Die vorliegende Arbeit illustriert das Prinzip der Risikoteilung anhand typischer Beispiele von Versicherungsverträgen zwischen Versicherungsnehmer und Versicherungsunternehmen oder zwischen Erstversicherer und Rückversicherer, und sie skizziert einige der mit der Risikoteilung verbundenen mathematischen Probleme. / The present paper illustrates the principle of risk sharing by way of prominent examples of insurance contracts between the policyholder and the insurance company, as well as between the primary insurer and the reinsurer, and it addresses some of the mathematical problems related to risk sharing.

In this paper we empirically explore how characteristics of the domestic financial system influence the international allocation of consumption risk using a sample of OECD countries. Our results show that the extent of risk sharing achieved does not depend on the overall development of the domestic financial system per se. Rather, it depends on how the financial system is organized. Specifically, we find that countries characterized by developed financial markets are less exposed to idiosyncratic risk, whereas the development of the banking sector contributes little to the international diversification of consumption risk. We also find that countries with market-based financial systems manage to share a significantly larger fraction of their country-specific risk than bank-based economies. / Series: Department of Economics Working Paper Series

Vid en asymmetrisk chock, det vill säga en chock som ger olika utfall över regioner, eller är regionsspecifik, försvåras stabiliseringsåtgärder. Penningpolitiska åtgärder kan inte bedrivas utan att påverka alla regioner och att överlåta stabiliseringsprocessen till enskilda regioner medför även problem. Dock har det visats att det centrala skattesystemet utjämnar disponibel inkomst vid asymmetriska chocker och stabiliserar inkomster mellan regioner. I den här uppsatsen analyserar vi hur det svenska skattesystemet absorberar asymmetriska inkomstchocker sett till utjämning av personlig disponibel inkomst genom skatter och överföringar. Genom att använda paneldata under perioden 2000 till 2018 utför vi en kvantitativ studie baserad på en ekonometrisk modell där vi mäter hur inkomstchocker absorberas av skattesystemet vid en förändring i inkomst på 1 krona. Våra resultat visar att skattesystemet absorberar i genomsnitt 18 procent av den initiala chocken, detta sker främst genom skatter. Fortsättningsvis finns det stora skillnader mellan regioner där absorberingen varierar mellan -15 till 71 procent. Vid jämförelse mot tidigare studier på det svenska systemet tyder resultaten på att riskdelning bör vara lägre, men vi ser en högre grad av inkomstutjämning, vilket kan bero på skillnad i dataspecifikation. Vi ser även att utjämningen sker till större del genom skatter än överföringar jämfört med tidigare undersökningsperiod. Vi undersöker också om skattesystemet har lika utjämningseffekt mellan olika kommungrupper där resultatet visar att detta inte stämmer. / Facing asymmetric shocks i.e. a shock that act differently over regions or a region-specific shock imposes hardship on stabilization policies. Monetary policies cannot be conducted without causing disturbances across regions and assigning the stabilization process to individual regions also implies difficulties. However, the fiscal system has been proven to be a smoothening component facing asymmetrical disturbances stabilizing income across regions. In this thesis we analyze how the Swedish fiscal system absorbs asymmetric income shocks regarding smoothening disposable income via taxes and transfers. Using panel data over the period 2000-2018 we perform a quantitative study based on an econometric model where we measure the amount of an income shock absorbed by the fiscal system due to a 1-krona change in personal income.  Our results show that the fiscal system absorbs on average 18 percent of the initial shock, this is mostly due to the tax effect. However, there is major differences across regions where the amount of shock absorbing varies between -15 to 71 percent. Comparing our results to previous studies on the Swedish system evidence suggests that the amount of risk-sharing should be lower, but we see a higher degree of income smoothening, which might be due to difference in data specification. There is also evidence that income smoothening is more reliant on taxes compared to previous study. We also explore if the fiscal system has an equal smoothening effect across different municipal groups where evidence shows that this is not true.

No description available.

As envisaged in the Sustainable Development Goals, eradicating poverty by 2030 is among the most important steps to achieve a better and more sustainable future. A key contribution to reach this target is to ensure that vulnerable households are effectively protected against weather-related extreme events and other economic, social and ecological shocks and disasters. Insurance products specifically designed for the needs of low-income households in developing countries are seen as an effective instrument to encompass also the poor with an affordable risk-coping mechanism and are thus highly promoted and supported by governments in recent years. However, apart from direct positive effects, the introduction of formal insurance may have unintended side effects. In particular, it might affect traditional risk-sharing arrangements where income losses are covered by an exchange of money, labour and in-kind goods between neighbours, relatives or friends. A weakening of informal safety nets may increase social inequality if poor households cannot afford formal insurance. In order to design insurance products in a sustainable way, sound understanding of their interplay with risk-sharing networks is urgently needed. Socio-environmental modelling is a suitable approach to address the complexity of this challenge. In the first part of this thesis, an agent-based model is developed to investigate the effects of formal insurance and informal risk-sharing on the resilience of smallholders. To lay the conceptual foundation for this approach, a literature review is presented which provides an overview of how to couple agent-based modelling with social network analysis. In two subsequent modelling studies, it is analysed (i) how the introduction of insurance influences the overall welfare in a population and (ii) what determines the resilience of the poorest to shocks when income is heterogeneously distributed and not all households can afford formal insurance. The simulation results underline the importance of designing insurance policies in close alignment with established risk-coping arrangements to ensure sustainability while striving to eradicate poverty. It is shown that introducing formal insurance can have negative side effects when insured households have fewer resources to share with their uninsured peers after paying the insurance premium or when they reduce their solidarity. However, especially when many households are simultaneously affected by a shock, e.g. by droughts or floods, formal insurance is a valuable addition to informal risk-sharing. By applying a regression analysis to simulation results for an empirical network from the Philippines, it is furthermore inferred that network characteristics must be considered in addition to individual household properties to identify the most vulnerable households that neither have access to formal insurance nor are adequately protected through informal risk-sharing. In the second part of this thesis, a broader perspective is taken on the use of models in socio-environmental systems. First, it is envisioned how models in combination with empirical studies could improve insurance design under climate change. Second, requirements for making socio-environmental modelling more useful to support policy and management and scientific results more influential on policy-making are synthesised. Overall, this thesis offers new insights into the interplay of formal and informal risk-coping instruments that complement existing empirical research and underlines the potential of socio-environmental modelling to address sustainability and development challenges.

No description available.

Die vorliegende Arbeit illustriert das Prinzip der Risikoteilung anhand typischer Beispiele von Versicherungsverträgen zwischen Versicherungsnehmer und Versicherungsunternehmen oder zwischen Erstversicherer und Rückversicherer, und sie skizziert einige der mit der Risikoteilung verbundenen mathematischen Probleme. / The present paper illustrates the principle of risk sharing by way of prominent examples of insurance contracts between the policyholder and the insurance company, as well as between the primary insurer and the reinsurer, and it addresses some of the mathematical problems related to risk sharing.

本論文著眼於「無法在任意時點，利用不同經濟個體進行避險」的總體衝擊， 以「經濟個體的終生消費流量平滑化」為目標貫穿全文，探討金融中介活動所扮演的角色。全文包含兩部分。 第一部分，假設經濟體系的風險性資產總量固定且產出每期波動，是總體衝擊的來源。本文認為金融中介在累積利潤的同時，也建立了為經濟個體提供總體衝擊緩衝機制的能力；中介的利潤空間、獨占力量及契約內容共同影響總體風險分攤的運作。而金融中介與直接金融交易二者的風險分攤功能彼此互補，並非相互競爭。此外，政府應適當規範金融中介的市場結構，避免金融中介擁有過大或不足的獨占力量，進而引導中介提供福利水準較高的金融契約。 第二部分，進一步考慮將資源投入安全性與風險性生產技術的投資決策。本文認為在「經濟個體面臨個別流動性風險、且缺乏流動性的長期生產技術屬於風險性投資」的情況下，跨世代金融中介可以利用股權形式的金融契約，吸引每期新世代經濟個體參與，使當期既存中年世代參與者的風險配置效率藉由新存款的挹注而獲得改善、減緩產出波動與個人流動性需求不確定對經濟個體終生消費配置的衝擊。新世代經濟個體參與跨代中介機制不僅可與中年世代共享經濟繁榮的好處，提升事前期望效用；並且亦延續中介既有的經營策略，繼續從事跨世代金融中介業務。

A presente tese realiza uma análise interdisciplinar dos contratos de aliança, arranjos colaborativos desenvolvidos a partir do início da década de 90, cujo objetivo é a implantação de projetos complexos industriais e de infraestrutura. Este trabalho investiga a percepção do autor de que o modelo proposto pelos contratos de aliança, em regra, promove um esvaziamento voluntário da função do contrato como ferramenta de aplicação, ainda que potencial, de sanções a comportamentos culposos, justamente com o fim de não prejudicar a construção natural de uma relação cooperativa. Busca-se ainda compreender a função desempenhada pelo contrato e pelo direito contratual, nesse contexto colaborativo, e qual a relação entre os mecanismos formais e informais de garantia de cumprimento contratual. Sustenta-se que, nesse universo, o aparato formal do contrato auxilia as ferramentas informais de enforcement, fornecendo o arcabouço de troca de informações essencial à criação endógena de confiança. Ademais, a fim de não prejudicar o ambiente cooperativo, sustenta-se a aplicação de sanções contratuais formais somente em situações excepcionais, geralmente caracterizadas pelo elemento de quebra de confiança. Sugere-se, ao longo da tese, que uma abordagem processual de regulação do contrato a qual permite sanção de comportamentos que descumpram o procedimento contratual acordado seria mais adequada do que uma abordagem estritamente substantiva que proteja a relação inicial de troca. Ao final, amparada pelas percepções construídas ao longo da pesquisa, é realizada uma reflexão jurídico-dogmática, na qual, após a contextualização jurídica dos contratos de aliança, lhes são sugeridas interpretações de aplicação de conceitos da teoria obrigacional, e de ferramentas de organização de interesses intracontratuais, como a boa-fé, o conflito de interesses e os deveres fiduciários. / This thesis conducts an interdisciplinary analysis of project alliancing, collaborative arrangements developed as of the beginning of the 90s, whose goal is the implementation of complex industrial and infrastructure projects. This work investigates the perception of the author that the model proposed by alliance contracts, in general, promotes a voluntary emptying of the role of the contract in punishing, even potentially, unintentional contractual defaults, as a means of not harming the natural construction of a cooperative relation. The work seeks to understand the role played by the contract and the contractual law, in such collaborative environment, and what is the relation between formal and informal mechanisms of contractual enforcement. It argues that, in this universe, formal contractual apparatus supports informal contractual enforcement mechanisms, providing a governance framework that allows information exchange, which is essential to the endogenous creation of trust. Moreover, in order not to jeopardize the cooperative environment, this thesis suggests the suitability of formal contractual punishment only in exceptional circumstances, often characterized by the breach of trust. It is suggested, along the thesis, that a procedural approach of contract regulation which allows punishment of behaviors that deviates from agreed contractual procedures may be more suitable than a strictly substantive approach that protects the initial exchange relation. At the end, supported by the perceptions constructed along the research, some legal-dogmatic considerations are made, in which, after legally qualifying the alliance contracts, it is suggested to it some applicative interpretations of concepts of obligational theory, and organizational tools of intracontractual interests, such as good faith, conflicts of interest and fiduciary duties.

Dans une économie mondialisée sur un secteur très concurrentiel, ce travail de recherche articulé en cinq parties propose d’étudier de nouveaux schémas de concurrence entre médicaments princeps et génériques au sein de l’Union Européenne, en intégrant les articulations entre régulation publique et incitations à innover. Dans une première partie introductive, les spécificités réglementaires très évolutives des marchés pharmaceutiques sont présentées ainsi que leurs conséquences induites sur les systèmes de prix et l'innovation.La deuxième partie, vise à analyser dans un premier temps l'approche adoptée par la Commission Européenne et les autorités de concurrence des divers Etats membres quant à la définition du marché pertinent de produits sur ces marchés. Plus particulièrement, dans un second temps, une étude empirique des schémas de substitution existants est développée à partir des décisions prises par la Commission Européenne de 1989 à 2011 en matière de fusions dans le secteur concerné. Cet examen des différents critères retenus pour définir la taille du marché pertinent souligne la tendance lourde à définir des marchés pertinents de produits toujours plus étroits, atteignant même le niveau moléculaire.Dans la troisième partie, l’analyse du système de prix de référence mis en place dans de nombreux Etats membres sur ces marchés concurrentiels, montre,en prenant en compte les avantages informatifs des princeps, dans quelle mesure la mise en place d'un tel système, peut favoriser l’innovation.Sous la quatrième partie, la modélisation de l'impact des nouveaux modèles d'accords de partage de risques se propose d’étudier comment de tels accords peuvent résoudre les problématiques d'aléa moral et de sélection adverse sur ces marchés, en incitant les entreprises à investir dans leur produit et à renforcer la qualité des biens fournis.Enfin, la partie cinq conclut le travail en mettant en perspective les résultats obtenus et en analysant les conséquences sous-jacentes pour les politiques publiques. / The aim of this thesis is to examine the competition patterns that exist between originators and generics by focusing on the articulations between regulation and incentives to innovate. Once the characteristics of regulation in pharmaceutical markets is reviewed in the first chapter and an analysis of some current challenges related to cost-containment measures and innovation issues is performed, then in the second chapter, an empirical study is performed to investigate substitution patterns. Based on the EC´s merger decisions in the pharmaceutical sector from 1989 to 2011, this study stresses the key criteria to define the scope of the relevant product market based on substitution patterns and shows the trend towards a narrower market in time. Chapters three and four aim to analyse in depth two widespread measures, the internal reference pricing system in off-patent markets, and risk-sharing schemes in patent-protected markets. By taking into account informational advantages of originators over generics, the third chapter shows the extent to which the implementation of a reference price for off-patent markets can contribute in promoting innovation. Finally, in the fourth chapter, the modeling of risk-sharing schemes explains how such schemes can help in solving moral hazard and adverse selection issues by continuously giving pharmaceutical companies incentives to innovate and supplying medicinal products of a higher quality.