The dormant and compliance strategy stages clearly illustrate that sustainability cannot be widely integrated without internal processes to support integration. Most importantly, cognitive bar riers can severely impede sustainability integration. Social control an informal form of control established through hiring personnel with sustainability values and organisational socialisation pro-cesses, may act as a cognitive enabler for sustainability integration. However, such social controls were mainly confined to the HSE team at the HQ rather than embraced by all employees throughout the organisation. Although sustainability ambassadors were appointed in subsidiaries, their roles were unclear and the impor tance of sustainability was not communicated or understood among employees who were not directly involved in the sustain ability process