Cette thèse vise à étudier conjointement deux thèmes de recherche habituellement traités séparés par la littérature académique : les caractéristiques des directeurs généraux et l'engagement des employés au travail. La problématique peut se définir ainsi : quel est l'impact des caractéristiques des dirigeants sur leur engagement au travail ? ou autrement dit, comment les caractéristiques managériales influencent la nature et le degré d'implication des dirigeants au travail? Les dirigeants dans notre travail de recherche seront les dirigeants des banques au Liban : on va essayer de leur créer une typologie. / Organizational commitment has been studied comprehensively along with varied professional groups. The concept that commitment is essential for the apprehension of organizational and professional goals mainly in the Banking organizations has remained unexploited by researchers. The study of employee commitment should be important to Banking organizations receiving large amounts of community savings and playing an important role in the development of the economical sector as a whole.No previous studies have tackled the Lebanese bank managers’ subject in relevance to their organizational commitment and its relation with their biographical traits and their Job perforamance; therefore the study of organizational commitment will particularly be relevant to Lebanese bank managers, as those represent the leading power for the future of the Lebanese banking sector.

<p>Using a social exchange perspective I develop a relationship typology based upon an organizational member’s psychological investments, or “side bets,” in his or her organization. This study thus examines, for the first time in the employee-organization exchange relationship (EOR) literature, the combined impact of perceptions that organizational members have with respect to their perceived social and economic investments in their organization. Specifically, outcomes of four unique EOR profiles are examined: “loyalist” (high social, high economic); “altruist” (high social, low economic); “captive” (low social, high economic); “mercenary” (low social, low economic). In a matched sample of 334 working professionals (167 employees matched with their corresponding supervisors), the hypotheses of this study are largely supported. Altruists are highest in their perceptions of organizational support, followed in descending order by the loyalists, mercenaries, and captives. Also as predicted, altruists are highest in affective commitment, followed in descending order by the loyalists, captives, and mercenaries. In terms of continuance commitment, contrary to prediction, loyalists have the highest levels of continuance commitment; however, as predicted, captives have higher levels than altruists and mercenaries. Altruists, as predicted, have the highest level of OCB, followed in descending order by loyalists, mercenaries, and captives. Finally, as predicted, mercenaries have the highest level of task performance followed in descending order by altruists, loyalists, and captives. Theoretical and practical considerations of these findings are discussed.</p> / Doctor of Philosophy (PhD)