In the first chapter, I examine the impact of the “indirect links” in which the buyer is connected to the supplier through a third actor. I propose a conceptual framework that specifies how the indirect links can overcome agency problems through the effects of information exchange, mutual monitoring, power change, and network governance. These different effects are enabled by the indirect links based on the different network positions and levels of connectivity of the third actor. The first chapter provides a theoretical framework for Chapter 2 and 3.
In Chapter 2, the effect of network governance enabled by the indirect links is investigated. In particular, two scenario-based role-play experiments were conducted with managers to examine the effects of dyadic and network governance mechanisms on supplier opportunism. In Study 1, the participants took the perspective of a supplier, while in Study 2, the participants took the role of a buyer. The results show that network governance mechanism reduces the supplier's opportunistic behavioral intentions directly and indirectly through the negative affection prediction, and while suppliers may overlook the buyer's reactions as they make decisions, the buyers are likely to react against the supplier, such as engage in negative word-of-mouth or reduce level of commitment.
Finally, directed sourcing, a direct application of how a buyer could overcome agency problems beyond the dyad, is examined in Chapter 3. Directed sourcing is an emerging sourcing practice in which the buying firms bypass the top-tier suppliers and directly manage or contract with lower-tier suppliers, and research on this new practice is in its infancy. Therefore, multi-tier multi-task principal-agent models are developed to investigate the effect of directed sourcing practice on each member in this three-tier supply chain, comparing with traditional tiered sourcing. The results show that directed sourcing generally benefits the original equipment manufacturer (OEM) and the lower-tier supplier, while it harms the top-tier supplier. Yet, directed sourcing is not always beneficial to the OEM. Therefore, an OEM should be selective in implementing this new strategy.
Warehouse workers are critical to the success of any business and supply chain. It is important to understand different factors that can influence an employee's performance and satisfaction at work. In order to determine some best practices, 173 students at Arizona State University participated in an online warehousing simulation in a controlled laboratory setting. Participants were subject to different combinations of time pressure and put-away errors (i.e. when items that need to be picked by a warehouse worker are not located where they are supposed to be). A preliminary analysis shows that the largest impact is that of time pressure on worker productivity. As time pressure increases, the time required to complete a task decreases. The trade-offs of using time pressure as a management option are discussed.