| Country | Action | Action Date | Effective Date |
|---|
| ALBANIA | Accession | 09/08/2010 | 07/11/2010 |
| ALGERIA | Accession | 31/10/1963 | |
| ALGERIA | Reservation | 31/10/1963 | |
| Antigua | Extension | 14/01/1958 | 14/04/1958 |
| Antilles | Extension | 07/03/1958 | |
| ARGENTINA | Signature | 04/06/1954 | |
| ARGENTINA | Ratification | 19/12/1986 | 19/03/1987 |
| AUSTRALIA | Accession | 06/01/1967 | 06/04/1967 |
| AUSTRIA | Signature | 04/06/1954 | |
| AUSTRIA | Ratification | 30/03/1956 | |
| Barbados | Extension | 16/06/1959 | 14/09/1959 |
| BARBADOS | Succession | 05/03/1971 | |
| Belgian Congo | Extension | 21/02/1955 | |
| Belgian Congo | Reservation | 21/02/1955 | |
| BELGIUM | Signature | 04/06/1954 | |
| BELGIUM | Ratification | 21/02/1955 | |
| British Guiana | Extension | 05/02/1962 | 06/05/1962 |
| British Honduras | Extension | 12/09/1960 | 11/12/1960 |
| British Virgin Islands | Extension | 14/01/1958 | 14/04/1958 |
| Brunei | Extension | 14/01/1958 | 14/04/1958 |
| BULGARIA | Accession | 07/10/1959 | |
| BULGARIA | Reservation | 07/10/1959 | |
| BULGARIA | Withdrawal Res. | 06/05/1994 | |
| CAMBODIA | Signature | 04/06/1954 | |
| CENTRAL AFRICAN REPUBLIC | Accession | 15/10/1962 | |
| CHILE | Accession | 15/08/1974 | 13/11/1974 |
| Cook Islands | Extension | 21/05/1963 | |
| COSTA RICA | Signature | 20/07/1954 | |
| COSTA RICA | Ratification | 04/09/1963 | |
| CUBA | Signature | 04/06/1954 | |
| CUBA | Ratification | 29/06/1964 | |
| CUBA | Reservation | 29/06/1964 | |
| Cyprus | Extension | 07/08/1957 | 05/11/1957 |
| CYPRUS | Succession | 16/05/1963 | |
| CZECH REPUBLIC | Succession | 02/06/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Accession | 08/03/1967 | |
| CZECHOSLOVAKIA | Reservation | 08/03/1967 | |
| DENMARK | Accession | 13/10/1955 | |
| Dominica | Extension | 14/01/1958 | 14/04/1958 |
| ECUADOR | Signature | 04/06/1954 | |
| ECUADOR | Ratification | 30/08/1962 | |
| EGYPT | Signature | 04/06/1954 | |
| EGYPT | Ratification | 04/04/1957 | |
| FIJI | Accession | 31/10/1972 | 29/01/1973 |
| FIJI | Reservation | 31/10/1972 | |
| FINLAND | Accession | 21/06/1962 | |
| FRANCE | Signature | 04/06/1954 | |
| FRANCE | Ratification | 24/04/1959 | |
| GERMANY FEDERAL REPUBLIC | Signature | 04/06/1954 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 16/09/1957 | |
| GHANA | Accession | 16/06/1958 | |
| Gibraltar | Extension | 14/01/1958 | 14/04/1958 |
| GREECE | Accession | 15/01/1974 | 15/04/1974 |
| GREECE | Declaration | 15/01/1974 | |
| Grenada | Extension | 14/01/1958 | 14/04/1958 |
| HAITI | Signature | 04/06/1954 | |
| HAITI | Ratification | 12/02/1958 | |
| HONDURAS | Signature | 15/07/1954 | |
| Hong Kong | Extension | 11/11/1960 | 09/02/1961 |
| HUNGARY | Accession | 29/10/1963 | |
| HUNGARY | Reservation | 29/10/1963 | |
| INDIA | Accession | 15/02/1957 | |
| IRAN | Accession | 03/04/1968 | |
| IRELAND, REPUBLIC OF | Accession | 14/08/1967 | |
| ISRAEL | Accession | 01/08/1957 | |
| ITALY | Signature | 04/06/1954 | |
| ITALY | Ratification | 12/02/1958 | |
| ITALY | Statement | 13/01/1960 | |
| Jamaica | Extension | 07/08/1957 | 05/11/1957 |
| JAMAICA | Succession | 11/11/1963 | |
| JAPAN | Signature | 02/12/1954 | |
| JAPAN | Ratification | 07/09/1955 | |
| JAPAN | Notification | 16/09/1968 | |
| JORDAN | Accession | 18/12/1957 | |
| Kenya | Extension | 14/01/1958 | 14/04/1958 |
| Kenya | Reservation | 14/01/1958 | 14/04/1958 |
| Land Berlin | Extension | 16/09/1957 | |
| LEBANON | Accession | 16/03/1971 | 14/06/1971 |
| LIBERIA | Accession | 16/09/2005 | 15/12/2005 |
| LIECHTENSTEIN | Extension | 16/06/1975 | |
| LITHUANIA | Accession | 01/12/2005 | 01/03/2006 |
| LUXEMBOURG | Signature | 06/12/1954 | |
| LUXEMBOURG | Ratification | 21/11/1956 | |
| Macao | Extension | 30/03/1983 | 28/06/1983 |
| Macao | Extension | 29/09/1999 | 20/12/1999 |
| Malaya | Extension | 07/08/1957 | 05/11/1957 |
| MALAYA | Succession | 07/05/1958 | |
| MALI | Accession | 11/06/1974 | 09/09/1974 |
| Malta | Extension | 07/08/1957 | 05/11/1957 |
| MALTA | Succession | 29/07/1968 | |
| MALTA | Reservation | 29/07/1968 | |
| Mauritius | Extension | 14/01/1958 | 14/04/1958 |
| MAURITIUS | Succession | 18/07/1969 | 12/03/1968 |
| MEXICO | Signature | 04/06/1954 | |
| MEXICO | Ratification | 13/06/1957 | |
| MONACO | Signature | 04/06/1954 | |
| MONTENEGRO | Succession | 23/10/2006 | 03/06/2006 |
| Montserrat | Extension | 14/01/1958 | 14/04/1958 |
| MOROCCO | Accession | 25/09/1957 | |
| NEPAL | Accession | 21/09/1960 | |
| NETHERLANDS THE | Signature | 04/06/1954 | |
| NETHERLANDS THE | Ratification | 07/03/1958 | |
| New Guinea | Extension | 07/03/1958 | |
| NEW ZEALAND | Accession | 17/08/1962 | |
| Nigeria | Extension | 14/01/1958 | 14/04/1958 |
| NIGERIA | Succession | 26/06/1961 | |
| Niue Island | Extension | 21/05/1963 | |
| North Borneo | Extension | 07/08/1957 | 05/11/1957 |
| NORWAY | Accession | 10/10/1961 | |
| PANAMA | Signature | 04/06/1954 | |
| PERU | Accession | 16/01/1959 | |
| PHILIPPINES | Signature | 04/06/1954 | |
| PHILIPPINES | Ratification | 09/02/1960 | |
| POLAND | Accession | 16/03/1960 | |
| POLAND | Reservation | 16/06/1960 | |
| PORTUGAL | Accession | 18/09/1958 | |
| PORTUGAL | Notification | 02/08/1965 | |
| PORTUGAL | Communication | 29/09/1999 | |
| Portuguese Overseas Provinces | Accession | 18/09/1958 | |
| ROUMANIA | Accession | 26/01/1961 | |
| ROUMANIA | Reservation | 26/01/1961 | |
| Ruanda Urundi | Extension | 21/02/1955 | |
| Ruanda Urundi | Reservation | 21/02/1955 | |
| RWANDA | Succession | 01/12/1964 | |
| SALVADOR | Accession | 18/06/1958 | |
| Sarawak | Extension | 14/01/1958 | 14/04/1958 |
| SENEGAL | Accession | 19/04/1972 | 18/07/1972 |
| Seychelles | Extension | 07/08/1957 | 05/11/1957 |
| Sierra Leone | Extension | 07/08/1957 | 05/11/1957 |
| SIERRA LEONE | Succession | 13/03/1962 | |
| Singapore | Extension | 07/08/1957 | 05/11/1957 |
| SLOVAK REPUBLIC | Succession | 28/05/1993 | 01/01/1993 |
| SOLOMON ISLANDS | Succession | 03/09/1981 | |
| Solomon Islands Protectorate | Extension | 14/01/1958 | 14/04/1958 |
| Somaliland Protectorate | Extension | 07/08/1957 | 05/11/1957 |
| SOVIET UNION | Accession | 17/08/1959 | |
| SOVIET UNION | Declaration | 17/08/1959 | |
| SPAIN | Accession | 05/09/1958 | |
| St Christopher, Nevis and Anguilla | Extension | 09/01/1960 | 09/04/1961 |
| St Helena | Extension | 14/01/1958 | 14/04/1958 |
| St Vincent | Extension | 14/01/1958 | 14/04/1958 |
| Surinam | Extension | 07/03/1958 | |
| SWEDEN | Signature | 04/06/1954 | |
| SWEDEN | Ratification | 11/06/1957 | |
| SWITZERLAND | Signature | 04/06/1954 | |
| SWITZERLAND | Ratification | 23/05/1956 | |
| SWITZERLAND | Statement | 13/01/1960 | |
| SWITZERLAND | Declaration | 16/06/1975 | |
| SYRIA | Accession | 26/03/1959 | |
| Tanganyika | Extension | 14/01/1958 | 14/04/1958 |
| Tanganyika | Reservation | 14/01/1958 | 14/04/1958 |
| TANZANIA | Accession | 22/06/1964 | |
| TANZANIA | Reservation | 22/06/1964 | |
| The Gambia | Extension | 14/01/1958 | 14/04/1958 |
| Tonga | Extension | 07/08/1957 | 05/11/1957 |
| TONGA | Succession | 11/11/1977 | |
| Trinidad And Tobago | Extension | 15/09/1961 | 14/12/1961 |
| TRINIDAD AND TOBAGO | Succession | 11/04/1966 | 31/08/1962 |
| TUNISIA | Accession | 20/06/1974 | 18/09/1974 |
| TUNISIA | Reservation | 20/06/1974 | |
| TURKEY | Accession | 26/04/1983 | 25/07/1983 |
| Uganda | Extension | 14/01/1958 | 14/04/1958 |
| Uganda | Reservation | 14/01/1958 | 14/04/1958 |
| UGANDA | Accession | 15/04/1965 | |
| UGANDA | Reservation | 15/04/1965 | |
| UNITED KINGDOM | Signature | 04/06/1954 | |
| UNITED KINGDOM | Reservation | 04/06/1954 | |
| UNITED KINGDOM | Ratification | 27/02/1956 | |
| UNITED KINGDOM | Withdrawal Res. | 04/03/1959 | 01/01/1959 |
| URUGUAY | Signature | 04/06/1954 | |
| VATICAN CITY | Signature | 04/06/1954 | |
| YUGOSLAVIA | Accession | 10/07/1958 | |
| YUGOSLAVIA | Statement | 13/01/1960 | |
| YUGOSLAVIA | Succession | 12/03/2001 | 27/04/1992 |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Succession | 12/03/2001 | 27/04/1992 |
| Zanzibar | Extension | 07/08/1957 | 05/11/1957 |