The purpose of this paper is to define situations where managers make ethical autonomous choices. These ethical choices are « deleuzian » events since they are contingent, out of any planification, and expressions of the self. Interviews with managers belonging to a pharmaceutics firm and to a global firm of outdoor sports equipment illustrate this theoretical framework. These illustrations suggest to represent business ethics construction as a dynamic process made of a succession of events which endlessly actualise the routinized ethical practices of the organization through interaction between manager’identities and organizational rule.