| Country | Action | Action Date | Effective Date |
|---|
| ALBANIA | Ratification | 03/06/1957 | |
| Anguilla | Extension | 27/03/1950 | |
| Anguilla | Declaration | 27/03/1950 | |
| Antigua | Extension | 27/03/1950 | |
| Antigua | Declaration | 27/03/1950 | |
| Bahamas | Extension | 27/03/1950 | |
| Bahamas | Declaration | 27/03/1950 | |
| BANGLADESH | Ratification | 22/06/1972 | |
| BANGLADESH | Declaration | 22/06/1972 | |
| Bermuda | Extension | 21/05/1964 | |
| British Honduras | Extension | 27/03/1950 | |
| British Honduras | Declaration | 27/03/1950 | |
| British Virgin Islands | Extension | 27/03/1950 | |
| British Virgin Islands | Declaration | 27/03/1950 | |
| BULGARIA | Ratification | 22/07/1960 | |
| BULGARIA | Denunciation | 23/04/1980 | 23/04/1981 |
| BURUNDI | Ratification | 30/07/1971 | |
| BYELORUSSIA S S R | Ratification | 06/11/1956 | |
| CHINA | Ratification | 21/02/1940 | |
| CUBA | Ratification | 07/09/1954 | |
| Dominica | Extension | 27/03/1950 | |
| Dominica | Declaration | 27/03/1950 | |
| Falkland Islands | Extension | 27/03/1950 | |
| Falkland Islands | Declaration | 27/03/1950 | |
| Falkland Islands | Declaration | 27/01/1978 | 27/01/1978 |
| Fiji | Extension | 27/03/1950 | |
| Fiji | Declaration | 27/03/1950 | |
| FIJI | Ratification | 19/04/1974 | |
| GHANA | Ratification | 20/05/1957 | |
| Gibraltar | Extension | 27/03/1950 | |
| Gibraltar | Declaration | 27/03/1950 | |
| Gibraltar | Declaration | 21/02/1979 | 21/02/1979 |
| Gilbert And Ellice Islands | Extension | 27/03/1950 | |
| Gilbert And Ellice Islands | Declaration | 27/03/1950 | |
| Gilbert And Ellice Islands | Declaration | 15/12/1978 | 15/12/1978 |
| Grenada | Extension | 27/03/1950 | |
| Grenada | Declaration | 27/03/1950 | |
| GUATEMALA | Ratification | 13/06/1989 | 13/06/1990 |
| Hong Kong | Extension | 27/03/1950 | |
| Hong Kong | Declaration | 27/03/1950 | |
| Hong Kong | Declaration | 23/12/1980 | |
| IRAQ | Ratification | 05/07/1960 | |
| IRAQ | Denunciation | 13/02/1985 | 13/02/1986 |
| ITALY | Ratification | 22/10/1952 | |
| ITALY | Denunciation | 28/07/1981 | |
| KENYA | Ratification | 13/01/1964 | |
| LEBANON | Ratification | 01/06/1977 | |
| LIBYA | Ratification | 27/05/1971 | |
| LUXEMBOURG | Ratification | 03/03/1958 | |
| Mauritius | Extension | 27/03/1950 | |
| Mauritius | Declaration | 27/03/1950 | |
| MAURITIUS | Ratification | 02/12/1969 | |
| MONGOLIA | Ratification | 03/06/1969 | 03/06/1970 |
| Montserrat | Extension | 27/03/1950 | |
| Montserrat | Declaration | 27/03/1950 | |
| New Guinea | Reservation | 15/06/1973 | |
| NEW ZEALAND | Ratification | 08/07/1947 | 08/07/1948 |
| NIGERIA | Ratification | 16/06/1961 | |
| Norfolk Island | Not Applicable | 15/06/1973 | |
| NORWAY | Ratification | 26/08/1938 | |
| NORWAY | Denunciation | 08/07/1980 | 08/07/1981 |
| PAKISTAN | Ratification | 26/05/1955 | |
| Papua | Reservation | 15/06/1973 | |
| PARAGUAY | Ratification | 21/03/1966 | |
| PERU | Ratification | 04/04/1962 | |
| PHILIPPINES | Ratification | 17/11/1960 | |
| ROUMANIA | Ratification | 06/06/1973 | |
| Seychelles | Extension | 27/03/1950 | |
| Seychelles | Declaration | 27/03/1950 | |
| SIERRA LEONE | Ratification | 15/06/1961 | |
| Solomon Islands Protectorate | Extension | 27/03/1950 | |
| Solomon Islands Protectorate | Declaration | 27/03/1950 | |
| Southern Rhodesia | Extension | 27/03/1950 | |
| Southern Rhodesia | Declaration | 27/03/1950 | |
| SOVIET UNION | Ratification | 10/08/1956 | |
| SPAIN | Ratification | 05/05/1971 | |
| St Helena | Extension | 27/03/1950 | |
| St Helena | Declaration | 27/03/1950 | |
| St Kitts Nevis Anguilla | Extension | 27/03/1950 | |
| St Kitts Nevis Anguilla | Declaration | 27/03/1950 | |
| St Lucia | Extension | 27/03/1950 | |
| St Lucia | Declaration | 27/03/1950 | |
| St Vincent | Extension | 27/03/1950 | |
| St Vincent | Declaration | 27/03/1950 | |
| Swaziland | Extension | 20/08/1963 | |
| SWAZILAND | Ratification | 26/04/1978 | |
| TANGANYIKA AND ZANZIBAR | Ratification | 22/06/1964 | |
| TANZANIA | Ratification | 30/01/1962 | |
| TUNISIA | Ratification | 14/04/1970 | |
| TURKEY | Ratification | 08/10/1991 | 08/10/1991 |
| UKRAINE | Ratification | 14/09/1956 | |
| UNITED KINGDOM | | | |
| URUGUAY | Ratification | 18/03/1954 | |
| YEMEN, PEOPLES'S DEMOCRATIC REPUBLIC OF | Ratification | 14/04/1969 | |