Definition of For cause
With respect to removal from office "for cause”, means for reasons which law and public policy recognize as sufficient warrant for removal and such cause is "legal cause” and not merely a cause which the appointing power in the exercise of discretion may deem sufficient. State ex rel. Nagle v. Sullivan, 98 Mont. 425, 40 P.2d 995, 998. They do not mean removal by arbitrary or capricious action but there must be some cause affecting and concerning ability and fitness of official to perform duty imposed on him. The cause must be one in which the law and sound public policy will recognize as a cause for official no longer occupying his office. Napolitano v, Ward, D.C.I11., 317 F.Supp. 79, 81.
That's the definition of For cause in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.