The article views the classical model as inconsistent with both the inherent discretionary power of correctional officers and the operational realities of prison work. Further, the classical model fails to guide correctional officers in the exercise of their discretionary power. The article develops a conceptual basis for understanding individual discretionary power using Muir's typology (1977) of police work styles (i.e., professionals, enforcers, reciprocators, and avoiders); compares behavioral descriptors of these work styles for police and correctional officers; and provides a plausible theoretical basis for generalizing from Muir's typology of police work styles to correctional officers. In addition, the article presents the philosophical and theoretical foundations for the exercise of bounded discretionary power by government officials, along with a general model of discretionary behavior, and draws several inferences for the future of prison administration. Notes, tables, references