AIM: This study investigates the determinants of morale among Registered Nurses in Queensland, Australia. BACKGROUND: In light of the public discussions on the issues facing the future of nursing, it is critical to understand the factors that influence morale. METHODS: A 160-question instrument sought information from Registered Nurses on their perceptions of 'self', work and morale. A response rate of 41% was achieved (n = 343) from a convenience sample of three acute hospitals. RESULTS: Following binary logistic regression modelling for organizational morale, significant relationships were found with patient care provision and team interaction. Binary logistic regression modelling for personal morale revealed positive relationships with team interaction, consultation, professional recognition and lower levels of patient abuse. CONCLUSION: The results point to a number of organizational and professional issues that can be considered by health care administrators and policy makers to develop workplaces that have a positive impact on the morale of nurses.