| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ALBANIA | Ratification | 02/08/2001 | 02/08/2002 |
| ANGOLA | Succession | 04/06/1976 | |
| Anguilla | Extension | 29/05/1963 | |
| Antigua | Extension | 04/06/1962 | |
| ARGENTINA | Ratification | 14/03/1950 | |
| ARMENIA | Ratification | 27/01/2006 | 27/01/2007 |
| AUSTRALIA | Ratification | 09/03/1931 | |
| AUSTRALIA | Declaration | 21/06/1973 | |
| AUSTRIA | Ratification | 15/03/1974 | |
| Bahamas | Extension | 03/08/1964 | |
| BAHAMAS | Succession | 25/05/1976 | |
| Barbados | Extension | 04/06/1962 | |
| BARBADOS | Succession | 08/05/1967 | |
| Basutoland | Extension | 26/11/1962 | |
| Bechuanaland | Extension | 08/02/1965 | |
| BELARUS | Ratification | 15/09/1993 | 15/09/1994 |
| Belgian Congo | Extension | 07/07/1955 | |
| BELGIUM | Ratification | 11/08/1937 | |
| BELGIUM | Declaration | 07/07/1955 | |
| BELIZE | Succession | 15/12/1983 | |
| BENIN | Ratification | 12/12/1960 | |
| Bermuda | Decision Resvd. | 03/04/1963 | |
| BOLIVIA | Ratification | 19/07/1954 | |
| BRAZIL | Ratification | 25/04/1957 | |
| British Guiana | Ratification | 04/06/1962 | |
| British Honduras | Extension | 04/06/1962 | |
| British Virgin Islands | Extension | 05/10/1962 | |
| Brunei | Decision Resvd. | 03/08/1964 | |
| BULGARIA | Ratification | 04/06/1935 | |
| BURKINA FASO | Ratification | 21/11/1960 | |
| BURMA | Ratification | 21/05/1954 | |
| BURUNDI | Ratification | 11/03/1963 | |
| CAMEROON | Succession | 07/06/1960 | |
| CANADA | Signature | 16/06/1928 | |
| CANADA | Ratification | 25/04/1935 | |
| CENTRAL AFRICAN REPUBLIC | Ratification | 27/10/1960 | |
| CHAD | Ratification | 10/11/1960 | |
| CHILE | Ratification | 31/05/1933 | |
| CHINA | Ratification | 05/05/1930 | |
| CHINA | Declaration | 20/10/1999 | |
| COLOMBIA | Ratification | 20/06/1933 | |
| COMOROS | Ratification | 23/10/1978 | |
| CONGO | Ratification | 10/11/1960 | |
| COSTA RICA | Ratification | 16/03/1972 | |
| COTE D'IVOIRE | Ratification | 21/11/1960 | |
| CUBA | Ratification | 24/02/1936 | |
| CZECH REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Ratification | 12/06/1950 | |
| DJIBOUTI | Succession | 03/08/1978 | 03/08/1978 |
| Dominica | Extension | 04/06/1962 | |
| DOMINICA, COMMONWEALTH OF | Ratification | 28/02/1983 | 28/02/1983 |
| DOMINICAN REPUBLIC | Ratification | 05/12/1956 | |
| ECUADOR | Ratification | 06/07/1954 | |
| EGYPT | Ratification | 10/05/1960 | |
| Falkland Islands | Extension | 04/06/1962 | |
| Fiji | Extension | 26/06/1962 | |
| FIJI | Ratification | 19/04/1974 | |
| FRANCE | Ratification | 18/09/1930 | |
| FRANCE | Declaration | 19/03/1954 | |
| French Cameroons | Extension | 19/03/1954 | |
| French Equatorial Africa | Extension | 19/03/1954 | |
| French India | Extension | 19/03/1954 | |
| French Somaliland | Extension | 19/03/1954 | |
| French Togoland | Extension | 19/03/1954 | |
| French West Africa | Extension | 19/03/1954 | |
| GABON | Ratification | 14/10/1960 | |
| GERMANY | Ratification | 30/05/1929 | |
| GERMANY FEDERAL REPUBLIC | Re-Application | 01/01/1905 | |
| GHANA | Ratification | 02/07/1959 | |
| Gibraltar | Extension | 04/06/1962 | |
| GRENADA | Ratification | 09/07/1979 | |
| GUATEMALA | Ratification | 04/05/1961 | |
| GUINEA | Ratification | 21/01/1959 | |
| GUINEA BISSAU | Succession | 21/02/1977 | |
| GUYANA | Ratification | 08/06/1966 | |
| Hong Kong | Extension | 04/06/1962 | |
| HUNGARY | Ratification | 30/07/1932 | |
| INDIA | Ratification | 10/01/1955 | |
| IRAQ | Ratification | 26/11/1962 | |
| IRELAND, REPUBLIC OF | Ratification | 03/06/1930 | |
| ITALY | Ratification | 09/09/1930 | |
| JAMAICA | Ratification | 08/07/1963 | |
| JAPAN | Ratification | 29/04/1971 | |
| Kenya | Extension | 04/06/1962 | |
| KENYA | Succession | 13/01/1964 | |
| KOREA REPUBLIC OF | Ratification | 27/12/2001 | 27/12/2002 |
| LEBANON | Ratification | 26/07/1962 | |
| LESOTHO | Ratification | 31/10/1966 | |
| LIBYA | Ratification | 27/05/1971 | |
| LUXEMBOURG | Ratification | 03/03/1958 | |
| Madagascar | Extension | 19/03/1954 | |
| MADAGASCAR | Succession | 01/11/1960 | |
| MALAWI | Succession | 22/03/1965 | |
| MALAWI | Declaration | 22/03/1965 | |
| MALI | Ratification | 22/09/1960 | |
| Malta | Ratification | 26/06/1962 | |
| MALTA | Succession | 04/01/1965 | |
| MAURITANIA | Ratification | 20/06/1961 | |
| Mauritius | Extension | 04/06/1962 | |
| MAURITIUS | Succession | 02/12/1969 | |
| MEXICO | Ratification | 12/05/1934 | |
| Montserrat | Extension | 12/06/1964 | |
| MOROCCO | Ratification | 14/03/1958 | |
| NETHERLANDS THE | Ratification | 10/11/1936 | |
| New Caledonia | Extension | 19/03/1954 | |
| NEW ZEALAND | Ratification | 29/03/1938 | |
| NICARAGUA | Ratification | 12/04/1934 | |
| NIGER | Ratification | 27/02/1961 | |
| NIGERIA | Ratification | 16/06/1961 | |
| Northern Rhodesia | Extension | 15/01/1963 | |
| NORWAY | Ratification | 07/07/1933 | |
| Nyasaland | Extension | 07/12/1962 | |
| PANAMA | Ratification | 19/06/1970 | |
| Papua New Guinea | Extension | 21/06/1973 | |
| PARAGUAY | Ratification | 24/06/1964 | |
| PERU | Ratification | 04/04/1962 | |
| PORTUGAL | Ratification | 10/11/1959 | |
| PORTUGAL | Declaration | 04/10/1999 | |
| Ruanda Urundi | Extension | 07/07/1955 | |
| RWANDA | Ratification | 18/09/1962 | |
| SAINT LUCIA | Succession | 14/05/1980 | |
| Sarawak | Extension | 23/08/1962 | |
| SENEGAL | Ratification | 04/11/1960 | |
| Seychelles | Extension | 04/06/1962 | |
| SEYCHELLES | Ratification | 06/02/1978 | |
| SIERRA LEONE | Ratification | 15/06/1961 | |
| SLOVAK REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| Solomon Islands | Extension | 26/06/1962 | |
| SOLOMON ISLANDS | Succession | 06/08/1985 | |
| SOUTH AFRICA | Ratification | 28/12/1932 | |
| SPAIN | Ratification | 08/04/1930 | |
| SRI LANKA | Ratification | 09/06/1971 | |
| St Helena | Extension | 05/10/1962 | |
| St Kitts | Extension | 29/05/1963 | |
| St Lucia | Extension | 04/06/1962 | |
| St Pierre and Miquelon | Extension | 19/03/1954 | |
| St Vincent | Extension | 04/06/1962 | |
| ST VINCENT AND THE GRENADINES | Ratification | 21/10/1998 | 31/05/1995 |
| SUDAN | Ratification | 18/06/1957 | |
| SWAZILAND | Ratification | 26/04/1978 | |
| SWITZERLAND | Ratification | 07/05/1947 | |
| SYRIA | Ratification | 10/05/1960 | |
| TANZANIA | Ratification | 19/11/1962 | |
| The Gambia | Extension | 05/10/1962 | |
| TOGO | Ratification | 07/06/1960 | |
| TUNISIA | Ratification | 15/05/1957 | |
| TURKEY | Ratification | 29/01/1975 | |
| UGANDA | Ratification | 04/06/1963 | |
| UNITED KINGDOM | Signature | 16/06/1928 | |
| UNITED KINGDOM | Ratification | 14/06/1929 | |
| UNITED KINGDOM | Declaration | 08/02/1965 | |
| UNITED KINGDOM | Denunciation | 25/07/1985 | 25/07/1986 |
| URUGUAY | Ratification | 06/07/1933 | |
| VENEZUELA | Extension | 20/11/1944 | |
| VIETNAM | Ratification | 14/06/1955 | |
| ZAIRE | Ratification | 20/09/1960 | |
| ZAMBIA | Ratification | 02/12/1964 | |
| Zanzibar | Extension | 22/06/1964 | |
| ZIMBABWE | Ratification | 16/09/1993 | 16/09/1994 |