This paper examines the link between a firm's organization environmental management capability, represented by the development of green teams made up of employees, and its performance. In particular, two categories of firm performance will be analysed: environmental performance and environmental reputation. This link has been investigated in a sample made of the largest publicly traded US companies. Data about green teams have been collected through the content analysis of firm environmental/sustainability/corporate social responsibility reports and/or their websites, whereas data about environmental performance and reputation are those reported in the US 500 Newsweek's 2010 Green Ranking. Regression analysis results show that the creation of employee green teams positively affects both environmental performance and environmental reputation. Copyright © 2014 John Wiley & Sons, Ltd and ERP Environment