A study examined a contingency model involving the factors of task characteristics, structural characteristics, organizational relationships, and communication processes and their respective components in regard to their relationships to job performance and their ability to predict job performance. Data were gathered from approximately 190 members of 28 different task units within a state service-regulatory agency. Supervisors of each unit completed a questionnaire concerning task uncertainty, interdependence, standardization, formalization, autonomy, and centralization. Results indicated that the most important communication processes subcomponent correlating with performance was quality of information processed. The three organizational relationships of coworkers, supervisors, and upper middle management significantly correlated with the communication process variable of action taken on processed information. Interrelationships between organizational structure and task characteristics were found among the variables of interdependency, formalization, and standardization, while a negative correlation was found between information received and centralization. A post hoc regression analysis revealed that the factor of organizational relationships and one subcomponent of structural characteristics--autonomy--were the best predictors of job performance. (Author/FL)