This research validates 24 work system principles that emerged from the effort to develop the work system method, whose goal is to help business professionals understand and analyze systems in organizations in their own terms, and also to help bridge the communication gaps that have undermined IS projects and reduced business/IT alignment. The research validates the principles based on questionnaire responses submitted by six cohorts of Executive MBA students, who rated each of the work system principles on two criteria: 1) normatively, to what extent should work systems in their organizations conform to each principle, and 2) descriptively, to what extent do most existing work systems in their organizations actually conform to each principle. An analysis of the results reveals statistically significant gaps between their perceptions of normative principles and their perceptions of how well typical work systems operate in organizations. The findings are statistically significant for all 24 principles.