While there is increasing recognition by health care providers of the need to identify and intervene in cases of partner abuse, there has been little evaluation of the interventions that have been implemented. This article documents emergency department staff responses to a five-step protocol of care on partner abuse implemented in a public hospital. It draws on in-depth interviews with a range of emergency department staff members, undertaken as part of the project's process evaluation. Findings suggest protocol training provided staff members with an opportunity to gain a greater awareness and understanding of partner abuse. Protocol use improved and consolidated existing practices; however, staff members were concerned about screening all women for abuse and highlighted areas in which further support and resources are required. Taking these factors into account may assist the appropriate and effective introduction of such protocols in other health care settings.