Nash bargaining and renegotiation with social preferences: case of the roundwood log supply contracts in the French timber market

摘要

By considering the French forest-based sector, we study both negotiation and renegotiation between a public timber and roundwood log supplier, which can be either public-interest-oriented or profit-maximizing, and a profit-maximizing lumber manufacturer. We first prove that the Nash bargaining game yields a unique equilibrium log supply contract, at which the negotiation takes only place on the prices. We then find that the expected profit-maximizing is achieved when the supplier's public interest and the manufacturer's bargaining power are strategic substitutes. The renegotiation reveals the presence of a memory effect over the quantities issued from bargaining. Our results can be generalized to all economic settings that revolve around public interest and commodity risk management. (C) 2016 Elsevier B.V. All rights reserved.