Micromanagement (MM) is a popular topic in management circles, where its negative reputation is palpable, and yet academics have not shared this interest. As a result, our understanding of MM is deficient, marred by disjointed definitions and paradoxical views. Our research aims to clarify the construct and measurement of MM through a series of five studies that (1) define the MM construct, (2) develop a psychometrically reliable and valid measure, and (3) validate a preliminary nomological network. Based on combined deductive and inductive approaches, we establish a comprehensive construct definition of MM. Subsequently, we develop and validate a nine-item Micromanagement Scale (MMS-9). Drawing on data from eight distinct samples encompassing 1,723 individuals employed across diverse industries, we found that (a) MM is a hierarchical construct comprising three related core attributes (i.e., controlling, close monitoring, detail focus) and three key features (i.e., excessive, sustained, unnecessary), (b) the MMS-9 exhibits nomological validity, as evidenced by its significant relationships with theorized antecedents (e.g., low trust and leader-member exchange) and consequences (e.g., high turnover intentions and emotional exhaustion), and (c) the MMS-9 demonstrates discriminant and incremental validity against relevant orbiting leadership constructs (i.e., authoritarian leadership, participative leadership, empowering leadership, initiating structure, directive leadership, and abusive supervision). We discuss the implications of the MMS-9’s availability for advancing the study of micromanagement, with particular focus on potential avenues for future research.