This paper analyzes the impact of guaranteed minimum price contracts between sub-groups of farmers and a fair trade manufacturer on the spot market price. We focus on the fair trade concept in the coffee supply chain as an example. We analyze a three level vertical chain gathering perfectly...

We analyse a vertical chain with perfectly competitive farmers who offer raw products on a spot market to manufacturers who resell the finished goods to a distributor. Absent Fairtrade, the entire raw product is sold on the spot market. A Fairtrade organisation can offer to part of farmers a...

This article is a theoretical contribution to the debate surrounding the introduction of Fair Trade products into large-scale retail distribution. In the model, a Fair Trade certifier and a traditional producer compete to supply their product to a single retailer, consumers who are Fair Trade...

We analyse a vertical chain with perfectly competitive farmers who offer raw products on a spot market to manufacturers who resell the finished goods to a distributor. Absent Fairtrade, the entire raw product is sold on the spot market. A Fairtrade organisation can offer to part of farmers a...

Cet article s'intéresse à l'évolution du concept de commerce équitable. Nous proposons un modèle simple en vue de donner des arguments théoriques dans le débat sur la vente de produits équitables dans la grande distribution. L'hypothèse principale est que certains consommateurs sont...

This article analyzes the impact of Fair Trade contracts between sub-groups of farmers and a Fair Trade organization on the spot market price. We analyze a three level vertical chain gathering perfectly competitive farmers upstream who offer their raw product on a spot market to manufacturers...

This paper presents a model of a vertically organized distribution network of illicit drugs with traffickers and retailers. The key assumption is the non-linear transactions costs related to the risk undergone by drugs sellers.

L'auteur présente ici l'évolution des politiques publiques en matière de drogues, en mettant en évidence l'introduction progressive des arguments économiques dans l'analyse. Après des siècles de production et de consommation, quelques substances psychoactives ont été peu à peu...

Cet article s’attache à donner des fondements théoriques à la structure verticale des réseaux de distribution des drogues illicites, en faisant appel à l’analyse des relations verticales et en intégrant le caractère illégal de cette activité. Il analyse ensuite la manière dont les...