Problems observed in this thesis is satisfaction with the quality of life of Croatian citizens and Croatian residents to work in other European Union member. Heršak (1998) argues that migration refers to the change of place in which it lives and in the general context of migration refers to the change or the general appearance of spatial mobility. As the Republic of Croatia faced with the problem of migration in which thousands of employees and unemployed citizens left their homes and native environment in search of a better quality of life for them and their future generations. The aim of this paper was to investigate the reasons for leaving Croatian residences, the economy of happiness, and the satisfaction with the quality of life and the environment in which they are currently residing. Survey was conducted through a survey questionnaire. Respondents were selected by random selection, and the results of the research were processed and presented via graphical and tabular views to better understand the research results. It is important to note that the respondents declared that they were in making decisions about leaving more influenced by nepotism and corruption in the Republic of Croatia of the unemployment rate and low monthly income. As for the satisfaction of quality of life, the respondents according to their subjective quality of life declared to have satisfied the quality of life in the other states of the European Union of the quality of life in Croatia. Also, although satisfied with the quality of life and the amount of their monthly income, the increase of these same monthly income of 30% would affect their level of happiness. Overall, the Croatians are satisfied with the quality of life and environment in other EU member states, but their separation from friends and family is difficult because the people of Croatia are extremely related to their families.