Recent work has established that the gradient of life expectancy with respect to wealth is large and widening. We make three contributions to build on that result using two recent decades of data from the United States. First, the additional years are in healthy, disability-free years,...

Little is known about how people-centric factors affect the shape of service time distributions, despite distributional statistics (variance or quantiles) being key drivers of system performance in many service industries. We investigate the impact of one people-centric factor--worker...