Organisation culture is a socially driven phenomenon that naturally emerges within organisations and sub-groups over time. It comprises the shared: attitudes, perceptions, beliefs, values, social behaviour, and accepted work practices or norms. People naturally desire to conform to group norms to gain acceptance by the group and receive its benefits. A performance enhancing culture is one in which all staff, from top level management to individual workers; share a commitment to work in a way that positively promotes all facets of the organisation’s performance that equitably satisfies stakeholder's needs, expectations and aspirations. Sub-organisation cultures may exist within the overall organisation culture where the aspects are shared by a particular subgroup. Organisation culture cannot be directly managed or imposed in a similar way to a management system. A performance enhancing organisation culture can only be nurtured by directing and encouraging performance enhancing human behaviours via visible and clear corporate leadership and strict compliance with the management system which must be administered firmly and justly. [MSS 1000 definition] Group shared values and perceptions of acceptable and unacceptable behaviours. NOTE 1: Culture is a socially driven phenomenon where people conform to norms to gain the acceptance of the group and resulting benefits. NOTE 2: Culture cannot be directly imposed by the leaders of an organisation – it establishes over time through the influence of a combination of leadership communication, example and compliance with the implemented management system. Behaviours that are encouraged or enforced over time influence and create the culture. NOTE 3: A positive culture values justice, responsible questioning and equitably satisfying stakeholder needs and expectations.