The circular economy (CE) is seen as a model of production and consumption where resource use is reduced and extended in closed‐loop life cycles. Organisations have been fundamental in contributing towards CE for which limited outcomes are known from public organisations. This research aims to identify the factors influencing the implementation of CE and the strategies that support such implementation in the public sector. An organisational change management perspective was taken. Semi‐structured interviews were conducted with employees from the central public sector in Portugal to gather insights. Results reveal issues such as organisational culture, CE awareness for people in public sector organisations and leadership related to areas of strategy and management, human resources, and communication and assessment as key elements to consider in shifting towards circularity for this type of organisation. This study contributes to the research that has called for an expansion of the scope of CE to include human‐based issues by viewing a public organisation as a multi‐dimensional system transitioning to circularity.