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While some pronouncements of expert treaty bodies have been considered ‘key catalysts’ for the development of international human rights law, others are only selectively referred to in legal practice. This article argues that the varying normative impact is due to the informal character of pronouncements. In the absence of treaty provisions specifying their legal effect, practitioners tend to rely on different factors and arguments when either drawing on or rejecting certain pronouncements. Scholars in turn face difficulties when trying to identify explanatory patterns within this diverging practice as the informal character confronts both international lawyers and international relations scholars with their respective methodological ‘blind spots’. In light of these intradisciplinary challenges, this article explores the extent as to which an interdisciplinary approach helps to assess the reasons for the varying impact of pronouncements. After analysing the factors determining their legal significance on the basis of State practice and the academic debate, this article identifies the drafting process as a factor which promises to be particularly insightful when explored from an interdisciplinary perspective and sketches out a framework for future research.
Stochastic uncertainty can cause difficult coordination problems that may hinder mutually beneficial cooperation. We propose a mechanism of ex-post voluntary transfers designed to circumvent these coordination problems and ask whether it can do so. To test this, we implement a controlled laboratory experiment based on a repeatedly played Ultimatum Game with a stochastic endowment. Contrary to our hypothesis, we find that allowing voluntary transfers does not entail an efficiency increase. We suggest and analyze two main reasons for this finding: First, the stochastic uncertainty forces proposers to accept high strategic uncertainty if they intend to cooperate by claiming a low amount (which many proposers do not). Second, many responders behave only incompletely conditionally cooperative by transferring too little (which hinders cooperation in future periods).
Numerous studies investigate which sanctioning institutions prevent cartel formation but little is known as to how these sanctions work. We contribute to understanding the inner workings of cartels by studying experimentally the effect of sanctioning institutions on firms’ communication. Using machine learning to organize the chat communication into topics, we find that firms are significantly less likely to communicate explicitly about price fixing when sanctioning institutions are present. At the same time, average prices are lower when communication is less explicit. A mediation analysis suggests that sanctions are effective in hindering cartel formation not only because they introduce a risk of being fined but also by reducing the prevalence of explicit price communication.
Drinking is Different!
(2020)
Unhealthy behavior can be extremely costly from a micro- and macroeconomic perspective and exploring the determinants of such behavior is highly important from an economist’s point of view. We examine whether locus of control (LOC) can explain alcohol consumption as an important domain of health behavior. LOC measures how much an individual believes that she is in control of the consequences of her own actions for her life’s future outcomes. While earlier literature showed that an increasing internal LOC is associated with increased health-conscious behavior in domains such as smoking, exercise or diets, we find that drinking seems to be different. Using German panel data from the Socio-Economic Panel (SOEP) we find a significant positive effect of having an internal LOC on the probability of moderate and regular drinking. We suggest and discuss two likely mechanisms for this relationship and find interesting gender differences. While social investments play an important role for both men and women, risk perceptions are especially relevant for men.
Envy is an unpleasant emotion. If individuals anticipate that comparing their payoff with the (potentially higher) payoff of others will make them envious, they may want to actively avoid information about other people’s payoffs. Given the opportunity to reduce another person’s payoff, an individual’s envy may trigger behavior that is detrimental to welfare. In this case, if individuals anticipate that they will react in a welfare-reducing way, they may also avoid information about other people’s payoffs from the outset. We investigated these two hypotheses using three experiments. We found that 13% of our potentially envious subjects avoided information when they did not have the opportunity to reduce another participant’s payoff. Psychological scales do not explain this behavior. We also found that voluntarily uninformed subjects did neither deduct less of the payoff nor less frequently than subjects who could not avoid the information.
This paper evaluates the construction of the rights of human rights defenders within international law and its shortcomings in protecting women. Human rights defenders have historically been defined on the basis of their actions as defenders. However, as Marxist-feminist scholar Silvia Federici contends, women are inherently politicised and, moreover, face obstacles to political action which are invisible to and untouchable by the law. Labour rights set an example of handling such a disadvantaged political position by placing vital importance on workers’ right to association and collective action. The paper closes with the suggestion that transposing this construction of rights to women would better protect women as human rights defenders while emphasising their capacity for self-determination in their political actions.
Mit RISE-DE liegt als FDMentor-Projektergebnis ein Referenzmodell für Strategieprozesse im institutionellen Forschungsdatenmanagement vor. RISE-DE bietet einen Bewertungsrahmen zur Selbstevaluation und Zielbestimmung und eignet sich als Werkzeug zur Gestaltung einer strukturierten, Stakeholder-orientierten Strategieentwicklung für das Forschungsdatenmanagement an Hochschulen und Forschungseinrichtungen.
RISE-DE basiert auf dem lose an Reifegradenmodellen orientierten RISE-Framework des DCC (RISE v1.1), wurde aber für den Einsatz in partizipativen Prozessen deutlich überarbeitet sowie inhaltlich an den deutschen Wissenschaftskontext und Entwicklungen in der guten Praxis im FDM angepasst. Ein mit Hilfe von RISE-DE erarbeitete Strategie erfüllt zugleich die von der Hochschulrektorenkonferenz und der League of European Research Universities formulierten Anforderungen.
Mit RISE-DE liegt als FDMentor-Projektergebnis ein Referenzmodell für Strategieprozesse im institutionellen Forschungsdatenmanagement (FDM) vor. RISE-DE bietet einen Bewertungsrahmen zur Selbstevaluation und Zielbestimmung und eignet sich als Werkzeug zur Gestaltung einer strukturierten, Stakeholder-orientierten Strategieentwicklung für das FDM an Hochschulen und Forschungseinrichtungen.
RISE-DE basiert auf dem lose an Reifegradenmodellen orientierten Research Infrastructure Self-Evaluation Framework (RISE v1.1) des Digital Curation Centre (DCC), wurde aber für den Einsatz in partizipativen Prozessen deutlich überarbeitet sowie inhaltlich an den deutschen Wissenschaftskontext und Entwicklungen in der guten Praxis im FDM angepasst. Eine mit Hilfe von RISE-DE erarbeitete Strategie erfüllt zugleich die von der Hochschulrektorenkonferenz (HRK) und der League of European Research Universities (LERU) formulierten Empfehlungen.
Die hier vorliegende RISE-DE Version 1.0 nimmt Erfahrungen aus dem Piloteinsatz an der Universität Potsdam sowie Feedback aus der Community auf. Es beinhaltet gegenüber der Vorversion zum einen Veränderungen an den Themen des Referenzmodells, zum anderen wurden Empfehlungen für FDM-Beginner deutlich erweitert und Erläuterungen für die Durchführung partizipativer Strategieprozesse hinzugefügt. In Zusammenarbeit mit der Hochschule für Angewandte Wissenschaften Hamburg entstand außerdem ein digitales Evaluations-Tool.
Paid parental leave schemes have been shown to increase women’s employment rates but decrease their wages in case of extended leave durations. In view of these potential trade-offs, many countries are discussing the optimal design of parental leave policies. We analyze the impact of a major parental leave reform on mothers’ long-term earnings. The 2007 German parental leave reform replaced a means-tested benefit with a more generous earnings-related benefit that is granted for a shorter period of time. Additionally, a “daddy quota” of two months was introduced. To identify the causal effect of this policy on long-run earnings of mothers, we use a difference-in-difference approach that compares labor market outcomes of mothers who gave birth just before and right after the reform and nets out seasonal effects by including the year before. Using administrative social security data, we confirm previous findings and show that the average duration of employment interruptions increased for high-income mothers. Nevertheless, we find a positive long-run effect on earnings for mothers in this group. This effect cannot be explained by changes in working hours, observed characteristics, changes in employer stability or fertility patterns. Descriptive evidence suggests that the stronger involvement of fathers, incentivized by the “daddy months”, could have facilitated mothers’ re-entry into the labor market and thereby increased earnings. For mothers with low prior-to-birth earnings, however, we do not find any beneficial labor market effects of this parental leave reform.
Using quantile regression methods, this paper analyses the gender wage gap across the wage distribution and over time (1990–2014), while controlling for changing sample selection into full-time employment. Our findings show that the selection-corrected gender wage gap is much larger than the one observed in the data, which is mainly due to large positive selection of women into full-time employment. However, we show that selection-corrected wages of male and female workers at the lower half of the distribution have moderately converged over time. The reason for this development have been changes in the composition of the male full-time employment force over time, which in spite of the rather constant male full-time employment rate, have given place to a small but rising selection bias in male observed wages. In the upper half of the wage distribution, however, neither the observed nor the selection-corrected gender wage gap has narrowed over time.
Auftrag und Möglichkeiten der Kommission für Friedenskonsolidierung im System der Vereinten Nationen
(2019)
Vor dem Hintergrund der international steigenden Zahl an Konfliktrückfällen insbesondere im Anschluss an bereits offiziell für beendet erklärte Bürgerkriege und die daraus folgende zunehmende Relevanz von Peacebuilding-Maßnahmen der internationalen Gemeinschaft, wird in diesem Beitrag die Arbeit der Kommission für Friedenskonsolidierung der Vereinten Nationen untersucht. Einerseits werden hierbei, nach einigen einführenden Erläuterungen zum Begriff der Friedenskonsolidierung an sich sowie der Zusammensetzung und Funktionsweise der Kommission, zunächst ihre einzelnen Aufträge systematisch unter Einordnung in den Kontext des Peacebuilding-Systems der Vereinten Nationen herausgearbeitet und eine auswertende Bilanz unter ihre bisherige Erfüllung gezogen. Daran anschließend erfolgt eine Darstellung der zukünftigen Möglichkeiten der Kommission im Bereich der Friedenskonsolidierung unter besonderer Berücksichtigung ihres Potenzials innerhalb des Systems der Vereinten Nationen sowie der einschlägigen völkerrechtlichen Aspekte.
We estimate the long-term effects of start-up subsidies (SUS) for the unemployed on subjective outcome indicators of well-being, as measured by the participants’ satisfaction in different domains. This extends previous analyses of the current German SUS program (“Gründungszuschuss”) that focused on objective outcomes – such as employment and income – and allows us to make a more complete judgment about the overall effects of SUS at the individual level. This is especially important because subsidizing the transition into self-employment may have unintended adverse effects on participants’ well-being due to its risky nature and lower social security protection, especially in the long run. Having access to linked administrative-survey data providing us with rich information on pre-treatment characteristics, we base our analysis on the conditional independence assumption and use propensity score matching to estimate causal effects within the potential outcomes framework. We find long-term positive effects on job satisfaction but negative effects on individuals’ satisfaction with their social security situation. Further findings suggest that the negative effect on satisfaction with social security may be driven by negative effects on unemployment and retirement insurance coverage. Our heterogeneity analysis reveals substantial variation in effects across gender, age groups and skill levels. The sensitivity analyses show that these findings are highly robust.
What Makes an Employer?
(2019)
As the policy debate on entrepreneurship increasingly centers on firm growth in terms of job creation, it is important to better understand which variables influence the first hiring decision and which ones influence the subsequent survival as an employer. Using the German Socio-economic Panel (SOEP), we analyze what role individual characteristics of entrepreneurs play in sustainable job creation. While human and social capital variables positively influence the hiring decision and the survival as an employer in the same direction, we show that none of the personality traits affect the two outcomes in the same way. Some traits are only relevant for survival as an employer but do not influence the hiring decision, other traits even unfold a revolving door effect, in the sense that employers tend to fail due to the same characteristics that positively influenced their hiring decision.
A growing demand for natural resources embedded in current changes of the international order will put pressure on states to secure the future availability of these resources. Some political discourses suggest that states might respond by challenging the foundations of international law. Whereas the UN Charter was inter alia aimed at eliminating uses of force for economic reasons, one may observe an on-going trend of securitization of matters of resource supply resulting into the revival of self-preservation doctrines. The chapter will show that those claims lack a normative foundation in the current framework of the prohibition of the use of force. Moreover, international law has sufficient instruments to cope with disputes over access to resources by other means than the use of force. The international community, therefore, must oppose claims that may contribute to normative uncertainties and strengthen already existing instruments of pacific settlement of disputes.
This paper assesses the rise and decline of international rule of law in the case of non-state armed actors. Both signs of rise and signs of decline of international rule of law show in the case of non- state armed actors. Signs of rise include the expansion of coverage of international humanitarian law (IHL) and international criminal law, as well as international legal argumentation and rhetoric made by non-state armed groups. Some non-state armed actors express that they are governed by IHL in public statements or bilateral agreements with international actors, partly acknowledging universality of international humanitarian norms, and sometimes act as such. Signs of decline in the international rule of law also show – although some of them can be seen as business-as-usual – privileging of military advantage, instrumental use of international law (as justification and local interpretations), as well as conflicting understanding of IHL between local and global norms. The multiplicity of non-state actors also portends the decline of international rule of law, with the proliferation of many non-organized groups without legitimacy-seeking motivations.
Modern rule of law and post-war constitutionalism are both anchored in rights-based limitations on state authority. Rule-of-law norms and principles, at both domestic and international levels, are designed to protect the freedom and dignity of the person. Given this “thick” conception of the rule of law, authoritarian practices that remove constraints on domestic political leaders and weaken mechanisms for holding them accountable necessarily erode both domestic and international rule of law. Drawing on political science research on authoritarian politics, this study identifies three core elements of authoritarian political strategies: subordination of the judiciary, suppression of independent news media and freedom of expression, and restrictions on the ability of civil society groups to organize and participate in public life. According to available data, each of these three practices has become increasingly common in recent years. This study offers a composite measure of the core authoritarian practices and uses it to identify the countries that have shown the most marked increases in authoritarianism. The spread and deepening of these authoritarian practices in diverse regimes around the world diminishes international rule of law. The conclusion argues that resurgent authoritarianism degrades international rule of law even if this is defined as the specifically post-Cold War international legal order.
How to identify customary international law is an important question of international law. The International Law Commission has in 2018 adopted a set of sixteen conclusions, together with commentaries, on this topic. The paper consists of three parts: First, the reasons are discussed why the Commission came to work on the topic “Identification of customary international law”. Then, some of its conclusions are highlighted. Finally, the outcome of the work of the Commission is placed in a general context, before concluding.
From an active labor market policy perspective, start-up subsidies for unemployed individuals are very effective in improving long-term labor market outcomes for participants. From a business perspective, however, the assessment of these public programs is less clear since they might attract individuals with low entrepreneurial abilities and produce businesses with low survival rates and little contribution to job creation, economic growth, and innovation. In this paper, we use a rich data set to compare participants of a German start-up subsidy program for unemployed individuals to a group of regular founders who started from nonunemployment and did not receive the subsidy. The data allows us to analyze their business performance up until 40 months after business formation. We find that formerly subsidized founders lag behind not only in survival and job creation, but especially also in innovation activities. The gaps in these business outcomes are relatively constant or even widening over time. Hence, we do not see any indication of catching up in the longer run. While the gap in survival can be entirely explained by initial differences in observable start-up characteristics, the gap in business development remains and seems to be the result of restricted access to capital as well as differential business strategies and dynamics. Considering these conflicting results for the assessment of the subsidy program from an ALMP and business perspective, policy makers need to carefully weigh the costs and benefits of such a strategy to find the right policy mix.
This article explores, whether domestic judges might be held accountable under international criminal law (ICL). To date, international criminal justice has almost entirely focused on prosecuting political or military leaders. The Justice Case tried before the Nuremberg Military Tribunal in 1946 marks the most prominent exception. Prior to it, the judiciary – otherwise considered the epitome of justice – had mutated into a murderous machinery under Nazi rule. Judicial decisions do have far-reaching implications possibly constituting or contributing to international crimes. This holds true in a wide range of cases, for instance on practices of warfare and torture, on the use of certain weapon technologies, or on policies relating to minorities or racial segregation. I argue that domestic judges are accountable when engaging in international crimes. The article delves into technical aspects of criminal law; as well as the notions of judicial independence and immunity. While guaranteeing the rule of law, these two notions challenge the core idea of ICL: its equal application vis-à-vis all perpetrators of international crimes irrespective of official capacity. In order to differentiate due judicial conduct and its abuse in violation of ICL, I suggest a threshold a judicial act needs to exceed for entailing accountability for an international crime.
International courts regularly cite each other, in part as a means of building legitimacy. Such international, cross-court use of precedent (or “judicial dialogue”) among the regional human rights courts and the Human Rights Committee has an additional purpose and effect: the construction of a rights-based global constitutionalism. Judicial dialogue among the human rights courts is purposeful in that the courts see themselves as embedded in, and contributing to, a global human rights legal system. Cross-citation among the human rights courts advances the construction of rights-based global constitutionalism in that it provides a basic degree of coordination among the regional courts. The jurisprudence of the U.N. Human Rights Committee (HRC), as an authoritative interpreter of core international human rights norms, plays the role of a central focal point for the decentralized coordination of jurisprudence. The network of regional courts and the HRC is building an emergent institutional structure for global rights-based constitutionalism.
This paper – which is based on the Thomas Franck Lecture held by the author at Humboldt University Berlin on 13 May 2019 – argues that the most likely development of international to be expected will be the coexistence of two “legal worlds”. On the one hand, an inter-State law brutally regulating political relations between human groups whitewashed by nationalism; on the other hand, a transnational or “a-national” law regulating economic relations between private as well as public interests. Further, the paper argues that there are two obvious victims – of very different nature – of this foreseeable evolution: the human being on the one hand, the certainty and effectiveness of the rule of law itself on the other hand.
Once the “popular plaything of Realpolitiker” the doctrine of rebus sic stantibus post the 1969 VCLT is often described as an objective rule by which, on grounds of equity and justice, a fundamental change of circumstances may be invoked as a ground for termination. Yet recent practice from States such as Ecuador, Russia, Denmark and the United Kingdom suggests that it is returning with a new livery. They point to an understanding based on vital States’ interests––a view popular among scholars such as Erich Kaufmann at the beginning of the last century.
This paper focuses on one particular issue which has arisen in the course of the ongoing debate on the reform of investor-State dispute settlement (ISDS), namely that of the appointment of arbitrators. Taking as its starting point that there now exists tentative consensus that the present system for the appointment of arbitrators either causes or exacerbates certain problematic aspects of the current ISDS system, the paper explores one option for reform, namely the introduction of an independent panel for the selection of investment arbitrators. In doing so, it is argued that a shift in the normative basis of the rules governing appointments is required in order to accommodate the principles of party autonomy and the international rule of law. Such reform, while not completely removing the initiative that parties presently enjoy, is the most efficient way to introduce rule of law considerations such as a measure of judicial independence into the current appointments system. This, it is argued, would in turn help to address some of the problematic features of the appointment of arbitrators in ISDS.
Entrepreneurial persistence is demonstrated by an entrepreneur’s continued positive maintenance of entrepreneurial motivation and constantly-renewed active engagement in a new business venture despite counter forces or enticing alternatives. It is thus a crucial factor for entrepreneurs when pursuing and exploiting their business opportunities and to realize potential economic gains and benefits. Using rich data on a representative sample of German business founders, we investigate the determinants of entrepreneurial persistence. Next to observed survival we also construct a hybrid persistence measure capturing also the motivational dimension of persistence. We analyze the influence of individual-level (human capital and personality) and business-related characteristics on both measures as well as their relative importance. We find that the two indicators emphasize different aspects of persistence. For the survival indicator, the predictive power is concentrated in business characteristics and human capital, while for hybrid persistence, the dominant factors are business characteristics and personality. Finally, we show that results are heterogeneous across subgroups. In particular, formerly-unemployed founders do not differ in survival chances, but they are more likely to lack a high psychological commitment to their business ventures.
Being ignorant of key aspects of a strategic interaction can represent an advantage rather than a handicap. We study one particular context in which ignorance can be beneficial: iterated strategic interactions in which voluntary cooperation may be sustained into the final round if players voluntarily forego knowledge about the time horizon. We experimentally examine this option to remain ignorant about the time horizon in a finitely repeated two-person prisoners’ dilemma game. We confirm that pairs without horizon knowledge avoid the drop in cooperation that otherwise occurs toward the end of the game. However, this effect is superposed by cooperation declining more rapidly in pairs without horizon knowledge during the middle phase of the game, especially if players do not know that the other player also wanted to remain ignorant of the time horizon.
Topologische Datenanalyse
(2019)
Bei der Analyse von höherdimensionalen Daten kann deren Gestalt wichtige Informationen über den Datensatz liefern. Bei einer gegebenen Punktwolke, die aus einem unbekannten topologischen Raum ausgewählt wurde, versucht die Topologische Datenanalyse (TDA) den ursprünglichen Raum zu rekonstruieren. Dieser Beitrag soll eine Einführung in die Topologische Datenanalyse geben und konzentriert sich dabei auf zwei wichtige Aspekte: die Persistente Homologie und den Mapper. Dabei werden zuerst die notwendigen theoretischen Grundlagen vorgestellt und anschließend wird die Methodik bei der Visualisierung von Daten eingesetzt.
Die Persistente Homologie ist eines der Standardwerkzeuge in der TDA. Sie findet ihre Anwendung beispielsweise in den Bereichen Formerkennung und -beschreibung. Der Mapper als zweites wichtiges Konzept der TDA wandelt umfangreiche, höherdimensionale Datensätze in Simplizialkomplexe um und kann dadurch geometrische und topologische Eigenschaften der Daten bestimmen. Des Weiteren ist die Mapper-Methode ein brauchbares Werkzeug zur Visualisierungen von mehrdimensionalen Daten, woran statistische Verfahren scheitern.
Untersucht werden die von BulwienGesa erhobenen und aufbereiteten jahresdurchschnittlichen Wiederverkaufspreise von Eigentumswohnungen und Einfamilienhäusern in 401 kreisfreien Städten und Landkreisen für die Jahre 2004–2017. Dabei zeigt sich eine Zunahme der regionalen Streuung im Zeitverlauf vor allem in der auf die Finanzkrise 2007–2009 folgenden Zeit. Im Durchschnitt der Regionen (Landkreise und kreisfreie Städte) steigen die Preise; sie entwickeln sich aber regional stark unterschiedlich (in manchen Regionen stagnieren sie oder sind gefallen). Dies führt auch zur Zunahme der Variationskoeffizienten, also der relativen Streuung der regionalen Preise. Dies deutet auf eine Zunahme der regionalen Disparitäten in der Bundesrepublik Deutschland. Besondere Divergenzen zeigen sich zwischen den alten und den neuen Bundesländern, wie auch zwischen prosperierenden kreisfreien Städten und deren Umland und ökonomisch schwächeren Städten und Landkreisen.
How does the international Rule of Law apply to constrain the conduct of the Executive within a constitutional State that adopts a dualist approach to the reception of international law? This paper argues that, so far from being inconsistent with the concept of the Rule of Law, the Executive within a dualist constitution has a self-enforcing obligation to abide by the obligations of the State under international law. This is not dependent on Parliament’s incorporation of treaty obligations into domestic law. It is the correlative consequence of the allocation to the Executive of the power to conduct foreign relations. The paper develops this argument in response to recent debate in the United Kingdom on whether Ministers have an obligation to comply with international law–a reference that the Government removed from the Ministerial Code. It shows that such an obligation is consistent with both four centuries of the practice of the British State and with principle.
Expanding public or publicly subsidized childcare has been a top social policy priority in many industrialized countries. It is supposed to increase fertility, promote children’s development and enhance mothers’ labor market attachment. In this paper, we analyze the causal effect of one of the largest expansions of subsidized childcare for children up to three years among industrialized countries on the employment of mothers in Germany. Identification is based on spatial and temporal variation in the expansion of publicly subsidized childcare triggered by two comprehensive childcare policy reforms. The empirical analysis is based on the German Microcensus that is matched to county level data on childcare availability. Based on our preferred specification which includes time and county fixed effects we find that an increase in childcare slots by one percentage point increases mothers’ labor market participation rate by 0.2 percentage points. The overall increase in employment is explained by the rise in part-time employment with relatively long hours (20-35 hours per week). We do not find a change in full-time employment or lower part-time employment that is causally related to the childcare expansion. The effect is almost entirely driven by mothers with medium-level qualifications. Mothers with low education levels do not profit from this reform calling for a stronger policy focus on particularly disadvantaged groups in coming years.
We use panel data from Germany to analyze the effect of population density on urban air pollution (nitrogen oxides, particulate matter and ozone). To address unobserved heterogeneity and omitted variables, we present long difference/fixed effects estimates and instrumental variables estimates, using historical population and soil quality as instruments. Our preferred estimates imply that a one-standard deviation increase in population density increases air pollution by 3-12%.
”Thanks in Advance”
(2019)
This paper studies the effect of the commonly used phrase “thanks in advance” on compliance with a small request. In a controlled laboratory experiment we ask participants to give a detailed answer to an open question. The treatment variable is whether or not they see the phrase “thanks in advance.” Our participants react to the treatment by exerting less effort in answering the request even though they perceive the phrase as polite.
The German start-up subsidy (SUS) program for the unemployed has recently undergone a major make-over, altering its institutional setup, adding an additional layer of selection and leading to ambiguous predictions of the program’s effectiveness. Using propensity score matching (PSM) as our main empirical approach, we provide estimates of long-term effects of the post-reform subsidy on individual employment prospects and labor market earnings up to 40 months after entering the program. Our results suggest large and persistent long-term effects of the subsidy on employment probabilities and net earned income. These effects are larger than what was estimated for the pre-reform program. Extensive sensitivity analyses within the standard PSM framework reveal that the results are robust to different choices regarding the implementation of the weighting procedure and also with respect to deviations from the conditional independence assumption. As a further assessment of the results’ sensitivity, we go beyond the standard selection-on-observables approach and employ an instrumental variable setup using regional variation in the likelihood of receiving treatment. Here, we exploit the fact that the reform increased the discretionary power of local employment agencies in allocating active labor market policy funds, allowing us to obtain a measure of local preferences for SUS as the program of choice. The results based on this approach give rise to similar estimates. Thus, our results indicating that SUS are still an effective active labor market program after the reform do not appear to be driven by “hidden bias”.
This paper presents an experiment on the effect of retroactive price-reduction schemes on buyers’ repeated purchase decisions. Such schemes promise buyers a reduced price for all units that are bought in a certain time frame if the total quantity that is purchased passes a given threshold. This study finds a loyalty-enhancing effect of retroactive price-reduction schemes only if the buyers ex-ante expected that entering into the scheme would maximize their monetary gain, but later learn that they should leave the scheme. Furthermore, the effect crucially hinges on the framing of the price reduction.
A rich literature links knowledge inputs with innovative outputs. However, most of what is known is restricted to manufacturing. This paper analyzes whether the three aspects involving innovative activity - R&D; innovative output; and productivity - hold for knowledge intensive services. Combining the models of Crepon et al. (1998) and of Ackerberg et al. (2015), allows for causal interpretation of the relationship between innovation output and labor productivity. We find that knowledge intensive services benefit from innovation activities in the sense that these activities causally increase their labor productivity. Moreover, the firm size advantage found for manufacturing in previous studies nearly disappears for knowledge intensive services.
The paper extends a static discrete-choice labor supply model by adding participation and hours constraints. We identify restrictions by survey information on the eligibility and search activities of individuals as well as actual and desired hours. This provides for a more robust identification of preferences and constraints. Both, preferences and restrictions are allowed to vary by and are related through observed and unobserved characteristics. We distinguish various restrictions mechanisms: labor demand rationing, working hours norms varying across occupations, and insufficient public childcare on the supply side of the market. The effect of these mechanisms is simulated by relaxing different constraints at a time. We apply the empirical frame- work to evaluate an in-work benefit for low-paid parents in the German institutional context. The benefit is supposed to increase work incentives for secondary earners. Based on the structural model we are able to disentangle behavioral reactions into the pure incentive effect and the limiting impact of constraints at the intensive and extensive margin. We find that the in-work benefit for parents substantially increases working hours of mothers of young children, especially when they have a low education. Simulating the effects of restrictions shows their substantial impact on employment of mothers with young children.
Getting a Yes
(2019)
This paper studies how the request for a favor has to be devised in order to maximize its chance of success. We present results from a mini-dictator game, in which the recipient can send a free-form text message to the dictator before the latter decides. We find that putting effort into the message, writing in a humorous way and mentioning reasons why the money is needed pays off. Additionally, we find differences in the behavior of male and female dictators. Only men react positively to efficiency arguments, while only women react to messages that emphasize the dictator’s power and responsibility.
In 2015, Germany introduced a statutory hourly minimum wage that was not only universally binding but also set at a relatively high level. We discuss the short-run effects of this new minimum wage on a wide set of socio-economic outcomes, such as employment and working hours, earnings and wage inequality, dependent and self-employment, as well as reservation wages and satisfaction. We also discuss difficulties in the implementation of the minimum wage and the measurement of its effects related to non-compliance and suitability of data sources. Two years after the minimum wage introduction, the following conclusions can be drawn: while hourly wages increased for low-wage earners, some small negative employment effects are also identifiable. The effects on aspired goals, such as poverty and inequality reduction, have not materialized in the short run. Instead, a tendency to reduce working hours is found, which alleviates the desired positive impact on monthly income. Additionally, the level of non-compliance was substantial in the short run, thus drawing attention to problems when implementing such a wide-reaching policy.
The worldwide populist wave has contributed to a perception that international law is currently in a state of crisis. This article examines in how far populist governments have challenged prevailing interpretations of international law. The article links structural features of populism with an analysis of populist governmental strategies and argumentative practices. It demonstrates that, in their rhetoric, populist governments promote an understanding of international law as a mere law of coordination. This is, however, not entirely reflected in their legal practices where an instrumental, cherry-picking approach prevails. The article concludes that policies of populist governments affect the current state of international law on two different levels: In the political sphere their practices alter the general environment in which legal rules are interpreted. In the legal sphere populist governments push for changes in the interpretation of established international legal rules. The article substantiates these propositions by focusing on the principle of nonintervention and foreign funding for NGOs.
International adjudication is currently under assault, encouraging a number of States to withdraw, or to consider withdrawing, from treaties providing for international dispute settlement. This Working Paper argues that the act of treaty withdrawal is not merely as the unilateral executive exercise of the individual sovereign prerogative of a State. International law places checks upon the exercise of withdrawal, recognising that it is an act that of its nature affects the interests of other States parties, which have a collective interest in constraining withdrawal. National courts have a complementary function in restraining unilateral withdrawal in order to support the domestic constitution. The arguments advanced against international adjudication in the name of popular democracy at the national level can serve as a cloak for the exercise of executive power unrestrained by law. The submission by States of their disputes to peaceful settlement through international adjudication is central, not incidental, to the successful operation of the international legal system.
The paper aims to lay out a framework for evaluating value shifts in the international legal order for the purposes of a forthcoming book. In view of current contestations it asks whether we are observing yet another period of norm change (Wandel) or even a more fundamental transformation of international law – a metamorphosis (Verwandlung). For this purpose it suggests to look into the mechanisms of how norms change from the perspective of legal and political science and also to approximate a reference point where change turns into metamorphosis. It submits that such a point may be reached where specific legally protected values are indeed changing (change of legal values) or where the very idea of protecting certain values through law is renounced (delegalizing of values). The paper discusses the benefits of such an interdisciplinary exchange and tries to identify differences and commonalities among both disciplinary perspectives.
Unfolding the history of one of the oldest human val-ues, the freedom of expression, while defining its limits, is a complicated task. Does freedom stop where hate starts? This very old dilemma is -now more than ever before- revealing new dimensions. Politicians and new laws aim at regulating free expression, while disagree-ments over such regulation gradually become a source of endless conflict in newly formed multicultural, inter-connected, and digitized societies. The example of the Network Enforcement Act is used to understand the idea of restrictive legal practices in Germany, but also to enlighten the fact that law is a human construction which was created in order to regulate communication among individuals. Alternative practices, to straight legal ones, are summarized to show other dimensions of regulating hate speech without involving top-down approaches. The article proposes the approach of re-storative justice as a combination of legal and medita-tive practices in cases of hate speech. One advantage of the restorative justice approach elaborated in this arti-cle is the potential to remedy the inner hate and the pain, both of the victim and perpetrator. Finally, reveal-ing parts of history and new aspects of the ‘hate speech-puzzle’, leads to a questioning of contemporary social structures that possibly generate hate itself.
International women’s rights
(2019)
This paper explores current contestations of women’s rights and the implications thereof for international legislation. While contestation over women’s rights is a far from new phenomenon, over the past two decades opposition to gender equality has become better organized at the transnational level, mobilizing a dispersed set of state and non-state actors, and is becoming more successful in halting the progress of women’s rights. I argue that the position of oppositional actors vis-à-vis women rights activism appears to be strengthened by two recent political developments: democratic backsliding and the closure of civic space. Some preliminary findings show how these interrelated developments lead to an erosion of women’s rights at the national level. Governments use low key tactics to dismantle institutional and implementation arrangements and sideline women’s organisations. Next, I explore the implications of these developments for gender equality norms at the national and international level. The active strategy of counter norming adopted by conservative and religious state and non-state actors, designed to circumvent and also undermine Western norms, is increasingly successful. In addition to this, the threatened position of domestic actors monitoring compliance of international treaties, makes the chances of backsliding on international commitments much higher.
Underpinning a legal system with certain values and helping to resolve norm conflicts is in domestic legal systems usually achieved through hierarchical superiority of certain norms of a constitutional nature. The present paper examines the question whether jus cogens can discharge this function within the traditionally horizontal and decentralized international legal order. In so doing, it commences with an overview of the historical origins of peremptory norms in legal scholarship, followed by its endorsement by positive law and courts and tribunals. This analysis illustrates that there are lingering uncertainties pertaining to the process of identification of peremptory norms. Even so, the concept has been invoked in State executive practice (although infrequently) and has been endorsed by various courts. However, such invocation thus far has had a limited impact from a legal perspective. It was mainly confined to a strengthened moral appeal and did in particular not facilitate the resolution of norm conflicts. The contribution further suggests that this limited impact results from the fact that the content of peremptory obligations is either very narrow or very vague. This, in turn, implies a lack of consensus amongst States regarding the content (scope) of jus cogens, including the values underlying these norms. As a result, it is questionable whether the construct of jus cogens is able to provide meaningful legal protection against the erosion of legal norms. It is too rudimentary in character to entrench and stabilize core human rights values as the moral foundation of the international legal order.
Matters of Interpretation
(2018)
This article analyses, from a methodological and theoretical perspective, how international legal method deals with change. Section 2 sets the stage, develops a legal perspective on change of norms and values in the international legal order and distinguishes between structural change and norm change. This is followed in sections 3 and 4 by an examination of doctrinal categories that provide techniques to process change in international legal practice. International legal method is equipped with several techniques to process—and to conceptualize and evaluate—change: ‘Formal’ norm change is a matter of the doctrine of sources. International law can also change ‘informally’ through the shifting meaning of norm texts. Both formal and informal change is a matter of interpretation. Therefore, section 5 aims at theorizing interpretive change. It examines the relationship between the sources of law and legal interpretation as categories of change and analyses theoretical perceptions of interpretive change.
This paper assesses, both quantitatively and qualitatively, the work of the Peace and Security Council (PSC) of the African Union (AU) with respect to peace support operations. It seeks to know whether the establishment of the PSC in 2002 is leading or has led to a rise or a decline of collective security in Africa. It is demonstrated that in regard to its relative legal and institutional robustness, the PSC can be perceived as a rise of collective security compared with its predecessor, the Central Organ of the Organisation of African Unity (OAU). However, it stagnates in terms of quantity and quality of actions on the ground. The main problem lies in the lack of sufficient operational autonomy from member states and international partners, such as the United Nations. Therefore, the PSC’s contribution to the maintenance of peace and security, and so the rise of the international rule of law in Africa is limited. The continent is still a war-torn region, affected by political crises and the expansion of terrorism in many countries. To solve this problem, AU member states should strengthen the PSC’s capacity, starting with the quick operationalisation of the African Standby Force. The implementation of the 2016 decision on alternative sources of financing AU’s institutions and activities is also a priority. In this regard, the political will of African states that may show that they want to take their organisation more seriously is required. This can further the AU self-reliance policy in collective security though the promotion of African solutions to African problems, and reduce the burden of the United Nations and other non-African actors’ interventions in the continent.
The author discusses the question of authority when determining the content of an international legal rule. Taking Article 38(1)(d) of the ICJ Statute as a point of departure, he determines through meticolous analysis what ranks as judicial decisions as well as teachings within the meaning of the norm. The author then proceeds to a number of factors to determine authoritativeness: objectivity, knowledgeability, depth of analysis, and the presence or otherwise of reasoning and, in particular, the persuasiveness of an opinion. In the case of judicial pronouncements, the author points out that the paradox between Article 59 and Article 38(1)(d) of the ICJ Statute is only an apparent one. While judgments of the Court are binding only between the parties, it is merely the underlying reasoning that can be taken into account in the context of Article 38(1)(d) if considered persuasive. Without central authority, authoritativenes in international law must always be earned which is also the reason for the lack of an hierarchical order between as well as within judicial pronouncements and learned writings though the former are usually more likely to fulfil the criteria of authoritativeness. In both cases, however, previously acquired reputation of a court or even an individual judge as well as of a learned writer can create a presumption of authoritativeness. On a more general level, the author concludes with a call for a more careful differentiation between the determination of law and its application. Putting the issue discussed into perspective, the author argues that situations of law determination arise, contrary to common understanding, in fact far less often than situations of law application.
Seeming consensus has formed among legal scholars and practitioners that a rising China seeks changes in rules and institutions of international law. Yet, attendant accounts of how such changes may and already do restructure global legal order remain relatively underdeveloped. An observed rise in the international rule of law during immediate post-Cold War years has now been disrupted by a confluence of regional shifts in geopolitical power and contestation of law’s normative foundations by newly empowered states. In these circumstances, advocates for stability and continuity in variations of the “liberal international order” or “rules-based order” have sought to defend the authority and resilience of universally defined international legal norms against various regional challenges to the boundary between law and politics. Yet, as both global power and universal conceptions of law fragment, so too will the presumed equilibrium between international law’s political and normative foundations. Signs of fragmentation are now conspicuously playing out in East and Southeast Asia, where the relative rise of China is amplified by alternative Chinese conceptions of foundations and purposes of global legal order. This working paper introduces the concept of “geolegal power” to describe the competitive logic of a territorially bounded leading state restructuring interpretation and development of legal rules and institutions, which is emerging more explicitly within regional subsystems. Fragmentation of the international rule of law by a rising Chinese “geolegal order” is demonstrated by contested maritime rules in three key areas: freedom of navigation; third-party and judicial settlement; and, territorial claims under UNCLOS. Evidence that China is carving out an effective subsystem of rules designated as “law” in the most consequential of security and geopolitical domains poses a critical challenge to the structure of a unified and universal system of international law. Legal scholars and practitioners must better grasp reconfiguring foundations of international law in order to address rising orders of “geolegal power”, in which the regional meaning and operation of law is no longer reconcilable within the terms of an “international” rule of law.
The present study aims at identifying the main trends in Italian international legal scholarship from 1990 onward. After a brief appraisal of the current situation within the Italian community of international law scholars, it will first focus on the methods and fields of interest of the most recent scholarship. Then, an attempt at contextualization will be made, by offering a brief overview of some current trends in international legal scholarship outside Italy and comparing these trends with the recent developments in Italian scholarship. In conclusion, it will be argued that, despite the greater fluidity of national identities, the persistence of common features still appears to characterize the Italian scholarship of international law. A long, deeply rooted and culturally rich tradition of studies in international law, the use of the Italian language, the dimension of the community as well as the presence of lively scientific institutions, are factors that, taken together, appear to favor a phenomenon of reproduction and perpetuation of certain common patterns of thought, thereby preserving the existence of a national perspective.
Challenging the Paris Peace Treaties, State Sovereignty, and Western-Dominated International Law
(2018)
The genesis of the jus cogens doctrine in international law for long has been associated with a turn to a more value-laden international law after the Second World War promoted by British rapporteurs in the International Law Commission. This paper builds on this narrative but adds two seemingly contradictory story lines. In the 1920s and 1930s German-speaking international legal scholars like Alfred Verdross developed the concept as a tool to renounce the disliked Paris Peace Treaties in the context of more and more aggressive German revision policies. Furthermore, after 1945 Soviet thinkers of the Khrushchev era used jus cogens to criticize Western economic and military integration, while newly independent states regarded the concept as a promising vehicle for distancing themselves from traditional Western international legal notions in the era of decolonization. Hence, instead of embracing a progress narrative, a dark sides-account or a contributionist reading of the history of international law, this paper highlights the multifaceted origins of the jus cogens doctrine.
In light of current efforts at addressing the dangers of fake news, this article will revisit the international law relevant to the phenomenon, in particular the prohibition of intervention, the 1936 International Convention on the Use of Broadcasting in the Cause of Peace, and the 1953 Convention on the International Right of Correction. It will be argued that important lessons can be learned from the League of Nations’ (LON) efforts in the interwar period and the UN’s activities in the immediate post-WWII era, while taking into account the new challenges that arise from modern communication technology.
Taking up the LON’s and UN’s distinction between false and distorted news, the international legal framework will be tested, in particular, against the coverage of the 2016 ‘Lisa case’ by Russian Government-funded media. This coverage is widely considered to be fake news aimed at destabilizing Germany’s society and institutions.
The article argues that false news can be subject to repressive regulation in a sensible manner. Distorted news, however, will have to be tolerated legally, since prohibitions in this regard would be too prone to abuse. A free and pluralist media, complemented by an appropriate governmental information policy, remains the best answer to fake news in all its forms. Due diligence obligations to fact-check, transparency, and remedies that are effective despite difficulties in attribution, and despite a lack of universal acceptance, could likewise be conducive.