Social work is a relationship-based profession. For this reason, social work professionals need to be perceived as trustworthy by those with whom we work. This address outlines the nature and importance of trustworthiness and the specific issues the social work profession faces in relation to the question of trustworthiness. I argue that scandals in human services and faith-based institutions as well as pressures associated with new public management create further challenges to achieving trustworthiness. The address discusses how the profession can enhance its trustworthiness through increasing our capacity to articulate professional purpose, committing to professional excellence and to being courageous in speaking out about abuses of power that impact on the lives of people who use our services.