The paper builds on the Marxist concept of exploitation to explore the meaning of the Post Keynesian notion of uncertainty. Uncertainty is mediated by institutions and is distributed unevenly among different social groups. As different historical social formations entail different institutional structures, the distribution and nature of uncertainty also differ. The configurations between class relations and uncertainty are analyzed for the capitalist, feudal and slave modes of production. It is demonstrated that modes of production do not only imply specific exploitative relations but also different relative distributions of uncertainty amongst classes. Joining Marxian and Post Keynesian approaches allows a richer understanding of exploitive relations and illuminates the full societal impact of uncertainty. It is shown that only in capitalism is the exploited class exposed to a substantial degree of economic uncertainty. (author's abstract) / Series: Department of Economics Working Paper Series

This paper aims at empirically estimating the demand effects of changes in functional income distribution for Austria. Based on a Post-Kaleckian macro model, this paper estimates the effects of a change in the wage share on the main demand aggregates. The results for the behavioral functions for consumption, investment, prices, exports and imports are compared with the specifications of the WIFO macro model and the IHS macro model. A reduction in the wage share has a restrictive effect on domestic demand as consumption decreases more strongly than investment increases. Because of the strong effects on net exports the overall effects of a decrease in the wage share are expansionary. However the latter effect operates only as far as the fall in the wage share increases competitiveness. As wage shares were also falling in Austria's main trading partners, the effect seems to have been neutralized. (author's abstract) / Series: Department of Economics Working Paper Series

Germany has experienced a period of extreme nominal and real wage moderation since the mid 1990s. Contrary to the expectations of liberal economists this has failed to improve Germany's mediocre economic performance. However, Germany is now running substantial current account surpluses. One possible explanation for Germany's disappointing performance is found in Kaleckian theory, which highlights that the domestic demand effect of a decline in the wage share will typically be contractionary, whereas net exports will increase (Blecker 1989). The size of the foreign demand effect will critically depend on the degree of openness of the economy. The paper aims at estimating the demand side of a Bhaduri-Marglin (1990) -type model empirically for Germany. The paper builds on the estimation strategy of Stockhammer, Onaran and Ederer (2007) and Hein and Vogel (2008a, 2008b). The main contribution lies in a careful analysis of the effects of globalization. Since Germany is a large open economy by now it is a particularly interesting case study. (author´s abstract) / Series: Department of Economics Working Paper Series

The aim of this paper is to analyze the pattern of speculation-led growth in Turkey. It is dependent on international capital flows, whose continuity becomes more and more critical given the current account deficit, which is estimated to reach 6.1% as a ratio to GDP at the end of 2005. The paper assesses the sustainability of this speculation-led growth in the context of EU enlargement and compares the current state of fragility with former crises in Turkey as well as in East Asia and Latin America. Following a severe financial crisis in 2001, Turkey has entered a new phase of fragile growth led by boom-euphoric expectations. The paper aims at explaining this new phase and the evolution of the risk perceptions of both the creditors as well as the debtors in this "speculation game" based on the post-Keynesian/Minskyan concepts of endogenous expectations and financial fragility. (author's abstract) / Series: Department of Economics Working Paper Series

The paper seeks to contribute to the empirical analysis of financial uncertainty and investment from a Post Keynesian perspective. The paper uses the volatility of the exchange rate, the volatility of the stock market index, and the real gold price as indicators for financial uncertainty. An increase in the volatility of a variable is a sufficient, but not a necessary condition for an increase in uncertainty (regarding this variable). The effects of changes in uncertainty on investment are investigated econometrically for the USA, the UK, the Netherlands, Germany, and France. Financial uncertainty has significant negative effects in the USA and the Netherlands. (author´s abstract) / Series: Department of Economics Working Paper Series

In this study, a Kaleckian-Post-Keynesian macroeconomic model, which is an extended version of the Bhaduri and Marglin (1990) model, serves as the starting point. The merit of a Kaleckian model for our purposes is that it highlights the dual function of wages as a component of aggregate demand as well as a cost item as opposed to the mainstream economics, which perceive wages merely as a cost item. Depending on the relative magnitude of these two effects, Kaleckian models distinguish between profit-led and wage-led regimes, where the latter is defined as a low rate of accumulation being caused by a high profit share. Are actual economies wage-led or profit-led? Current orthodoxy implicitly assumes that they are profit-led, and thus supports the neoliberal policy agenda. The purpose of the paper is to carry this discussion into the empirical terrain, and to test whether accumulation and employment are profit-led in two groups of countries. We do so by means of a structural vector autoregression (VAR) model. The model is estimated for USA, UK and France to represent the major developed countries, and for Turkey and Korea to represent developing countries. The latter are chosen since they represent two different export-oriented growth experiences. The results of the adjustment experiences of both countries are in striking contrast to orthodox theory, however they also present counter-examples to each other in terms of their ways of integrating into the world economy. (author's abstract) / Series: Working Papers Series "Growth and Employment in Europe: Sustainability and Competitiveness"

The aim of this paper is to analyze the fragility of the New Member States and accession countries in the Central Eastern and South Eastern European countries (henceforth Eastern Europe) to the turbulences in the global economy and the changes in the direction of the international capital flows. (author's abstract) / Series: Department of Economics Working Paper Series

This paper investigates several possible reasons for the exceptional period of growth in the nineties in the US.. These years can be characterised as a case of an expansionary fiscal consolidation as strong growth and structural surpluses were observed. Five different channels, the literature suggests for relationships between government spending and consumption are investigated. There are hints that the economy did not work in a Keynesian way but there is no proof of the existence of a Non-Keynesian effect. Expectational effects could not be separated empirically from asset wealth. Whereas standard consumption estimations failed, a model adding a factor containing asset wealth and expectations was finally able to explain consumption from 1996 onwards. This has important implications for policy. Moreover, compositional effects were found to be important. The two main findings of the paper, namely an asset wealth/expectations effect and compositional effects support the interpretation of a positive link between public savings, asset values and growth. (author's abstract) / Series: Department of Economics Working Paper Series

An increase in the wage share has contradictory effects on the subaggregates of aggregate demand. Private consumption expenditures ought to increase because wage incomes typically are associated with higher consumption propensities than capital incomes. Investment expenditures ought to be negatively affected because investment will positively depend on profits. Net exports will be negatively affected because an increase in the wage share corresponds to an increase in unit labor costs and thus a loss in competitiveness. Theoretically aggregate demand can therefore be either wage led or profit led depending on how these effects add up. The results will crucially depend on how open the economy is internationally. The paper estimates a Post-Kaleckian macro model incorporating these effects for the Euro area and finds that the Euro area is presently in a wage-led demand regime. Implications for wage policies are discussed. (author's abstract) / Series: Department of Economics Working Paper Series

A presente tese é constituída de três ensaios que abordam duas relevantes questões que estão intrinsecamente relacionadas em macroeconomia: política monetária e inflação. No primeiro ensaio, nós procuramos averiguar não linearidades na função de reação do Banco Central do Brasil (BCB) através da estimação de regressões quantílicas inversa, sugerido por Wolters (2012) e proposto por Chernozhukov and Hansen (2005, 2006). Este método nos possibilitou detectar não linearidades na função de reação do BCB sem a necessidade de fazer suposições específicas acerca dos fatores que determinam essas não linearidades. Em específico, nós observamos que: i) a resposta da taxa de juros ao hiato da inflação corrente e esperada foi, em geral, mais forte na parte superior da distribuição condicional da taxa de juros Selic; ii) a resposta ao hiato do produto apresentou uma tendência crescente e significativa na parte inferior da distribuição condicional da taxa Selic; iii) a resposta do BCB à taxa de câmbio real foi positiva e mais elevada na cauda superior da distribuição condicional da taxa Selic. No segundo ensaio, nós investigamos a existência de não linearidades na função de reação do Banco Central do Brasil (BCB) decorrentes de incertezas desse policymaker acerca dos efeitos do hiato do produto sobre a inflação. Teoricamente, nós seguimos Tillmann (2011) para obter uma regra de política monetária ótima não linear que é robusta às incertezas acerca do trade-off produto-inflação na curva de Phillips. Além disso, nós realizamos testes de quebra estrutural para avaliar possíveis mudanças na condução da política monetária brasileira durante o regime de metas de inflação. Os resultados indicaram que: i) as incertezas acerca da inclinação na curva Phillips implicaram em não linearidades na função de reação do BCB; ii) não se pode rejeitar a hipótese de uma quebra estrutural nos parâmetros da regra monetária ocorrendo no terceiro trimestre de 2003; iii) houve um aumento na resposta da taxa Selic ao hiato do produto e uma redução da reação ao hiato da inflação corrente no regime Meirelles- Tombini; e iv) o BCB também tem reagido à taxa de câmbio durante o regime Meirelles- Tombini. No terceiro ensaio, nós procuramos analisar os determinantes da inflação no Brasil através da estimação da Curva de Phillips Novo-Keynesiana (CPNK) proposta por Blanchard e Galí (2007) e a versão padrão proposta por Galí e Gertler (1999). Além disso, realizamos testes de quebras estruturais para avaliar possíveis mudanças na dinâmica da inflação brasileira durante o período de 2002 a 2014. Os resultados indicaram que: i) os testes de quebra estrutural apontam a existência de pelo menos uma mudança estrutural nos coeficientes da CPNK; ii) o componente forward-looking da inflação é dominante, embora sua relevância tenha sido reduzida após 2004; iii) a taxa de desemprego tem afetado negativamente a inflação, embora seja observado uma redução desse impacto nos últimos anos; iv) as mudanças na taxa de câmbio apenas tiveram efeitos sobre a inflação na primeira subamostra e tem perdido relevância no período mais recente; v) o efeito do hiato do produto sobre a inflação corrente diminuiu nos anos recentes; vi) em geral, nós rejeitamos a hipótese nula de uma curva de Phillips vertical no longo prazo a um nível de significância de 5%, mas não a 1%. / This thesis is composed of three essays to address two important issues that are intricately related in macroeconomics: monetary policy and inflation. In the first essay, we seek to investigate nonlinearities in the reaction function of the Central Bank of Brazil (CBB) by estimating inverse quantile regressions (IVQR), suggested by Wolters (2012) and proposed by Chernozhukov and Hansen (2005, 2006). This method enabled us to detect nonlinearities in the CBB’s reaction function without the need to make specific assumptions about the factors that determine these nonlinearities. In particular, we observed that: i) the response of the interest rate to the current and expected inflation was, in general, stronger in the upper tail of the conditional interest rate distribution; ii) the response to the output gap showed a growing and significant trend in the lower tail of the conditional Selic rate distribution; iii) the response of the CBB to the real exchange rate was positive and higher in the upper tail of the conditional Selic rate distribution. In the second essay, we investigate the existence of nonlinearities in the reaction function of the Central Bank of Brazil (CBB) arising from this policymaker’s uncertainties about the effects of the output gap on inflation. Theoretically, we follow Tillmann (2011) to obtain a nonlinear optimal monetary policy rule that is robust to uncertainty about the output-inflation trade-off of the Phillips Curve In addition, we perform structural break tests to assess possible changes in the conduct of the Brazilian monetary policy during the inflation-targeting regime. The results indicate that: i) the uncertainties about the slope in the Phillips curve implied nonlinearities in the CBB’s reaction function; ii) we cannot reject the hypothesis of a structural break in the monetary rule parameters occurring in the third quarter of 2003; iii) there was an increase in the response of the Selic rate to output gap and a weaker response to the current inflation gap in Meirelles Tombini’s administration; and iv) the CBB has also reacted to the exchange rate in Meirelles-Tombini’s administration. In the third essay, we proposed to analyze the determinants of inflation in Brazil through the estimation of the new Keynesian Phillips curve (NKPC) proposed by Blanchard and Galí (2007) and the standard version proposed by Galí and Gertler (1999). In addition, we perform structural break tests to assess possible changes in the dynamics of inflation in Brazil during the period 2002 to 2014. The results indicated that: i) structural break tests indicate the existence of at least one structural change in the coefficients of NKPC ; ii) the forward-looking component of inflation is dominant, though its importance has been reduced after 2004; iii) the unemployment rate has negatively affected inflation, although a reduction of this impact has been observed in recent years; iv) changes in the rate of exchange only had effects on inflation in the first subsample and losing relevance in the most recent period; v) the effect of the output gap on the current inflation has declined in recent years; vi) overall, we reject the null hypothesis of a vertical Phillips curve in the long term at a significance level of 5%, but not 1%.