My dissertation examines the social experience of time during crucial transitions over the adult life course. I ask: First, when, how and why does time scarcity emerge, and how is it shaped by sociodemographic factors? This introduces the important idea of temporal inequality. Second, what are the consequences of time scarcity for well-being? Third, what are the discursive frames deployed to characterize temporal scarcity before, during and after life transitions? By conceptualizing time as a fluid, network-based, relational process — grounded in the lived experiences of individuals as they navigate different geographic, economic, institutional and familial contexts — my work looks at how time scarcity is experienced, negotiated and internalized through everyday interaction. I seek to contribute to sociological theory by uncovering the mechanisms that link sociotemporal disparities to inequalities in well-being. Through a careful utilization of a mixed-methods approach, my research connects the individual-level subjective experience and social patterning of time with sociodemographic, institutional and neighborhood-level factors, informing the literature on stratification and social inequality.