URL des Documents de travail : http://centredeconomiesorbonne.univ-paris1.fr/bandeau-haut/documents-de-travail/Documents de travail du Centre d'Economie de la Sorbonne 2012.13 - ISSN : 1955-611XIn this paper, we present a non-cooperative wage bargaining model in which preferences of both parties, a union and a firm, are expressed by sequences of discount factors varying in time. We determine subgame perfect equilibria for three cases when the strike decision of the union is exogenous : the case when the union is supposed to go on strike in each period in which there is a disagreement, the case when the union is committed to go on strike only when its own offer is rejected, and the case when the union is supposed to go never on strike.Dans c...