摘要:Using qualitative data collection methods, this article investigates the characteristics of the repeated transaction between a plastic manufacturer and its key supplier of injection molds in order to pin down the effects of the properties of this transaction on the firm’s uncertainty perceptions. Furthermore it aims to explore the impact of these perceptions on the firm’s choice of transaction structure. The main finding suggests that – despite the vulnerability stemming from the relatively high level of asset specificity – the firm is rather reluctant to integrate this transaction flow and prefers instead to organize it in form of a long-term, non-contractual, trust-based relation with the supplier. The rationale for this preference is two-folded: On the one hand a backward integration is perceived as a source of increased uncertainty and vulnerability rather as an assuring shield against risks and hazards; on the other hand, the existing and well-functioning relation with the mound supplier performs the most important functions of vertical integration, and it does so without the costs and uncertainties involved in such a move.