Participants endogenously generate a joint surplus by undertaking a real effort task, whose output is presumably useful to the experimenter independent of the bargaining data. They bargain over the surplus using an unstructured bargaining protocol without communication. I apply a 2X3 experiment design on this subjective claims paradigm. The production technology treatment manipulates how a bargaining pair's outputs are combined to generate the joint surplus, while the information treatment manipulates what participants know about their own and their partner's individual contributions to the joint surplus. I hypothesize that the distribution of allocations will be more varied, and frequency of disagreement will be higher, when participants' outputs are complements than when they are substitutes. As participants receive more information, the frequency of disagreement will reduce, and allocations will concentrate around some focal points.