| Country | Action | Action Date | Effective Date |
|---|
| ALBANIA | Ratification | 03/06/1957 | |
| ALGERIA | Ratification | 19/10/1962 | |
| ALGERIA | Denunciation | 30/04/1984 | |
| Anguilla | Decision Resvd. | 18/12/1963 | |
| Antigua | Extension | 27/04/1966 | |
| Antilles | Extension | 11/04/1957 | |
| ARGENTINA | Ratification | 26/05/1936 | |
| Aruba | Extension | 01/01/1986 | 01/01/1986 |
| AUSTRALIA | Ratification | 24/12/1957 | |
| AUSTRIA | Ratification | 12/06/1924 | |
| Bahamas | Extension | 01/03/1967 | |
| BAHAMAS | Succession | 25/05/1976 | |
| BARBADOS | Succession | 02/10/1978 | 02/10/1978 |
| BARBADOS | Denunciation | 04/01/2000 | 04/01/2001 |
| BELGIUM | Ratification | 13/06/1928 | |
| BELIZE | Succession | 15/12/1983 | 15/12/1983 |
| BELIZE | Denunciation | 06/03/2000 | 06/03/2001 |
| Bermuda | Extension | 21/05/1964 | |
| British Guiana | Extension | 07/07/1964 | |
| British Honduras | Extension | 18/12/1963 | |
| British Virgin Islands | Extension | 10/03/1965 | 10/03/1965 |
| Brunei | Extension | 26/04/1965 | |
| BULGARIA | Ratification | 06/03/1925 | |
| BULGARIA | Denunciation | 23/04/1980 | 23/04/1981 |
| BYELORUSSIA S S R | Ratification | 06/11/1956 | |
| CAMEROON | Ratification | 25/05/1970 | |
| CENTRAL AFRICAN REPUBLIC | Ratification | 09/06/1964 | |
| CHILE | Ratification | 18/10/1935 | |
| COLOMBIA | Ratification | 13/04/1983 | 13/04/1983 |
| COMOROS | Succession | 23/10/1978 | 23/10/1978 |
| CUBA | Ratification | 22/08/1935 | |
| CZECH REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Ratification | 31/08/1923 | |
| DJIBOUTI | Succession | 03/08/1978 | 03/08/1978 |
| Dominica | Extension | 12/06/1964 | |
| DOMINICAN REPUBLIC | Ratification | 04/02/1932 | |
| ESTONIA | Ratification | 08/09/1922 | 08/09/1922 |
| Falkland Islands | Extension | 18/12/1963 | |
| FRANCE | Ratification | 07/06/1951 | |
| French Overseas Territories | Extension | 27/11/1974 | |
| GABON | Ratification | 13/06/1961 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 20/03/1957 | |
| Gibraltar | Extension | 18/12/1963 | |
| Gilbert And Ellice Islands | Extension | 24/02/1964 | |
| Grenada | Extension | 13/04/1964 | |
| GRENADA | Succession | 09/07/1979 | |
| GUATEMALA | Ratification | 14/06/1988 | |
| Guernsey | Extension | 20/11/1963 | |
| GUINEA | Ratification | 12/12/1966 | |
| GUYANA | Succession | 08/06/1966 | |
| Hong Kong | Extension | 03/03/1980 | |
| HUNGARY | Ratification | 02/02/1927 | |
| IRELAND, REPUBLIC OF | Ratification | 26/05/1925 | |
| Isle of Man | Extension | 15/10/1963 | |
| ISRAEL | Ratification | 23/12/1953 | |
| ITALY | Ratification | 08/09/1924 | |
| ITALY | Denunciation | 28/07/1981 | |
| JAPAN | Ratification | 19/12/1923 | |
| Jersey | Extension | 12/06/1964 | |
| LUXEMBOURG | Ratification | 16/04/1928 | |
| Malta | Extension | 13/04/1964 | |
| MALTA | Ratification | 04/01/1965 | |
| Montserrat | Decision Resvd. | 12/06/1964 | |
| NETHERLANDS THE | Ratification | 28/11/1956 | |
| New Guinea | Extension | 08/07/1959 | |
| NEW ZEALAND | Ratification | 08/07/1947 | |
| NICARAGUA | Ratification | 12/04/1934 | |
| NICARAGUA | Denunciation | 02/11/1981 | |
| Norfolk Island | Extension | 08/07/1959 | |
| NORWAY | Ratification | 28/01/1957 | |
| NORWAY | Denunciation | 08/07/1980 | 08/07/1981 |
| PANAMA | Ratification | 19/06/1970 | |
| PANAMA | Denunciation | 05/07/2001 | 05/07/2002 |
| Papua | Extension | 08/07/1959 | |
| PAPUA NEW GUINEA | Succession | 01/05/1976 | |
| PERU | Ratification | 01/02/1960 | |
| POLAND | Ratification | 21/06/1924 | |
| ROUMANIA | Ratification | 10/11/1930 | |
| SENEGAL | Ratification | 22/10/1962 | |
| Seychelles | Extension | 24/02/1964 | |
| SEYCHELLES | Succession | 06/02/1978 | 06/02/1978 |
| SEYCHELLES | Denunciation | 07/03/2000 | 07/03/2001 |
| SLOVAK REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| Somaliland | Extension | 28/12/1953 | |
| SOVIET UNION | Ratification | 10/08/1956 | |
| SPAIN | Ratification | 29/08/1932 | |
| SRI LANKA | Ratification | 29/11/1991 | |
| SRI LANKA | Denunciation | 11/02/2000 | 11/02/2001 |
| St Helena | Extension | 24/02/1964 | |
| St Vincent | Extension | 29/12/1964 | |
| ST VINCENT AND THE GRENADINES | Ratification | 21/10/1998 | 31/05/1995 |
| SWEDEN | Ratification | 27/11/1923 | |
| UKRAINE | Ratification | 14/09/1956 | |
| UNITED KINGDOM | Ratification | 11/07/1963 | |
| UNITED KINGDOM | Denunciation | 07/06/2000 | 07/06/2001 |
| URUGUAY | Ratification | 06/06/1933 | |