Professor Murphy teaches marketing strategy, sales management, and marketing research at University of Wisconsin-Madison. He frequently gives lectures for executive programmes on sales management and Internet branding. Prior to this, Professor Murphy was an Assistant Professor at Babson College and a Senior Lecturer at the University of Auckland, New Zealand, where he taught for Executive Diploma Programme in Business Administration. Professor Murphy focuses his research interests on personal selling, sales force management, and international business.

Professor Murphy has published articles in a number of leading journals, such as the European Journal of Marketing, Industrial Marketing Management, Journal of Business Research, Journal of Personal Selling & Sales Force Management, and Journal of Higher Education for Business. He was the case writer of an important textbook on sales force management.

Professor Murphy has provided consulting services for Internet firms and global companies including 3M and Eli Lilly. He has rich experiences in working with large Chinese companies. He has been invited to teach courses of Company-Specific Programmes for companies like China Life Insurance, Ping An Insurance, Sinochem, Novartis, and GSK etc.