The aim of this paper is to formulate new and more precise predictions regarding behavioral reactions to distributive and procedural injustice via insights from resource theory. The three theories share focus on discrepancies between actual and ideal states of existence as well as on psychological and behavioral reactions to discrepancy. But they also differ from each other in their conceptualizations and theorizing about these matters. Equity theory conceptualizes discrepancy as a perceived mismatch between inputs and outcomes; multiprinciple distributive justice and procedural justice theories view discrepancy as a mismatch between expected and applied distribution and procedural rules, respectively. Resulting feelings of inequity/injustice may trigger attempts to restore justice. Within the framework of resource theory, discrepancy concerns an inappropriate match between the nature of the provided and received resources. This leads to frustration which, in turn, may trigger attempts at retaliation. Limitations of the theories are discussed, with particular focus on their inability to match specific discrepancies with appropriate behavioral reactions. Behavioral predictions are based upon established congruence between behavioral reactions and violated procedural rules as well as type of inequity, as determined via their respective resource isomorphism. Limitations of the present integration attempt are discussed.