Human rights and fundamental freedoms are the moral and legal framework for a dignified life of every individual. These rights and freedoms are inherent to human beings and therefore called natural rights. The roots of the human rights doctrine date back to ancient times. Remarkable development of this legal area was recorded after World War II. So, the horrors of war have raised awareness of the need of protection of human rights at the international level. The Universal Declaration of Human Rights was adopted in 1948. and it provides an international framework for the development of constitutional law at the national level. Human rights and fundamental freedoms are elaborated in Chapter 3 of the Constitution of the Republic of Croatia, and are divided into: personal and political freedoms, i.e. rights of the first generation and the economic, social and cultural rights, i.e. rights of another generation. Art. 70. of the Constitution recognizes the right to a healthy environment which announces the expansion of the scope of human rights of the third generation in the Constitution of Republic of Croatia.