Abstract: Human capital is a valuable resource; it pulls the other factors of production and gives strategic foresight to every corporation and nation. It plays an integral part in the value creation process of modern corporations and economies. Thus, several studies have been carried out to ascertain the link between investments on human resource on the performance of the micro and macro economy. This paper sets to explore available literature and synthesize the ideas and positions there-in to take an informed position on the categorization of human capital investments. To achieve this, the study adopted a desk research approach and reviewed several related conceptual postulations, theories and empirical studies on the subject to lay credence to take an informed position