Equity theory has been widely applied to business settings by industrial psychologists to describe the relationship between an employee’s motivation and his or her perception of equitable or inequitable treatment. In a business setting, the relevant dyadic relationship is that between employee and employer. As in marriage and other contractual dyadic relationships, equity theory assumes that employees seek to maintain an equitable ratio between the inputs they bring to the relationship and the outcomes they receive from it (Adams, 1965). Equity theory in business, however, introduces the concept of social comparison, whereby employees evaluate their own input/output ratios based on their comparison with the input/outcome ratios of other employees (Carrell and Dittrich, 1978). Inputs in this context include the employee’s time, expertise, qualifications, experience, intangible personal qualities such as drive and ambition, and interpersonal skills. Outcomes include monetary compensation, perquisites (“perks”), benefits, and flexible work arrangements. Employees who perceive inequity will seek to reduce it, either by distorting inputs and/or outcomes in their own minds (“cognitive distortion”), directly altering inputs and/or outcomes, or leaving the organization (Carrell and Dittrich, 1978). These perceptions of inequity are perceptions of organizational justice, or more specifically, injustice. Subsequently, the theory has wide-reaching implications for employee morale, efficiency, productivity, and turnover.
