Managers realize that they should avoid complex green supply initiatives when they do not have the capabilities to implement them. However, they have little guidance on how these capabilities can be developed. This paper provides an initial analysis of the role of supply management capabilities in green supply. We argue that the implementation of green supply is better explained by focusing on the development and deployment of an organization's specialized internal resources, rather than by the more usual focus on external environmental pressures on a firm. Further, we argue that capabilities appropriate for green supply are developed by a proactive corporate environmental stance and by a more strategic purchasing and supply management approach. We test our model using data from a two‐phase survey of 70 operating units within UK public limited companies. Our results indicate support for our conjecture that supply management capabilities are jointly developed by a proactive corporate environmental approach and a strategic purchasing and supply process. Our study results should be useful to business strategists, regulators, and researchers interested in the predictors of corporate green behavior. They should also assist future researchers in many branches of environmental management who are seeking to explore the role of the internal capabilities of firms in supporting environmental management.

 When will individuals speak up about organizational issues, and when will they remain silent? We suggest that organizational voice will be significantly influenced by individuals' perceptions of the attitudes towards an issue within their workgroup. In particular, individuals will be more likely to speak up when they believe that their position is supported by others, and remain silent when they believe that it is not. We explain this using the 'spiral of silence' proposed by NoelleNeumann (1974NoelleNeumann ( , 1985NoelleNeumann ( , 1991 and widely used in public opinion research, which explains how majority opinions become dominant over time and minority opinions weakened.Spirals of silence within groups can restrict the open and honest discussion that is essential to organizational improvement. Noelle-Neumann's spiral of silence emphasizes the horizontal pressures that the threat of isolation and corresponding fear of isolation exert to keep people from being open and honest about their opinions. We argue in this paper that the fear and threat of isolation are particularly powerful for members of invisible minorities such as gay and lesbian employees. We propose a second, vertical 'spiral of silence' may develop through processes at a more micro level within the workgroup and organization. This second spiral begins with the inability to fully express one's personal identity within the workgroup because of a negative climate of opinion towards a particular aspect of one's identity. This may be especially true for 'invisible' sources of diversity such as sexual orientation. Revealing a potentially disruptive identity might impair social cohesion: concealing it, however, can inhibit social exchange and task exchange and reduce self-efficacy, leading to organizational silence. However, an alternate virtuous spiral can result in which individuals will feel empowered to express organizational voice.

citizens, community engagement, community groups, corporate philanthropy, social partnerships, social strategy, stakeholder engagement, systematic review,

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