Management scholars have historically framed trust as a consequence of organizational justice that develops slowly over time. However, theory and empirical research outside of the management literature suggest that trust is inevitably present prior to the initiation of exchange relationships. For instance, neuroscientific evidence suggests that the human brain has evolved mechanisms capable of automatically evaluating the trustworthiness of potential exchange partners without conscious deliberation. This article presents a new theoretical model suggesting that trust forms rapidly and exerts significant influence on employee perceptions of justice. Implications for research and practice are discussed.