Bargaining with endogenous disagreement: the extended Kalai-Smorodinsky solution

Following Vartiainen (2007) we consider bargaining problems in which no exogenous disagreement outcome is given. A bargaining solution assigns a pair of outcomes to such a problem, namely a compromise outcome as well as a disagreement outcome: the interpretation is that the latter results if the compromise outcome is not accepted. For this framework we propose and study an extension of the classical Kalai-Smorodinsky bargaining solution. We present a characterization with an axiom of Independence ofNon-Utopia Information as the main condition.