An operation control apparatus of the invention includes a KPI tree preparation field for accepting an issues-structure tree indicating a causal relation of an issue of an organization having a plurality of departments, and KPI definition information having a KPI for evaluating the issue mutually associated with the department responsible for the KPI, and a KPI tree generation field for generating a KPI tree indicating the causal relation of the KPI from the issues-structure tree indicating the causal relation of the issue by accepting a user's association of the KPI with the issue constituting the issues-structure tree.