Workplace safety recommendations and regulations are constantly evolving. This paper reviews workplace safety literature on safety culture and inter-organizational knowledge sharing among healthcare organizations. The research question asks, "how does sustainable workplace safety occur in a healthcare" setting? The findings of the literature review assisted in the creation of a model to promote a culture of safety within healthcare fields and moved beyond individual organizations to support sustainable workplace safety practices. The context of hazardous drug handling is used as an example for model application throughout the paper. The C[superscript 2]oST3 model promotes collaboration among and within organizations to promote a "culture of safety" (C[superscript 2]oS) through "transfer" (T), "translation" (T), and "transmission" (T) of knowledge. [For the full proceedings, see ED631897.]