主讲人：张灿
时间：2023年6月14日 09:00
地点：逸夫楼621
报告题目：农产品的可持续采购：固定溢价与弹性溢价
报告摘要
Abstract:Sustainability certifications have gained increasing popularity for the sourcing of agricultural products. In order to help smallholder farmers achieve a living income, an important lever these certifications use is a premium that manufacturing firms pay to certified farmers on top of the market price. A popular premium approach that has been implemented by several major certification programs is the so-called fixed premium, under which farmers receive a fixed level of premium independent of the market price. Although a fixed premium approach is simple, it has been criticized for not protecting farmers from low market prices. An alternative approach called flexible premium has been widely advocated and considered by some most recent certifications; under this approach, farmers receive a higher level of premium when the market price is lower. In this paper, we analyze and compare the effectiveness of these two premium approaches. Our analysis offers several insights. First, although the flexible premium approach is intuitively appealing and has been widely advocated, we show that it does not necessarily help improve the expected farmer income compared to fixed premium. Moreover, we show that even when flexible premium improves farmer income, it may lead to a lower expected sustainable sourcing quantity and a lower expected firm profit. Nevertheless, we also show that flexible premium can lead to ``win-win-win'' outcomes for farmer income, sustainable sourcing quantity, and firm profit in supply-ample, demand-constrained settings. Finally, motivated by the increasing number of sustainability labels created by manufacturing firms, we study the choice of premiums under such self-labeling and compare the equilibrium outcomes with those under NGO labeling. We show that although self-labeling leads to lower expected premium level, it can lead to higher expected sustainable sourcing quantity than NGO labeling.
主讲人简介
张灿，美国杜克大学福库商学院运营管理专业助理教授，主要研究社会责任与非营利组织可持续运营，在医疗和农产品供应链领域颇有建树，相关论文发表在OR、MSOM、POM等国际顶刊，并且他的研究曾获多项奖项，包括MSOM最佳论文、MSOM运营管理社会责任研究最佳论文。
