Tim's research focuses on the impact of environmental and social responsibility issues on supply chain and operations management decisions. Topics he has worked on include investigating firms' and non-governmental organizations' decisions regarding substances of concern in product lines, examining collaborative methods to improve the management of chemicals and toxic substances in supply chains, and studying consumers' valuations of transparency in supply chains with regards to social responsibility practices. Prior to joining the Darden faculty, Tim worked for several companies including PricewaterhouseCoopers and RadioShack Corporation.