A study examined variation in code choice in the same speakers in two contrasting situations--interorganizational and intraorganizational bargaining. Naturalistic interactions between teams of teacher's union bargaining agents, role-playing teachers, and school board members in the two settings were coded, using measures of structural and lexical complexity, solidarity, and formality of structure, as well as indices of personal reference. Discriminant analysis revealed that a set of structural and lexical variables accounted for significant differences in the structuring of the two types of interactions. The two situations were also found to differ in expressions of solidarity and in structural cues. (An extensive bibliography and tables of data are appended. (Author/FL)