The 'happy-productive worker' thesis is a commonsense theory that has recently evolved into the 'performing-managers' proposition. This paper summarises the research that was conducted to develop a Partial Model of Managers' Affective Wellbeing, Intrinsic Job Satisfaction and Performance. This lays the groundwork for developing a more comprehensive Model of Predictors of Managers' Performance. This represents a far more complete and sophisticated conceptualisation of the predictors of managers' performance than what is currently available in the literature. Job characteristics, role conflict, role overload, role ambiguity, organisational commitment and extrinsic job satisfaction are introduced as logical extensions to the Partial Model, and are rendered suitable for future verification.