The amount and type of pay information made available by organizations to employees and between employees can have important effects on employee attitudes and behaviors as well as organizational performance. Although a large body of research on pay information exists, on topics ranging from pay transparency to pay secrecy, researchers have used inconsistent definitions (pay secrecy, openness, transparency, pay communications) and operationalizations that hinder knowledge development. In this paper, consistent with the theory of information asymmetry and based on research reviewed here, we promote a new integrative definition (“pay information disclosure”) that anchors both current and future research. We define the concept of pay information disclosure (PID) as the communication of relevant pay information between and among actors. By viewing pay information disclosure research in an information asymmetry context, with its focus on the causes and consequences of unequal access to information, we can synthesize research that examines motives for and outcomes of PID for individuals, organizations, and society. Based on our review, we outline a research agenda that identifies research questions and methods to stimulate studies to better understand the role of pay information in the workplace and in society.