| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ALGERIA | Ratification | 19/10/1962 | |
| ARGENTINA | Ratification | 24/09/1956 | |
| AUSTRALIA | Ratification | 24/12/1949 | |
| AUSTRIA | Ratification | 23/09/1973 | |
| AZERBAIJAN | Ratification | 11/03/1993 | 11/03/1994 |
| Bahamas | Extension | 26/10/1966 | |
| BELGIUM | Ratification | 16/03/1953 | |
| BOLIVIA | Ratification | 31/01/1977 | |
| BOSNIA AND HERZEGOVINA | Ratification | 02/06/1993 | 02/06/1993 |
| BRAZIL | Ratification | 25/04/1957 | |
| British Guiana | Extension | 22/03/1958 | |
| British Guiana | Reservation | 22/03/1958 | |
| British Honduras | Extension | 28/08/1964 | |
| BULGARIA | Ratification | 29/12/1949 | |
| BULGARIA | Denunciation | 13/03/1961 | |
| CANADA | Ratification | 24/08/1950 | |
| CENTRAL AFRICAN REPUBLIC | Ratification | 09/06/1964 | |
| CHINA | Declaration | 20/10/1999 | |
| COLOMBIA | Ratification | 31/10/1967 | |
| COSTA RICA | Ratification | 02/06/1960 | |
| CUBA | Ratification | 29/04/1952 | |
| CYPRUS | Ratification | 23/09/1960 | |
| CZECH REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Ratification | 12/05/1950 | |
| DENMARK | Ratification | 30/11/1972 | |
| DENMARK | Declaration | 30/11/1972 | |
| DJIBOUTI | Succession | 03/08/1978 | 03/08/1978 |
| DJIBOUTI | Declaration | 03/08/1978 | |
| DOMINICAN REPUBLIC | Ratification | 22/09/1953 | |
| ECUADOR | Ratification | 26/08/1975 | |
| ETHIOPIA | Ratification | 04/06/1963 | |
| FINLAND | Ratification | 23/11/1989 | 23/11/1990 |
| FRANCE | Ratification | 15/10/1952 | |
| French Overseas Territories | Accession | 27/11/1974 | |
| GEORGIA | Ratification | 11/09/2002 | 11/09/2003 |
| GERMANY FEDERAL REPUBLIC | Ratification | 22/06/1954 | |
| GHANA | Ratification | 04/04/1961 | |
| Gibraltar | Extension | 22/03/1958 | |
| GREECE | Ratification | 16/06/1955 | |
| GUATEMALA | Ratification | 13/02/1952 | |
| GUINEA BISSAU | Succession | 21/02/1977 | 31/01/1978 |
| HUNGARY | Ratification | 04/01/1994 | 04/01/1995 |
| INDIA | Ratification | 24/06/1959 | |
| INDONESIA | Ratification | 08/08/2002 | 08/08/2003 |
| IRAQ | Ratification | 22/06/1951 | |
| IRELAND, REPUBLIC OF | Ratification | 29/10/1969 | 29/10/1969 |
| ISRAEL | Ratification | 21/08/1959 | |
| ITALY | Ratification | 22/10/1952 | |
| ITALY | Denunciation | 09/08/1971 | |
| JAPAN | Ratification | 20/10/1953 | |
| KAZAKHSTAN | Ratification | 18/05/2001 | 18/05/2002 |
| KENYA | Ratification | 13/01/1964 | |
| KOREA REPUBLIC OF | Ratification | 27/12/2001 | 27/12/2002 |
| LEBANON | Ratification | 01/06/1977 | |
| LIBYA | Ratification | 20/06/1962 | |
| LITHUANIA | Ratification | 26/09/1994 | 26/09/1995 |
| LUXEMBOURG | Ratification | 03/03/1958 | |
| MALAYSIA | Ratification | 06/06/1974 | 06/06/1975 |
| Malta | Extension | 22/03/1958 | |
| MALTA | Ratification | 04/01/1965 | |
| Mauritius | Extension | 03/03/1964 | |
| Mauritius | Reservation | 03/03/1964 | |
| MOZAMBIQUE | Ratification | 06/06/1977 | 01/06/1978 |
| NETHERLANDS THE | Ratification | 07/03/1950 | |
| NETHERLANDS THE | Extension | 25/06/1951 | |
| NETHERLANDS THE | Declaration | 01/01/1986 | 01/01/1986 |
| NEW ZEALAND | Ratification | 03/12/1949 | |
| NICARAGUA | Ratification | 01/10/1981 | 01/10/1982 |
| Nigeria | Extension | 06/04/1959 | |
| NIGERIA | Ratification | 16/06/1961 | |
| Norfolk Island | Not Applicable | 15/06/1973 | |
| NORWAY | Ratification | 04/07/1949 | |
| PAKISTAN | Ratification | 14/02/1951 | |
| PANAMA | Ratification | 19/06/1970 | |
| Papua New Guinea | Extension | 21/06/1973 | |
| PERU | Ratification | 06/04/1962 | |
| PHILIPPINES | Ratification | 29/12/1953 | |
| PORTUGAL | Ratification | 23/06/1972 | |
| PORTUGAL | Declaration | 04/10/1999 | |
| ROMANIA | Ratification | 06/06/1973 | |
| SAN MARINO | Ratification | 23/05/1985 | 23/05/1986 |
| SAO TOME AND PRINCIPE | Ratification | 01/06/1982 | 01/06/1982 |
| Sierra Leone | Extension | 06/05/1958 | |
| SIERRA LEONE | Ratification | 13/06/1961 | |
| SINGAPORE | Ratification | 25/10/1965 | |
| Singapore, State of | Extension | 22/03/1958 | |
| SLOVAK REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| SLOVENIA | Succession | 29/05/1992 | 29/05/1992 |
| SPAIN | Ratification | 30/05/1960 | |
| Suriname | Extension | 25/06/1951 | |
| SURINAME | Succession | 15/06/1976 | 31/12/1982 |
| SWAZILAND | Ratification | 05/09/1966 | |
| SWEDEN | Ratification | 25/11/1949 | |
| SWITZERLAND | Ratification | 19/01/1952 | |
| SYRIA | Ratification | 20/06/1962 | |
| TANGANYIKA | Ratification | 30/01/1962 | |
| Tanganyika | Extension | 30/01/1962 | |
| TANGANYIKA AND ZANZIBAR | Ratification | 22/06/1964 | |
| THAILAND | Ratification | 26/02/1969 | |
| TUNISIA | Ratification | 11/10/1968 | |
| TURKEY | Ratification | 14/07/1950 | |
| Uganda | Extension | 22/03/1958 | |
| Uganda | Reservation | 22/03/1958 | |
| UNITED ARAB REPUBLIC | Ratification | 03/07/1954 | |
| UNITED KINGDOM | Ratification | 10/08/1949 | |
| UNITED KINGDOM | Extension | 22/03/1958 | |
| UNITED KINGDOM | Extension | 23/03/1958 | |
| UNITED KINGDOM | Extension | 06/05/1958 | |
| UNITED KINGDOM | Extension | 06/04/1959 | |
| UNITED KINGDOM | Extension | 03/03/1964 | |
| UNITED KINGDOM | Extension | 28/08/1964 | |
| UNITED KINGDOM | Extension | 26/10/1966 | |
| UNITED KINGDOM | Denunciation | 06/08/1971 | |
| VENEZUELA | Ratification | 10/11/1964 | |
| YUGOSLAVIA | Ratification | 23/07/1958 | |
| YUGOSLAVIA, FEDERAL REPUBLIC OF | Ratification | 24/11/2000 | 24/11/2000 |
| ZAIRE | Ratification | 16/06/1969 | 16/06/1970 |