BIELEFELD UNIVERSIT ¨ AT Faculty of business administration and economics Bielefeld Graduate School of Economics and Management Essays in Globalization Technology and the Labor Market A Dissertation Submitted to the Faculty of Business Administration and Economics of Bielefeld University in Partial Fulfillment of the Requirements for the Doctoral Degree (Dr. rer. pol.) in Economics By: Ashenafi Teshome GUTA Supervisors: First Supervisor: Prof. Dr. Gerald Willmann Second Supervisor: J-Prof. Anna Zaharieva Thesis Committee Chair: Prof. Dr. Herbert Dawid April, 2019