operations and Supply Chains department of the academic journal, Management Science, and Senior Editor for Manufacturing and Services Operations Management.