(co-autored with: Prof. D. Błaszczuk, Dr. R. Skikiewicz). The book presents the results from the national survey among Polish entreprenurs regarding obstacles to doing business in Poland caused by lack of trust. A macroeconomic model describing the gap in Polish GDP due to lack of trust (PLN 281 bln in 2015) is one of the outcomes of research. It also takes under consideration the diffferences between market norms and social norms when analysing trust level -something many other nresearch studies do not distinguish, incl. Puntan, Fukuyama etc.