While there has been much research on organizational innovation and on individual creativity, little research has examined the social psychological factors predicting work group innovation. In this exploratory study, using a new measure of innovativeness, eight health care teams were studied. Members of five ‘innovative’ and three ‘traditional’ teams (comprising 43 health care professionals) completed questionnaires examining aspects of individual and group work experience, and produced inventories of innovation reports. On the basis of these inventories, team innovativeness was rated by experienced health care professionals. Team innovation was predicted by climate for innovation (in particular tolerance of diversity), team commitment and team collaboration. The content of health care team innovations was also examined to reveal current trends.