Despite the integral role that frontline health care workers play in providing care to older adults and those with chronic conditions and disabilities, few studies have examined the relationships between the working conditions endured by this workforce, the quality of the care they deliver, and the outcomes of patients for whom they care. Thus, the authors: (1) developed a novel conceptual framework that highlights these relationships, and (2) performed a comprehensive search and analysis of the literature (PubMed, AgeLine, CINAHL, JSTOR, Scopus, Web of Science) to assess the relationships proposed in the framework. A total of 31 studies were included. The results suggest that working conditions affect workers themselves, the care they deliver, and their patients' outcomes. Additional studies, as well as policy solutions, are needed to address the issues faced by this workforce in order to improve health care delivery.