A firm with stochastic demand can rely on hired hands when demand is low and rent additional labour when demand is higher. For high demand this implies the co-employment of hired hands, paid directly by the firm, and of rented hands who are paid by a rental agency. This may cause severe problems...

To commit credibly in bargaining is crucial: In the ultimatum game with its one-sided early commitment power the “proposer” gets (nearly) the whole pie while the “responder” is left with (almost) nothing. When both parties commit simultaneously the (a)symmetric Nash(1950)-bargaining...