This document summarizes John Stacey Adams' equity theory of motivation. The theory posits that employees compare their input-outcome ratios to those of referent others, and that feelings of inequity can de-motivate. It defines key terms like referent and types of justice. It also outlines strategies for addressing inequity, like changing inputs/outcomes, perceptions, or referents. Finally, it recommends consistently applying equitable behavior, effective communication, and using compensation alongside other motivators.