This thesis has been written as final step to complete the Master Economics of Management & Organization and to get the title Master of Science. I am glad that it did not feel like a compulsory course most of the time, thanks to the interesting and actual topic of career choices. During the writing process, many people have helped and supported me. This is the place to thank them for that. First of all, I would like to thank my thesis supervisor, Susanne Neckermann, for her enthusiasm from the beginning, good ideas and useful feedback. A special word of acknowledgement also from the employment agency, that provided me feedback and offered me a sample group. Last but not least, I want to show my gratitude to all the people close to me that have supported me in every possible way.