The bachelor thesis deals with the concepts of human capital and investment in human capital in macroeconomic terms. In the first part, this concept is mapped by a few definitions. Then I describe the history, the emergence of the first ideas connected with human capital, main leaders and their key ideas. Investments in human capital, i.e. simply in education, is presented in the concretion. The resulting comparison is performed on the OECD (Organisation for Economic Co-operation and Development) states. The analysis compares the investment in education and economic maturity of theindividual states. Investments in education are intended by expenditure (private and public) on education as a percentage of GDP. In the thesis, economic maturity...