Although the need to theorize ethics within the complexities of nursing practice has been identified within the nursing literature, to date the link between ethics epistemology and specific nursing actions has received limited attention. In particular, little exploration has been carried out to examine how nurses ‘know’ what is ethical and the knowledge they draw upon to inform their nursing actions within the complexities of their everyday practice. This study describes a participatory inquiry project that focused on developing and articulating (...) an epistemology of ethics while in the midst of everyday nursing work. Epistemological and methodological insights are discussed in light of the challenges nurses face in contemporary healthcare contexts. (shrink)