Calendrier du 01 mars 2021
Paris Migration Seminar
Du 01/03/2021 de 17:30 à 18:15
PORCHER Charly (Dartmouth College)
Migration with Costly Information
Information is critical for migration decisions. Yet, depending on where they reside and who they interact with, individuals may face different costs of accessing information about employment opportunities. How does this imperfect and heterogeneous information structure affect the spatial allocation of economic activity and welfare? I develop a quantitative dynamic model of migration with costly information acquisition and local information sharing. Rationally inattentive agents optimally acquire more information about nearby locations and learn about other locations from the migrants around them. I apply this model to internal migration in Brazil and estimate it using migration flows between regions. To illustrate its quantitative implications, I evaluate the counterfactual effects of the roll-out of broadband internet in Brazil. By allowing workers to make better mobility choices, expanding internet access increases average welfare by 1.6%, reduces migration flows by 1.2% and reduces the cross-sectional dispersion in earnings by 4%.
Régulation et Environnement
Du 01/03/2021 de 12:00 à 13:15
online
MOLINA Hugo (INRAE)
Buyer Alliances in Vertically Related Markets
Alliances of buyers to negotiate input prices with suppliers are commonplace. Using pre- and post-alliances data on household purchases of bottled water, I develop a struc tural model of bilateral oligopoly to estimate the effects of alliances formed by retailers on their bargaining power vis-à-vis manufacturers and retail prices paid by consumers. Results provide evidence of a countervailing buyer power effect that reduces retail prices by roughly 7%. Exploring determinants of buyer power, I find that changes in retailers’ bargaining ability play an important role in the countervailing force exerted by buyer alliances which, absent this effect, would have harmed retailers.