The goal of this chapter is to present new ways of conceptualizing family-supportive supervisor behaviors (FSSB), and to present a multilevel model reviewing variables that are linked to this construct. We begin the chapter with an overview of the U.S. labor market's rising work–family demands, followed by our multilevel conceptual model of the pathways between FSSB and health, safety, work, and family outcomes for employees. A detailed discussion of the critical role of FSSB is then provided, followed by a discussion of the outcome relationships for employees. We then present our work on the conceptual development of FSSB, drawing from the literature and from focus group data. We end the chapter with a discussion of the practical implications related to our model and conceptual development of FSSB, as well as a discussion of implications for future research.