Unionized oligopoly and vertical integration

Labor market structures may have important effects on imperfectly competitive rivalries between firms. This paper examines the consequences of unionization for the rivalry between duopoly firms in two types of contracts: vertical integration and vertical separation. If a franchise fee is used to extract the retailer’s profit, then it is in the individual interest of each manufacturer to choose vertical separation and charge his retailer a wholesale price in excess of the unit production cost, depending on the specific time structures. These arguments could make integration preferable for the manufacturer if the wage bargaining power of the union is relatively powerful.