Switzerland was not a full UN member until 2002!

On September 10, 2002, Switzerland became a full member of the United Nations, after a referendum supporting full membership won in a close vote six months earlier; Swiss voters had rejected membership by a 3-to-1 margin in 1986. The 2002 vote made Switzerland the first country to join based on a popular vote.
Prior to its formal accession to the United Nations, Switzerland had maintained an observer role at the UN's General Assembly and its Economic and Social Council. Prior to full membership it had no right to a seat as one of the elected members of the UN Security Council.
Switzerland has fully participated within many of the UN's specialised institutions, including the Economic Commission for Europe, United Nations Environment Programme, the UN High Commissioner for Refugees, UN Educational, Scientific and Cultural Organization, UN Conference on Trade and Development, UN Industrial Development Organization, and the Universal Postal Union. Switzerland has also furnished military observers and medical teams to several UN operations.