Exxon Corporation v. Esso Workers' Union, Inc. , 118 F.3d 841 ( 1997 )
Litvak Packing Company v. United Food and Commercial Workers, Local Union No. 7 , 886 F.2d 275 ( 1989 )
United Steelworkers v. Enterprise Wheel & Car Corp. , 80 S. Ct. 1358 ( 1960 )
United Paperworkers International Union v. Misco, Inc. , 108 S. Ct. 364 ( 1987 )