Jobs that require work outside the traditional daytime hours of approximately 8 AM to 6 PM have become ubiquitous across economically developed nations, but extensive research shows that shift work and long work hours may compromise employee health. Although employers recognize the potential harmful effects of shift work, many argue in favor of maintaining it, citing the nature of the work requiring a 24/7 schedule (e.g., public safety), maximization of production capacity in response to consumer demand, and in some cases, employee preference for long shifts to maximize days off and pay. In recent publications, P4A researcher Megan McHugh, doctoral student Adovich Rivera, and their colleagues from Northwestern’s Manufacturing and Health Research Program provide evidence on how shift work affects the incidence of chronic illness and overall worker well-being.<.p>