Ashley Nunes1, Sam Harper1, Kristen D Hernandez1. 1. Ashley Nunes is with the Labor and Worklife Program, Harvard Law School, Cambridge, MA. Sam Harper is with the Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, Canada. At the time of the study, Kristen D. Hernandez was with the Center for Transportation & Logistics, Massachusetts Institute of Technology, Cambridge.