Abstract : The Information Technology and Communication (ICT) are now part of everyday work for most employees. The executives are the employees being the most equipped with mobile ICT by their employers : their activity is mostly realized from the mediation of communicative devices. Such equipments grants them new opportunities: especially the one that is to unchain themselves from the space-temporal dimension staying connected with work, and the other that allows a larger modulation of their use of time. Faced with their work reconfiguration how do these executives react? The main purpose of this PhD research aims at accompanying the verbalization of ICT’s everyday practice in order to understand the psychosocial issue of this equipment and to identify possible resources to cope with. Convening a cross approach between Information Science and Communication and Work of Psychology, we focus on the live experience of executives about the technological mediation of their work. The methodology used is both qualitative and longitudinal. Favouring a biographical approach, first extensive interviews complemented with the Critical Incident Technique, were conducted among a sample of 62 executives exercising their functions in a French region, Aquitaine (T0); and then reiterated one year later (T1). The major outcome of our analyses highlight: the mediating role of ICT about psychosocial risks at work; connection / disconnection strategies are self willing deployed to optimize not only the use of ICT but also the quality of life; the discontinuous character of ICT’s appropriation demonstrated by the experience of significant events; but also reflexivity’s effect of practices initiated at the first interview.