Dr. Martyna Marczak

• Tommaso Proietti, Martyna Marczak, Gianluigi Mazzi, A class of periodic trend models for seasonal time series, Journal of Forecasting, 38, (2), 2019, p106--121Journal Article, 2019, DOI
• Gregor Pfeifer, Fabian Wahl, Martyna Marczak, Illuminating the World Cup effect: Night lights evidence from South Africa, Journal of Regional Science, 58, (5), 2018, p887--920Journal Article, 2018, DOI
• Tommaso Proietti, Martyna Marczak, Gianluigi Mazzi, Euromind-D: A Density Estimate of Monthly Gross Domestic Product for the Euro Area, Journal of Applied Econometrics, 32, (3), 2017, p683--703Journal Article, 2017, DOI
• Martyna Marczak, Thomas Beissinger, Bidirectional relationship between investor sentiment and excess returns: new evidence from the wavelet perspective, Applied Economics Letters, 23, (18), 2016, p1305--1311Journal Article, 2016, DOI
• Martyna Marczak, Thomas Beissinger, A new sectoral unit labour cost indicator based on global value chains, Applied Economics Letters, 29, (13), 2022, p1152--1157Journal Article, 2022, DOI
• Martyna Marczak, Víctor Gómez, Monthly US business cycle indicators: a new multivariate approach based on a band-pass filter, Empirical Economics, 52, (4), 2017, p1379--1408Journal Article, 2017, DOI
• Marczak, M., Proietti, T., Outlier detection in structural time series models: The indicator saturation approach, International Journal of Forecasting, 32, (1), 2016, p180-202Journal Article, 2016, DOI
• Marczak, M., Gómez, V., Cyclicality of real wages in the USA and Germany: New insights from wavelet analysis, Economic Modelling, 47, 2015, p40-52Journal Article, 2015, DOI
• Marczak, M., Beissinger, T., Real wages and the business cycle in Germany, Empirical Economics, 44, (2), 2013, p469-490Journal Article, 2013, DOI
• Martyna Marczak, Tommaso Proietti, Stefano Grassi, A data-cleaning augmented Kalman filter for robust estimation of state space models, Econometrics and Statistics, 5, 2018, p107--123Journal Article, 2018, DOI

• Martyna Marczak, Thomas Beissinger, Franziska Brall, Technical Change, Task Allocation, and Labor Unions, 2022Working Paper
• Joel Hellier, Thomas Beissinger, Martyna Marczak, Divergence in Labour Force Growth: Should Wages and Prices Grow Faster in Germany?, 2020Working Paper
• Martyna Marczak, Thomas Beissinger, Competitiveness at the Country-Sector Level: New Measures Based on Global Value Chains, 2018Working Paper
• Martyna Marczak, Victor Gomez, SPECTRAN, a Set of Matlab Programs for Spectral Analysis, 2012Working Paper

I am a macroeconomist interested in research questions from different fields of macroeconomics. 1. Intersection of macroeconomics and labor economics: I am interested in different forms of technical change and their implications for the labor market. In the most recent paper, I examine in a theoretical framework how skill-biased technical change affects the task content of production and how this in turn impacts the wage-setting behavior of labor unions, and ultimately income inequality. The proposed framework combines for the first time in the literature the task approach, labor unions, and search frictions in the labor market. In a current project, I build upon the expertise of the previous work and analyze within an extended theoretical framework the impact of Hartz IV reforms on the German labor market using the task-based approach. In another recent project, I examine the role of automation threat in the unions' wage-setting behavior using robot data from the International Federation of Robotics and the rich administrative linked employer-employee dataset of the Institute for Employment Research in Germany. 2. Empirical macroeconomics, especially business cycle analysis, seasonal adjustment, and the detection of structural breaks: * In two contributions, I propose new methods for the analysis of the cyclical behavior of real wages. This research question is highly relevant from the economic policy perspective since empirical results provide valuable insights into the wage and price dynamics for monetary policy. Moreover, an empirical investigation is also important from the perspective of theoretical macroeconomics as different theories deliver different predictions on the procyclical or anticyclical pattern of real wages. * In two further articles, I develop innovative methods that deliver timely and precise business cycle forecasts that play a key role for policy makers, such as central banks. Other three publications related to business cycle analysis offer solutions when the underlying time series display outliers, structural breaks and seasonal patterns. This aspect is important inasmuch as macroeconomic series should be in the first step adjusted for irregular movements and seasonal fluctuations before the cyclical properties are examined. 3. International economics, especially global value chains (GVCs) The focus of this research is the question how intersectoral and international linkages influence unit labor costs and thereby the competitiveness of industries and countries, or affect labor market outcomes when GVCs are recorded correctly. Moreover, the analysis of GVCs offers potential for business cycle analysis in that it provides a micro foundation for the international transmission and synchronization of business cycles.

• "Young Researcher Best Paper Award" of the Faculty of Business, Economics and Social Sciences at the University of Hohenheim 2016
• Visiting Professorships and Fellowships Benefactions Fund 2025
• Award of the employers' federation Suedwestmetall (Germany) for the best dissertation thesis (prize of 5,000 Euro) 2016
• Arts and Social Sciences Benefactions Fund, Trinity College Dublin 2024
• Grant awarded by Eurostat for the research paper "EuroMind-D: A Density Estimate of Monthly Gross Domestic Product for the Euro Area"as a part of the main project "Database management and research activities related to the production of Principle European Economic Indicators" 2014
• Grant for the research visit at the Research Institute for Global Value Chains (RIGVC) in Beijing, financed from the project CHIKOH (China Competence in Hohenheim) with the funds of the Federal Ministry of Education and Research 2019
• Award of the employers' federation Suedwestmetall (Germany) for the best dissertation thesis (prize of 5,000 Euro) 2010

• European Economic Association
• Society of Labor Economists
• Verein fuer Socialpolitik (German Economic Association)
• Royal Economic Society
• Econometric Society
• Econometric Society
• American Economic Association

• Reviewer for: Journal of the Royal Statistical Society, Empirical Economics, Economic Modelling, Journal of Business Cycle Measurement and Analysis, Journal of Business Cycle Research, Review of Development Economics, Structural Change and Economic Dynamics, Journal of Labor Market Research, Swiss Journal of Economics and Statistics, Working Paper series of the Czech National Bank
• Member of the appointment committee for the full professorship in Statistics and Econometrics I, University of Hohenheim (Stuttgart, Germany) 2013
• Member of the appointment committee for the full professorship in Statistics and Econometrics II, University of Hohenheim 2010/2011