LOS ANGELES - A former transportation supervisor failed to show that all employees with that title had the same duties and that a class action is the superior method to adjudicate the employees' wage-and-hour claims, a California federal judge ruled Aug. 22 (Curtis Hamilton, et al. v. Genesis Logistics, Inc., No. 13-1848, C.D. Calif.; 2014 U.S. Dist. LEXIS 117607).