discussed Cited "see, e.g." Smyth v. Pillsbury Co. Absent legislation, the judiciary must define the cause of action in case by case determinations.” Borse, 963 F.2d at 619, n. 6 (3d Cir.1992) quoting Cisco v. United Parcel Services, Inc., 328 Pa.Super. 300, 306 , 476 A.2d 1340, 1343 (1984); Krajsa v. Keypunch, Inc., 424 Pa.Super. 230 , 622 A.2d 355, 358 (1993); see also, Smith v. Calgon Carbon Corp., 917 F.2d 1338, 1344 (3d Cir.1990), cert. denied, 499 U.S. 966 , 111 S.Ct. 1597 , 113 L.Ed.2d 660 (1991) (“[A] ‘clear mandate of public policy’ *100 [is] embodied in a constitutionally or legislatively established prohibition, requirement,…