The dynamics of parallel economies. Measuring the informal sector in Mexico

The existence of parallel economies that operate in the shadows of informality within most Latin American countries is widely recognized by the economic literature. However, its composition, size and effects on economic growth are still open questions. In this paper, we estimate the size and the evolution of the Mexican informal economy in the last three decades using a vector error correction model. In addition to the standard explanatory variables traditionally used in the currency demand approach, we include remittances given their relevance in the Mexican economic system. The results indicate that informality prior to the late 1980s accounted for at least two thirds of GDP, while stabilizing around one third of GDP in the last decade. Furthermore, our estimates provide evidence of a positive long-run relationship between informality and economic growth.     

Would you like to shrink the welfare state? A survey of European citizens

The fundamental problems facing European welfare states – high unemployment and unsustainable public pensions plans in particular – have been in the political debate for years, so why have we seen so little reform? To find out, we surveyed the opinions of citizens in France, Germany, Italy and Spain on their welfare states and on various reform options. This is what we found. First, most workers underestimate the costs of public pensions, though they are aware of their unsustainability. Second, the status quo is a majoritarian outcome: a majority of citizens opposes cuts to social security and welfare spending, but also opposes further increases. Since population ageing without reform implies an automatic expansion, our results suggest that most citizens would favour reforms that stabilize but do not shrink the current welfare states. Third, many would welcome changes in the allocation of benefits. A large number of workers in Italy and Germany would be willing to opt out of public pensions and replace them with private pensions, though the details of how this scheme is formulated matter for its popularity. And many Italians and Spaniards would welcome an extension of the coverage of unemployment insurance. Fourth, conflicts over the welfare state are mainly shaped by the economic situation of the respondent, while political ideology plays a limited role. Disagreements are found along three dimensions: young versus old, rich versus poor, and 'outsider' versus 'insider' in terms of labour market status. From a practical point of view, this suggests that there is scope to bundle reforms strategically in order to build a large and mixed coalition of supporters.
— Tito Boeri, Axel Börsch-Supan and Guido Tabellini     

HETEROGENEOUS LABOUR,SCARCITY AND CHOICE OF TECHNIQUES

A Sraffian model is presented in which commodities are produced by means of heterogeneous labour, and wages are (partially) determined by scarcity. Demand is explicitly taken into account, and therefore a “choice of techniques” perspective is adopted. It is shown that demand influences the choice of the cost-minimizing technique, and that the cost-minimizing technique may not always be unique. A dynamic extension of the model is briefly discussed. A numerical example illustrates how systems might behave over time.     

The ABC-LCA method for the integration of activity-based costing and life cycle assessment

This article presents an approach to integrating life cycle assessment (LCA) into an activity-based costing (ABC) model to develop a steering system that takes into account both financial costs and associated environmental impacts. By combining the formalism of LCA and ABC matrix calculations, we show how impact assessment results can be affiliated with costs to jointly and simultaneously compute the costs and environmental impacts of products and activities. The conditions of integration are developed following the four-step structure of LCA. The proposal is applied to a simplified case study of the ‘Classic Pen Company.’ The developed ABC-LCA approach paves the way for further test applications, which are considered useful in the context of environmental indicators for strategic steering, communication with customers and forecasting or simulation.     

Exporting firms and the demand for skilled tasks

This paper explores the link between exports and the demand for skilled tasks. Using the Chilean Encuesta Nacional Industrial Anual (ENIA), an annual census of manufacturing firms, we first show that Chilean exporters utilize more skills than Chilean non‐exporters. More importantly, we establish a distinct pattern of task differentiation among exporters both within skilled and unskilled tasks. Exporting firms demand the services of skilled specialized workers (engineers) as opposed to skilled administrative workers and managers. In addition, exporters demand less unskilled labour, especially blue‐collar operatives. This suggests that exporters substitute skilled engineers for unskilled blue‐collar workers to perform export‐related tasks.     

Difference in difference meets generalized least squares: Higher order properties of hypotheses tests

We investigate the estimation and inference in difference in difference econometric models used in the analysis of treatment effects. When the innovations in such models display serial correlation, commonly used ordinary least squares (OLS) procedures are inefficient and may lead to tests with incorrect size. Implementation of feasible generalized least squares (FGLS) procedures is often hindered by too few observations in the cross-section to allow for unrestricted estimation of the weight matrix without leading to tests with similar size distortions as conventional OLS based procedures. We analyze the small sample properties of FGLS based tests with a formal higher order Edgeworth expansion that allows us to construct a size corrected version of the test. We also address the question of optimal temporal aggregation as a method to reduce the dimension of the weight matrix. We apply our procedure to data on regulation of mobile telephone service prices. We find that a size corrected FGLS based test outperforms tests based on OLS.     

CES and Translog parameter estimates in a SAM-based regional general equilibrium framework

The computation of General Equilibrium models crucially depends on Social Accounting Matrix (SAM)-based calibration and on how estimation/imputation are performed to reproduce the benchmark dataset as an equilibrium solution. In this paper, theoretical contributions are provided by suggesting a new procedure in which the production function parameters and the elasticity of substitution are estimated by resorting to the data contained in the SAM. To this aim, the Generalized Cross-Entropy estimator is used. Application of this self-contained procedure to the regional SAM for the Italian region Tuscany leads to empirical results consisting of the estimates of the elasticities of substitution of Constant Elasticity of Substitution and Translog production functions consistent with the theoretical background. This yields a more efficient and effective solution of Computable General Equilibrium models.     

Assessing adaptive capacity of water management organizations. The case study of the municipality of Tomave (Bolivia)

Climate change is only one of several pressure and drivers, such as natural disasters, improvements in technologies and changing customers’ behaviors that water organizations have to relate and adapt to. This places new challenges (e.g. dealing with increased exposure, vulnerability, and uncertainty) to water management and require water organizations to change their perspective on how to deal with water issues. This paper builds on a literature review to identify dimensions and criteria of adaptive capacity and presents a conceptual framework to assess organizational adaptive capacity. The developed framework has been tested within the Municipality of Tomave (Bolivia). The paper results emphasize the incapacity to transform routines as the context is changing leads to the construction of barriers and to the inability of an organization to support the process of change of the society. In addition, the study emphasis that the development of a working system based on cooperation requires first that an organization acquires skills and adapt its routines to the new working system. Furthermore, the development of a participatory process of planning and implementation of policies would help to reduce the trade-offs and conflicts related to water management. Linked to this, the development of a system for monitoring and evaluation of policies implemented organization can contribute to build an iterative mechanism so to allow a redefinition and improvement of such policies.