We explored group and organizational safety norms as antecedents to meeting leader behaviors and achievement of desired outcomes in a special after-action review case—a post-fall huddle. A longitudinal survey design was used to investigate the relationship between organizational/group safety norms, huddle leader behavior, and huddle meeting effectiveness. The sample included health care workers in critical access hospitals (N = 206) who completed a baseline safety norm assessment and an assessment of post-fall huddle experiences 3 to 6 months later. Findings indicate that organizational and group safety norms relate to perceived huddle meeting effectiveness through appropriate huddle leader behavior in a partial mediated framework. In contrast to previous research showing after-action reviews predicting group and organizational safety norms, the longitudinal study presented here suggests that group and organizational safety norms set the stage for the enactment of post-fall huddles in an effective manner.