Pro-environmental behaviour (PEB) within organisations is governed by a number of factors, related to the staff (e.g. attitudes and beliefs), as well as the organisation (e.g. bureaucracy, leadership and culture). Traditionally, approaches to effecting behaviour change have been set within a psycho-sociological context. However, given the complexity and interrelated nature of the factors, this chapter argues for the need to employ transition processes that are primarily represented by the multi-level perspective (MLP) and social practices’ (SPs) affiliates. These multifaceted theoretical developments offer improved possibilities to best manage the change processes. They could also contribute to an improved understanding of how to change employees’ PEB both at their workplace and during their external societal roles/activities. Recommendations for practitioners are also suggested.