...Peggy Young, a United Parcel Service employee...was put on unpaid leave when she became pregnant in 2006. The Supreme Court hears her case -- a challenge to the UPS policy -- [today]...The case...revolves around the Pregnancy Discrimination Act...which require[s] that employers treat pregnant women the same way that they treat non-pregnant employees with similar abilities or disabilities...[A] Supreme Court ruling in support of Young could have significant implications [and] would...give employers -- and the court system -- more guidance as to their responsibilities...[A decision in the case is expected to be issued in 2015]