This paper's purpose is to define as clearly as possible the law that best fits business torts which bring into play two or more systems of law. The definition of "tort" being another field in which scholarly activity has not led to a consensus, and the qualification of "business tort" considerably adding to the vagueness of the subject, it is sufficient here to state that the thrust of this analysis is on choice-of-law problems. But in order to test the resulting rule or method cases will be selected both from the frequent tort cases arising out of accidents and from those which typically involve business organizations as defendants. This broad statement is permissible because of the limited scope of and the emphasis on methodology in this paper.