Les inégalités de revenus et la polarisation de l'emploi ont augmenté dans plusieurs pays au cours des dernières décennies, suscitant des préoccupations d'équité ainsi que des interrogations concernant les politiques de redistribution. Cette thèse répond à deux questions primordiales. La première concerne le rôle des heures travaillées et de leur dispersion pour expliquer les inégalités de revenu; la seconde porte sur le rôle de l'offre de travail des femmes dans l'explication de la polarisation de l'emploi. Le premier chapitre utilise des données pour les États-Unis, le Royaume-Uni, l'Allemagne et la France et examine comment les inégalités de revenu sont affectées par la dispersion des heures de travail. Le principal enseignement de cette approche est que la dispersion des heures de travail peut expliquer plus d'un tiers des inégalités de revenu dans certains pays et que la corrélation entre le salaire horaire et les heures travaillées s'est accrue au fil du temps. Le second chapitre s'appuie sur les résultats du précédent et explore les mécanismes qui expliquent la tendance à la hausse de la corrélation entre salaires et heures travaillées. Nous constatons qu'une plus grande volatilité de la production agrégée et une réglementation plus stricte du marché du travail ont tendance à réduire l'élasticité, alors qu'une augmentation du commerce dans un secteur les augmente. Enfin, le troisième chapitre met l'accent sur le rôle des femmes hautement qualifiées dans l'évolution du marché des substituts de la production domestique et montre que, lorsque les femmes hautement qualifiées travaillent plus d'heures, les femmes moins qualifiées sont plus susceptibles d'être employées. / Earnings inequality and job polarization have increased in a number of countries during the last decades, raising concerns of fairness and fostering debates on the implications for redistributive policies. This thesis asks two main questions. The first concerns the relevance of hours worked and their dispersion for earnings inequality, while the second question investigates the role of female labour supply in explaining the increase in job polarization. The first chapter uses data for the USA, the UK, Germany, and France and examines how earnings inequality is affected by the dispersion of working hours. The main result of this exercise is that hours dispersion can account for over a third of earnings inequality in some countries and that the relevance of the correlation between wages and working hours has been growing over time. The second chapter builds on the results of the previous one and explores the forces behind the upward trend of the correlation between wages and working hours. We find that greater aggregate output volatility and stricter labour market regulation tend to reduce the elasticity, while a greater trade share in an industry raises it. Finally, the third chapter investigates the relevance of female employment for job polarization in Germany. The analysis focuses on the role of high-skilled females in the evolution of a market for home production substitutes and finds that when top-employed females work more hours, low-skilled women are more likely to be employed.

First chapter aims to quantify the role of trade in capital goods in cross country income differences. I construct a multi-country general equilibrium model of trade along the line of Eaton and Kortum (2002) and Alvarez and Lucas (2007) and introduce trade in capital goods and capital accumulation. In this framework, comparative advantage and the costs of international trade determine the pattern of production, specialization, and trade. I calibrate the model for 53 countries by estimating trade barriers and calibrating productivity parameters to match the bilateral trade data in 1996. The model is used to analyze full trade liberalizations. I find that removing barriers on investment goods accounts a large portion of reducing cross-country income differences and welfare gain. Counterfactual exercises suggest that developing countries gain relatively more than developed countries. In the second chapter, I focus on the impact of free trade on exportimport ratios in two different sectors. I employ a multi-country general equilibrium model of bilateral trade patterns along the line of Eaton and Kortum (2002) and Alvarez and Lucas (2007). I calibrate the model for 20 countries by estimating trade barriers and calibrating productivity parameters to match the bilateral trade data in 1996. The model is used to analyze full trade liberalizations. The impacts of free trade are predicted to be an increase in the export-import ratios in the comparative advantage sector and a decline in the comparative disadvantage sector, on average. In developing countries the average percentage change in export-import ratios exceeds the average percentage change in export-import ratios in developed countries. Finally, in the third chapter, I focus on the intergenerational human capital transmission. I develop and calibrate a theoretical model that considers three mechanisms of intergenerational transmission of human capital: (i) persistence in learning ability; (ii) parental investment in child’s human capital; (iii) higher teaching productivity of parents with more human capital. Within this framework, I find that (i) and (ii) plays important roles while (iii) does not. In addition the model generates the documented fact that higherwage parents spending more time teaching their children in spite of the higher opportunity cost. I asses the role of nature and nurture effects in intergenerational persistence of earnings and I find that nature accounts a large portion of the intergenerational persistence in earnings. I also quantify the relative importance of these mechanisms on wage inequality. / text

<p>Diss. Stockholm : Handelshögskolan, 2007</p>

Submitted by Amanda Cappellazzo Arabage (amanda_arabage@msn.com) on 2013-06-11T18:18:08Z No. of bitstreams: 1 Dissertação - Amanda Arabage.pdf: 2257979 bytes, checksum: 53712e3dfdc43c2acc992b86c428c1ef (MD5) / Approved for entry into archive by Suzinei Teles Garcia Garcia (suzinei.garcia@fgv.br) on 2013-06-11T19:48:47Z (GMT) No. of bitstreams: 1 Dissertação - Amanda Arabage.pdf: 2257979 bytes, checksum: 53712e3dfdc43c2acc992b86c428c1ef (MD5) / Made available in DSpace on 2013-06-11T20:19:22Z (GMT). No. of bitstreams: 1 Dissertação - Amanda Arabage.pdf: 2257979 bytes, checksum: 53712e3dfdc43c2acc992b86c428c1ef (MD5) Previous issue date: 2013-05-27 / Neste trabalho estudamos a evolução da desigualdade de salários no mercado formal de trabalho no Brasil utilizando dados da Relação Anual de Informações Sociais (RAIS) no período entre 1994 e 2009. Utilizamos a variância do log do salário real por hora contratual de trabalho como medida de desigualdade e, através do uso de métodos de decomposição da variância em seus componentes permanente e transitório, verificamos que, no Brasil, cerca de 84% da desigualdade é explicada pelo componente permanente, ou seja, por características individuais invariantes no tempo. A educação responde por uma parcela expressiva deste componente (54% em média). Ao longo do período em questão houve uma redução da desigualdade de salários, sendo esta explicada pela redução do componente transitório entre 1994 e 1998 e pela diminuição do componente permanente entre 1999 e 2009. / This study analyzes the evolution of wage inequality in the formal labor market in Brazil in the years 1994-2009 using administrative data (RAIS). We use the variance of log hourly wages as a way to access wage inequality. Decomposing variance into its permanent and transitory components, we find that 84% of Brazilian wage inequality is due to its permanent component, in other words, it can be explained by individual characteristics that do not change over time. Regarding this permanent component, we show that education responds to approximately 54% of it. From 1994 to 2009, Brazil experienced a reduction in wage inequality. This reduction was caused by a decrease in the transitory component from 1994 to 1998 and by a decrease in the permanent component from 1999 to 2009.

Submitted by Ignacio Rey (ignacio.crespo12@gmail.com) on 2013-06-20T16:02:43Z No. of bitstreams: 1 Dissertação.pdf: 1892087 bytes, checksum: 9b69116ff77d99edaa98675b0553f14c (MD5) / Approved for entry into archive by Marcia Bacha (marcia.bacha@fgv.br) on 2013-06-27T12:13:35Z (GMT) No. of bitstreams: 1 Dissertação.pdf: 1892087 bytes, checksum: 9b69116ff77d99edaa98675b0553f14c (MD5) / Made available in DSpace on 2013-06-27T12:13:55Z (GMT). No. of bitstreams: 1 Dissertação.pdf: 1892087 bytes, checksum: 9b69116ff77d99edaa98675b0553f14c (MD5) Previous issue date: 2013-06-12 / The aim of this paper is to understand more about the role of trade liberalization on wage inequality, more precisely, on the residual wage inequality. Using the Brazil- ian trade openness, the large tari cuts that occurred between 1987 and 1995, it is empirically investigated whether di erent levels of exposure to trade across states contributed to the di erent inequality movements. Results indicate that states more exposed to trade liberalization experienced a relative increase in residual wage in- equality or, equivalently, a smaller decrease. These ndings enrich the discussion on the e ects of trade openness on inequality. / O objetivo deste trabalho é entender mais sobre o papel da liberalização sobre a desigualdade salarial, mais precisamente, sobre a desigualdade residual dos salários. Usando a abertura comercial brasileira, a extensa redução tarifária que ocorreu entre 1987 e 1995, é investigado empiricamente se os diferentes níveis de exposição ao comércio entre os estados contribuíram para os diferentes movimentos da desigualdade. Os resultados indicam que estados mais expostos à liberalização comercial experimentaram um aumento relativo da desigualdade residual dos salários ou, de forma equivalente, uma menor redução. Estes resultados enriquecem a discussão dos efeitos da abertura comercial sobre a desigualdade.

We set up a trade model with heterogeneous firms and a worker population that is heterogeneous in two dimensions: workers are either skilled or unskilled, and within each skill category there is a continuum of abilities. Workers with high abilities, both skilled and unskilled, are matched to firms with high productivities, and this leads to wage differentials within each skill category across firms. Self-selection of the most productive firms into exporting generates an exporter wage premium, and our framework with skilled and unskilled workers allows us to decompose this premium into its skill-specific components. We employ linked employer-employee data from Germany to structurally estimate the parameters of the model. Using these parameter estimates, we compute an average exporter wage premium of 5 percent. The decomposition by skill turns out to be quantitatively highly relevant, with exporting firms paying no wage premium at all to their unskilled workers, while the premium for skilled workers is 12 percent.

Cette thèse porte sur l’étude des inégalités dans un cadre macroéconomique, d’un point de vue théorique ainsi qu’empirique. Dans un premier chapitre, j’écris et simule un modèle basé-agents capable de répliquer les distributions fat-tailed des richesses observées empiriquement dans les économies développées. Dans un second chapitre, je prolonge ce modèle théorique pour étudier l’impact économique des discriminations interpersonnelles et institutionnelles. Lorsque les discriminations institutionnelles cessent, l’état final des inégalités dépend de l’économie au moment de la fin de ces discriminations : plus l’économie est organisée, plus le temps nécessaire à une égalisation des revenus et richesses entre ethnies est long, voire infini. Dans un troisième chapitre empirique, j’étudie l’évolution des inégalités de salaire entre Noirs et Blancs aux États-Unis entre 1960 et 2015, en me concentrant sur la période 2000-2015. Je traite les biais de sélection liés à l’asymétrie raciale envers l’emprisonnement, et montre que l’écart - en conditionnant par l'âge et les diplômes - entre salaires médians des Noirs et des Blancs atteint un maximum en 2012. En utilisant la méthode de régression quantiles non-conditionnelles conjointement avec la décomposition de Blinder-Oaxaca, j’établis que la part non-expliquée de cet écart reste stable durant la Grande Récession. Enfin, dans une post-face, en utilisant les métadonnées de RePEC, j’établis que la part des articles scientifiques consacrés à l’étude des crises augmente significativement après 2008 pour 13 des 30 « top journals » en économie. / This PhD dissertation focuses on wealth and wage inequality, and the macro-economy. In a first chapter, I write and run a small macro agent-based model (M-ABM) in which I study the resultant distribution of wealth among households. I show that this model generates fat- tailed distributions of wealth in the household sector, as empirically observed in advanced economies. In a second chapter, I extend this model to study the macroeconomics of interpersonal and institutional discriminations against racial minorities. When discrimination is at work, racial disparities in income and wealth arise. The effect of the abolition of institutional discrimination is path-dependant: the more the economy is organized when this institutional change occurs, the more time it takes to get back to the counter-factual situation where no institutional discrimination was set up in the first place. In a third chapter, I study the evolution of the difference of median log-annual earnings between Blacks and Whites in the US between 1960 and 2015, focusing on the 2008 crisis. I control for selection arising from racial differentials in institutionalised population, and find that the unconditional racial wage gap attains a maximum in 2012. Controlling for age and education, I obtain the same result. Using unconditional quantile regressions, I show that the unexplained part of the unconditional racial wage gap has not increased during the crisis. Finally, in an afterword, I use metadata from RePEC to show that the share of economics papers published in the 13 of the 30 "top" journals containing "crisis" in their titles and/or abstracts has significantly increased in 2008.

El objetivo de esta investigación es evaluar qué variables impactan en la determinación del salario de los profesionales. Se han considerado como explicativas a las características por parte de la oferta laboral, es decir, del profesional, que son años de educación, género y zona de ubicación; también se incluye en la estimación a una variable que indica a qué familia de carrera pertenece el profesional. Además, se tiene en cuenta a una característica por parte de la demanda laboral, que es la actividad económica en la que trabaja el profesional, esto con el propósito de tener un modelo ampliado que analice tanto la perspectiva de oferta como de demanda laboral. Por ello, para la estimación de salarios se ha empleado la metodología en dos etapas de Heckman, ya que esta da solución al problema de sesgo de selección que está presente cuando se quieren estimar los ingresos laborales. De la sección econométrica se obtuvo que un individuo que cuente con más años de educación, que sea hombre y que trabaje en Lima Metropolitana, obtendrá mayores salarios. Por otro lado, tanto las variables de familia de carrera como de actividad económica resultaron fundamentales para la explicación de salarios de los profesionales. / The objective of this research is to evaluate which variables impact on the determination of the salary of professionals. The characteristics by part of the labor offer, that is, of the professional, have been considered as explanatory, which are years of education, gender, and area of location; a variable that indicates to which career family the professional belongs is also included in the estimation. In addition, a characteristic by part of the labor demand is taken into account, which is the economic activity in which the professional works, this with the purpose of having an expanded model that analyzes both the labor offer and demand perspectives. For this reason, for the estimation of salaries, Heckman’s two-stage methodology has been used, since it addresses the selection bias problem that is present when estimating labor income. From the econometric section, it was obtained that an individual who has more years of education, who is a man, and who works in Metropolitan Lima, has higher salaries. On the other hand, both the variables of career family and economic activity were fundamental for explaining the salaries of professionals. / Trabajo de investigación

近年來台灣製造業委外代工至大陸已是十分普遍的現象。從國外購買中間財貨、到國外設立跨國公司、購買國外製成品以國內的品牌進行銷售、或到國外找尋特殊投資關係合夥人等，都包含在委外代工的定義內。委外代工帶來了二個值得探討的議題：第一是委外代工對勞動市場的影響，包括失業問題和相對薪資的變化；第二，委外代工和經濟邊緣化問題之間存在尚未澄清的關聯，例如委外代工是不是會導致台灣經濟邊緣化、產業空洞化？因此，本論文分成兩大獨立的結構分別討論上述問題。 關於委外代工對勞動市場的影響，文獻上大多觀察下列現象（Feenstra and Hanson, 1995; Wood,1995）：製造業的就業規模是否縮減、整體製造業的技術勞動就業比例是否逐漸增加、整體製造業的非技術勞動就業比例是否逐漸下降、以及技術勞動和非技術勞動之間的薪資差距是否也逐漸擴大（反應出就業比例的改變）。本文對台灣的勞動市場進行研究，的確發現上述現象的產生。根據研究結果顯示，政府沒有理由限制傳統產業外移到大陸，反而要創造更好的高科技環境，積極地留住台灣的高科技產業。亦即，不同的產業需要不同的產業政策加以因應，雙向產業政策將是需要的。例如傳統產業，政府可以將政策提升到「委外代工國」的立場考量，讓獲利率低、生產不效率的產業委由大陸製造；對高科技產業政策政府則可試著採取「被委外代工國」的立場，積極創造更科技的產業環境，留住台灣科技產業和保住台灣科技產業代工王國的版圖。 對委外代工與台灣邊緣化議題的探討，主要源起於泛藍和泛綠在兩次總統大選中的兩岸政策的爭議─是否要「三通」。事實上，針對台灣是否會被邊緣化兩大陣營均尚未整理出一個完整的說明。透過Krugman and Venables（1995）模型闡述可以清楚地了解：邊緣化只是運輸成本下降的一個過程，不會是最終的結果。同時，運輸成本的下降並不是會造成邊緣化的唯一決定因子。產業關聯性和產品之間的替代程度都扮演相當重要的角色。因此，對不同產業設定特定政策才能達到抗邊緣化的效果。 / Outsourcing is the current trend between Taiwan and Mainland China in recent decade. Inclusive of importing intermediate inputs, setting up multinational firms, purchasing final goods produced abroad, outsourcing brings two topics worthy to discuss. My thesis is structured into two independent projects: one is to discuss the effects of outsourcing on unemployment and changes in relative wages, and the other focuses on the issue of whether outsourcing leads to Taiwan deindustrialization. The main findings in the first project are consistent with the major conclusions suggested by several studies（Feenstra and Hanson, 1995; Wood,1995）that: declining share of manufacturing employment in total employment, increasing share of skilled workers’ in total manufacturing employment and in total wage bill, while the converse in unskilled workers. Therefore, we have no reasons to limit the unprofitable and traditional industries to move out. What we should do is to develop and expand the higher-skilled sector and to encourage high-technology industries to upgrade the production with the most comparative advantage. Different industrial policies applicable to different features of each industry are necessary. To announce a rough and uniform policy will probably do more harms than goods. What unearthed from the second project is that concerns of economic periphery voiced by Pan-KMT and Pan-DPP alliances did not tell the full story. Krugman and Venables（1995）can be applied to show that economic periphery is just one of the points in the process of a dynamic development with reducing transportation cost. Besides, transportation cost is not the only contributor to “core and periphery” pattern. Share of intermediate input and elasticity of substitution for manufactured goods are also playing important roles. Therefore, different industries should be applicable for different policy arrangement.

In their pursuit of profits, adventure and new markets, humans have traded since prehistoric times. The relations between trade, profits and technological change, how- ever, were not the main concern of early economists ranging from Aristotle to the mercantilists. Presumably because in their world, the rate of technological change was decidedly low, and the basket and quality of goods available through production and trade did not change much over decades, or even centuries! In addition, it was not the technological change that brought markets closer, but “the ferocity of nomadic horsemen or the edge of a scimitar”, while “violently imposed monopolies and plunder”. (Findlay and O’Rourke, 2003) made trade more profitable. It was not until the industrial revolution that growth rates began to rise to high levels. Now that human inventions and discoveries came faster and cheaper than ever, trade liberalization was not only the way to gain access to new markets; trade liberalization had also a role in promoting growth. Trade liberalization in the form of lower trade costs, increases profits from exporting, and consequently, overall profits. That increases the incentives to innovate, produce something new and export it. Trade liberalization thus promotes technological change by increasing the incentives firms have to conduct R&amp;D, implement the innovation or improvement and make larger profits. The field of economics that studies economic growth as the result of decisions made by profit-maximizing firms is called endogenous growth theory. There have been a number of theoretical advances in endogenous growth theory over the last 20 years, but there is no consensus on whether trade liberalization promotes growth or not. Some models predict that trade liberalization has a positive effect on growth. Other models predict no effect at all. In addition, not all countries have benefited equally from globalization. In this dissertation, I study the linkages between trade liberalization and economic growth (papers one and two). In papers two and three, I also explore the relationships between globalization, growth and the demand for labor. There is well documented evidence from a number of countries, that the demand for less-skilled labor has decreased in recent decades, and this decrease has resulted in a higher skilled-wage premium, that is, the degree in which the wages of skilled workers exceed less-skilled worker wages. This phenomenon has occurred in several countries, including the U.S. The skilled- wage premium has also increased in Europe, although less dramatically. In paper two, the relationships between trade liberalization, growth and wage inequality are analyzed using an endogenous growth model. The third and final paper is an empirical study on the relationships between the demand for labor and offshoring. More specifically, I examine what happens to the demand for different types of labor (not only skilled and unskilled labor) in the Swedish plants of Swedish multinational enterprises, when these multinationals expand abroad. / Diss. Stockholm : Handelshögskolan i Stockholm, 2011