Most of the research on leadership in organisations draws on one of several basic conceptualisations, each of which derive from a single aspect of organisational behaviour. Leadership theories typically describe the styles leaders use on only one behavioural dimension, for example, whether their managerial focus is more on task issues or people issues. However, managerial practice requires the simultaneous exercise of leadership behaviour across many dimensions. This paper outlines Total Behaviour Leadership, a conceptual model which reflects the complexity of the multiple styles used by leader-managers in organisations. The Multi-Style Model posits that effectiveness results from the combined effect of a leader-manager’s behaviour across multiple dimensions. The model points to a need for empirical investigation of the various style patterns across multiple behavioural dimensions and of the comparative effectiveness of the different combinations of leadership styles used by leader-managers in practice.