Documento de Trabajo

A large firm model of the labor market with entry, exit and search frictions

I augment the standard large-firm matching model with a firm process of entry and exit. This extension requires the analysis of firm-level dynamics, which I present in this note. I also show the equivalence of the model with the one-worker firm model from Pissarides (2000).
JEL: J63.

Implementation with renegotiation when preferences and feasible sets are state dependent

In this paper, we present a model of implementation where infeasible allocations are converted into feasible ones through a process of renegotiation that is represented by a reversion function. We describe the maximal set of Social Choice Correspondences that can be implemented in Nash Equilibrium in a class of reversion functions that punish agents for

Optimal resource extraction contracts under threat of expropriation

The government contracts with a foreign firm to extract a natural resource that requires an upfront investment and which faces price uncertainty. In states where profits are high, there is a likelihood of expropriation, which generates a social cost that increases with the expropriated value. In this environment, the planner’s optimal contract avoids states with

Marginal Cost Pricing in Hydro-Thermal Power Industries: Is a Capacity Charge Always Needed?

This paper explores marginal cost pricing in hydro-thermal power industries. As in standard peak-load pricing for all-thermal electric systems, pricing consists of an energy charge and a capacity charge. However, the marginal cost of hydro generation now includes the value of water, which is determined endogenously. In turn, the capacity charge equals the marginal cost

What to put on the table

This paper investigates under which circumstances negotiating simultaneously over multiple issues or assets helps reduce inefficiencies due to the presence of asymmetric information. We find that a simultaneous negotiation over multiple assets that are substitutes reduces inefficiencies. The effect is stronger if goods are heterogeneous, and in this case the inefficiency can be eliminated altogether.

Estimating Discount Functions with Consumption Choices over the Lifecycle

Intertemporal preferences are difficult to measure. We estimate time preferences using a structural buffer stock consumption model and the Method of Simulated Moments. The model includes stochastic labor income, liquidity constraints, child and adult dependents, liquid and illiquid assets, revolving credit, retirement, and discount functions that allow short-run and long-run discount rates to differ. Data

The Basic Public Finance of Public-Private Partnerships

Public-private partnerships (PPPs) cannot be justified because they free public funds. When PPPs are desirable because the private sector is more efficient, the contract that optimally trades demand risk, user-fee distortions and the opportunity cost of public funds is characterized by a minimum revenue guarantee and a cap on the firm’s revenues. Yet income guarantees

Sustitución entre Telefonía Fija y Móvil en Chile

En este trabajo se estudia el grado de sustitución entre la telefonía fija y móvil en Chile. Los resultados muestran que la posesión de al menos un teléfono móvil en el hogar reduce el gasto promedio mensual en teléfono fijo en aproximadamente $5400 (31%). A pesar de lo anterior, el cambio estimado en el gasto

Note on Optimal Auctions

This paper considers a general optimal auction problem, with many goods and with a buyer’s utility that can depend non-linearly in his type. We point out that incentive compatibility constraints may be binding even if virtual utilities are strictly increasing in the buyer’s type. More importantly, optimal mechanisms may involve randomizations between different allocations.

The behavior of stock returns in the Asia-Pacific mining industry following the Iraq war

In this article, we pursue to determine which mining firms have seen their stock returns become more sensitive to fluctuations in energy prices, over a time period predominated by the political turmoil caused by 9/11 and the subsequent invasion of Iraq. By resorting to wavelets and spatial statistics, we characterize the behavior of volatility and

The Role of Outside Options in Auction Design

This paper studies revenue maximizing auctions when buyers’ outside options depend on their private information. The set-up is very general and encompasses a large number of potential applications. The main novel message of our analysis is that with type-dependent non-participation payoffs, the revenue maximizing assignment of objects can crucially depend on the outside options that

Multi-period hedge ratios for a multi-asset portfolio when accounting for returns comovement

This article presents a model to select the optimal hedge ratios of a portfolio comprised of an arbitrary number of commodities. In particular, returns dependency and heterogeneous investment horizons are accounted for by copulas and wavelets, respectively. We analyze a portfolio of London Metal Exchange metals for the period July 1993-December 2005, and conclude that