The number of constructs developed to assess workplace aggression has flourished in recent years, leading to confusion over what meaningful differences exist (if any) between the constructs. We argue that one way to frame the field of workplace aggression is via approach/avoidance principles, with various workplace aggression constructs (e.g., abusive supervision, supervisor undermining, and workplace ostracism) differentially predicting specific approach or avoidance emotions and behaviors. Using two multi-wave field sample of employees, we demonstrate the utility of approach/avoidance principles in conceptualizing workplace aggression constructs, as well as the processes and boundary conditions through which they uniquely influence outcomes. Implications for the workplace aggression literature are discussed.