| Country | Action | Action Date | Effective Date |
|---|
| ABYSSINIA | Signature | 17/06/1925 | |
| ABYSSINIA | Ratification | 07/10/1935 | |
| ABYSSINIA | Statement | 30/09/1983 | |
| AFGHANISTAN | Accession | 20/09/1986 | 09/12/1986 |
| ALBANIA | Accession | 12/12/1989 | 20/12/1989 |
| ALGERIA | Accession | 02/03/1992 | 02/03/1992 |
| ALGERIA | Reservation | 02/03/1992 | |
| ANGOLA | Accession | 30/10/1990 | 08/11/1990 |
| ANGOLA | Declaration | 30/10/1990 | |
| ANTIGUA AND BARBUDA | Succession | 01/02/1989 | 06/01/1989 |
| ARGENTINA | Accession | 12/05/1969 | |
| AUSTRALIA | Non-acceptance | 01/01/1905 | |
| AUSTRALIA | Accession | 23/01/1930 | |
| AUSTRALIA | Reservation | 23/01/1930 | |
| AUSTRALIA | Statement | 24/08/1983 | |
| AUSTRALIA | Withdrawal Res. | 09/12/1986 | |
| AUSTRIA | Signature | 17/06/1925 | |
| AUSTRIA | Ratification | 09/05/1928 | |
| BAHRAIN | Accession | 09/11/1988 | 09/12/1988 |
| BAHRAIN | Reservation | 09/11/1988 | 09/12/1988 |
| BANGLADESH | Accession | 09/01/1989 | 20/05/1989 |
| BARBADOS | Succession | 16/07/1976 | 19/08/1976 |
| BARBADOS | Withdrawal Res. | 16/07/1976 | |
| BELGIUM | Signature | 17/06/1925 | |
| BELGIUM | Ratification | 04/12/1928 | |
| BELGIUM | Reservation | 04/12/1928 | |
| BENIN | Accession | 04/12/1986 | 09/12/1986 |
| BHUTAN | Accession | 06/07/1978 | 19/02/1979 |
| BOLIVIA | Accession | 14/01/1985 | 13/08/1985 |
| BRAZIL | Signature | 17/06/1925 | |
| BRAZIL | Ratification | 28/08/1970 | |
| BRITISH EMPIRE | Statement | 01/01/1905 | |
| BRITISH EMPIRE | Signature | 17/06/1925 | |
| BRITISH EMPIRE | Declaration | 17/06/1925 | |
| BRITISH EMPIRE | Ratification | 09/04/1930 | |
| BRITISH EMPIRE | Reservation | 09/04/1930 | |
| BRITISH EMPIRE | Withdrawal Res. | 07/11/1991 | |
| BRITISH EMPIRE | Withdrawal Res. | 20/12/2002 | 20/12/2002 |
| BULGARIA | Signature | 17/06/1925 | |
| BULGARIA | Ratification | 07/03/1934 | |
| BULGARIA | Reservation | 07/03/1934 | |
| BULGARIA | Statement | 21/04/1983 | |
| CAMEROON | Accession | 20/07/1989 | 20/07/1989 |
| Canada | Signature | 17/06/1925 | |
| Canada | Ratification | 06/05/1930 | |
| Canada | Reservation | 06/05/1930 | |
| CENTRAL AFRICAN REPUBLIC | Accession | 30/07/1970 | 31/07/1970 |
| CEYLON | Succession | 15/01/1954 | 20/01/1954 |
| CHILE | Signature | 17/06/1925 | |
| CHILE | Ratification | 02/07/1935 | |
| CHILE | Reservation | 02/07/1935 | |
| CHINA | Accession | 07/08/1929 | |
| CHINA | Reservation | 07/08/1929 | |
| COLOMBIA | Accession | 24/11/2015 | 24/11/2015 |
| COSTA RICA | Ratification | 17/06/2009 | 17/06/2009 |
| CROATIA | Accession | 18/12/2006 | 18/12/2006 |
| CUBA | Accession | 24/06/1966 | 07/07/1966 |
| CUBA | Statement | 13/07/1983 | |
| Curacao | Extension | 31/10/1930 | |
| CYPRUS | Succession | 21/11/1966 | |
| CZECHOSLOVAKIA | Signature | 17/06/1925 | |
| CZECHOSLOVAKIA | Ratification | 16/08/1938 | |
| CZECHOSLOVAKIA | Reservation | 16/08/1938 | |
| CZECHOSLOVAKIA | Statement | 29/04/1983 | |
| CZECHOSLOVAKIA | Withdrawal Res. | 23/10/1990 | |
| DENMARK | Signature | 17/06/1925 | |
| DENMARK | Ratification | 05/05/1930 | |
| DOMINICAN REPUBLIC | Accession | 04/12/1970 | 08/12/1970 |
| ECUADOR | Accession | 10/09/1970 | 16/09/1970 |
| EGYPT | Signature | 17/06/1925 | |
| EGYPT | Ratification | 06/12/1928 | |
| EQUATORIAL GUINEA | Accession | 16/05/1989 | 20/05/1989 |
| ESTONIA | Signature | 17/06/1925 | |
| ESTONIA | Ratification | 28/08/1931 | |
| ESTONIA | Reservation | 28/08/1931 | |
| FIJI | Succession | 21/03/1973 | |
| FIJI | Reservation | 21/03/1973 | |
| FINLAND | Signature | 17/06/1925 | |
| FINLAND | Ratification | 26/06/1929 | |
| FRANCE | Declaration | 01/01/1905 | |
| FRANCE | Signature | 17/06/1925 | |
| FRANCE | Ratification | 10/05/1926 | |
| FRANCE | Reservation | 10/05/1926 | |
| GAMBIA THE | Succession | 11/10/1966 | |
| GERMAN DEMOCRATIC REPUBLIC | Non-acceptance | 01/01/1905 | |
| GERMAN DEMOCRATIC REPUBLIC | Accession | 02/03/1959 | |
| GERMAN DEMOCRATIC REPUBLIC | Re-Application | 23/09/1974 | 02/03/1959 |
| GERMAN DEMOCRATIC REPUBLIC | Confirmation | 21/10/1974 | |
| GERMANY | Signature | 17/06/1925 | |
| GERMANY | Ratification | 25/04/1929 | |
| GERMANY FEDERAL REPUBLIC | Declaration | 27/11/1975 | |
| GHANA | Accession | | 03/05/1967 |
| GHANA | Statement | 24/10/1983 | |
| GREECE | Signature | 17/06/1925 | |
| GREECE | Ratification | 30/05/1931 | |
| GRENADA | Succession | 11/01/1989 | 20/05/1989 |
| GUATEMALA | Accession | 03/05/1983 | |
| GUINEA BISSAU | Accession | 07/01/1989 | 20/05/1989 |
| HUNGARY | Accession | 11/10/1952 | |
| HUNGARY | Statement | 05/05/1983 | |
| ICELAND | Accession | 19/12/1966 | 02/11/1967 |
| India | Signature | 17/06/1925 | |
| India | Ratification | 09/04/1930 | |
| India | Reservation | 09/04/1930 | |
| Indies | Extension | 31/10/1930 | |
| INDONESIA | Succession | 21/01/1971 | |
| IRAQ | Accession | 08/09/1931 | 08/09/1931 |
| IRAQ | Reservation | 08/09/1931 | |
| Irish Free State | Extension | 29/08/1930 | 29/08/1930 |
| Irish Free State | Reservation | 29/08/1930 | |
| Irish Free State | Withdrawal Res. | 10/02/1972 | |
| ISRAEL | Accession | 20/02/1969 | 20/02/1969 |
| ISRAEL | Reservation | 20/02/1969 | |
| ISRAEL | Objection | 25/01/1972 | |
| ITALY | Signature | 17/06/1925 | |
| ITALY | Ratification | 03/04/1928 | |
| IVORY COAST | Accession | 27/07/1970 | |
| JAMAICA | Succession | 28/07/1970 | 09/04/1930 |
| JAPAN | Signature | 17/06/1925 | |
| JAPAN | Ratification | 21/05/1970 | |
| JORDAN | Accession | 20/01/1977 | 17/03/1977 |
| JORDAN | Reservation | 20/01/1977 | 17/03/1977 |
| KAMPUCHEA | Reservation | 21/03/1983 | 15/03/1983 |
| KAMPUCHEA | Accession | 21/03/1983 | 15/03/1983 |
| KENYA | Accession | 17/06/1970 | 06/07/1970 |
| KOREA DEMOCRATIC PEOPLE'S REPUBLIC OF | Accession | 22/12/1988 | 04/01/1989 |
| KOREA DEMOCRATIC PEOPLE'S REPUBLIC OF | Declaration | 22/12/1988 | 04/01/1989 |
| KOREA REPUBLIC OF | Accession | 29/12/1988 | 04/01/1989 |
| KOREA REPUBLIC OF | Reservation | 29/12/1988 | |
| KUWAIT | Accession | 15/12/1971 | |
| KUWAIT | Reservation | 15/12/1971 | |
| LAOS | Accession | 16/01/1989 | 20/05/1989 |
| LATVIA | Signature | 17/06/1925 | |
| LATVIA | Ratification | 03/06/1931 | |
| LEBANON | Accession | 17/04/1969 | |
| LESOTHO | Succession | 10/03/1972 | 09/04/1930 |
| LIBERIA | Accession | 02/04/1927 | |
| LIBYA | Accession | 29/12/1971 | |
| LIBYA | Reservation | 29/12/1971 | |
| LITHUANIA | Signature | 17/06/1925 | |
| LITHUANIA | Ratification | 15/06/1933 | |
| LUXEMBOURG | Signature | 17/06/1925 | |
| LUXEMBOURG | Ratification | 01/09/1936 | |
| MACEDONIA THE FYR OF | Accession | 20/08/2015 | 20/08/2015 |
| MALAGASY REPUBLIC | Accession | 21/06/1967 | 02/08/1967 |
| MALAWI | Accession | | 14/09/1970 |
| MALAYSIA | Accession | 07/12/1970 | 10/12/1970 |
| MALDIVES | Succession | 27/12/1966 | 06/01/1967 |
| MALTA | Succession | 09/10/1970 | 21/09/1964 |
| MAURITIUS | Succession | 23/12/1970 | 12/03/1968 |
| MAURITIUS | Statement | 27/06/1983 | |
| MEXICO | Accession | 28/05/1932 | |
| MOLDOVA REPUBLIC OF | Accession | 31/01/2011 | 31/01/2011 |
| MONACO | Accession | 15/12/1966 | 06/01/1967 |
| MONGOLIA | Accession | 06/12/1968 | |
| MONGOLIA | Reservation | 06/12/1968 | |
| MONGOLIA | Statement | 14/09/1983 | |
| MONGOLIA | Withdrawal Res. | 15/05/1990 | |
| MOROCCO | Accession | 07/10/1970 | 13/10/1970 |
| NEPAL | Accession | 09/05/1969 | |
| NETHERLANDS THE | Signature | 17/06/1925 | |
| NETHERLANDS THE | Ratification | 31/10/1930 | |
| NETHERLANDS THE | Reservation | 31/10/1970 | |
| NETHERLANDS THE | Statement | 26/04/1983 | |
| NEW ZEALAND | Accession | 23/01/1930 | |
| NEW ZEALAND | Reservation | 23/01/1930 | |
| NEW ZEALAND | Withdrawal Res. | 06/01/1989 | |
| NICARAGUA | Signature | 17/06/1925 | |
| NICARAGUA | Ratification | 05/10/1990 | |
| NIGER | Succession | 19/04/1967 | |
| NIGER | Statement | 15/09/1983 | |
| NIGERIA | Accession | 15/10/1968 | |
| NIGERIA | Reservation | 15/10/1968 | |
| NORWAY | Signature | 17/06/1925 | |
| NORWAY | Ratification | 27/07/1932 | |
| PAKISTAN | Succession | 13/04/1960 | 01/01/1947 |
| PAKISTAN | Reservation | 15/04/1960 | |
| PANAMA | Accession | 26/11/1970 | 04/12/1970 |
| PAPUA NEW GUINEA | Succession | 02/09/1980 | 16/09/1975 |
| PAPUA NEW GUINEA | Reservation | 02/09/1980 | |
| PARAGUAY | Accession | 22/10/1933 | 22/10/1933 |
| PERSIA | Accession | 04/07/1929 | 05/08/1929 |
| PERU | Accession | 05/06/1985 | 13/08/1985 |
| PHILIPPINES | Accession | 29/05/1973 | 08/06/1973 |
| POLAND | Signature | 17/06/1925 | |
| POLAND | Ratification | 04/02/1929 | |
| POLAND | Declaration | 20/07/1983 | |
| PORTUGAL | Signature | 17/06/1925 | |
| PORTUGAL | Ratification | 01/07/1930 | |
| PORTUGAL | Reservation | 01/07/1930 | |
| QATAR | Accession | 16/09/1976 | 18/10/1976 |
| ROUMANIA | Signature | 17/06/1925 | |
| ROUMANIA | Ratification | 23/08/1929 | |
| ROUMANIA | Reservation | 23/08/1929 | |
| ROUMANIA | Statement | 24/06/1983 | |
| RWANDA | Succession | 11/05/1964 | 25/06/1964 |
| SALVADOR | Signature | 17/06/1925 | |
| SAUDI ARABIA | Accession | 25/01/1971 | 27/01/1971 |
| SENEGAL | Accession | 15/06/1977 | 20/07/1977 |
| SERB-CROAT-SLOVENE STATE | Signature | 17/06/1925 | |
| SERB-CROAT-SLOVENE STATE | Ratification | 12/04/1929 | |
| SERB-CROAT-SLOVENE STATE | Reservation | 12/04/1929 | |
| SIAM | Signature | 17/06/1925 | |
| SIAM | Ratification | 06/06/1931 | |
| SIERRA LEONE | Accession | 20/02/1967 | |
| SOLOMON ISLANDS | Succession | 01/06/1981 | 07/07/1978 |
| SOLOMON ISLANDS | Reservation | 01/06/1981 | |
| SOUTH AFRICA | Accession | 23/01/1930 | |
| SOUTH AFRICA | Reservation | 23/01/1930 | |
| SOVIET UNION | Objection | 01/01/1905 | |
| SOVIET UNION | Accession | 05/04/1928 | 05/04/1928 |
| SOVIET UNION | Reservation | 05/04/1928 | |
| SOVIET UNION | Statement | 17/05/1983 | |
| SOVIET UNION | Withdrawal Res. | 08/02/2001 | |
| SPAIN | Signature | 17/06/1925 | |
| SPAIN | Ratification | 22/08/1929 | |
| SPAIN | Reservation | 22/08/1929 | |
| SPAIN | Withdrawal Res. | 25/11/1992 | |
| ST CHRISTOPHER AND NEVIS | Succession | 26/10/1989 | 15/11/1985 |
| St Lucia | Succession | 05/12/1988 | 21/12/1988 |
| SUDAN | Accession | 10/12/1980 | 17/12/1980 |
| Surinam | Extension | 31/10/1930 | |
| SWEDEN | Signature | 17/06/1925 | |
| SWEDEN | Ratification | 25/04/1930 | |
| SWITZERLAND | Signature | 17/06/1925 | |
| SWITZERLAND | Ratification | 12/07/1932 | |
| SYRIA | Accession | 17/12/1968 | |
| SYRIA | Reservation | 17/12/1968 | |
| TAIWAN | Accession | 24/08/1929 | 24/08/1929 |
| TANGANYIKA | Succession | 26/03/1963 | 22/04/1963 |
| TOGO | Accession | 18/11/1970 | 05/04/1971 |
| TONGA | Succession | 19/07/1971 | |
| TRINIDAD AND TOBAGO | Succession | 24/11/1970 | 31/08/1962 |
| TUNISIA | Accession | 20/06/1967 | 12/07/1967 |
| TURKEY | Signature | 17/06/1925 | |
| TURKEY | Ratification | 05/10/1929 | |
| UGANDA | Succession | 14/04/1965 | |
| UNITED KINGDOM | Signature | 17/06/1925 | |
| UNITED KINGDOM | Ratification | 09/04/1930 | |
| UNITED KINGDOM | Withdrawal Res. | 20/12/2002 | |
| UNITED STATES OF AMERICA | Signature | 17/06/1925 | |
| UNITED STATES OF AMERICA | Ratification | 10/04/1975 | |
| UNITED STATES OF AMERICA | Reservation | 10/04/1975 | |
| UPPER VOLTA | Accession | 01/03/1971 | 03/03/1971 |
| URUGUAY | Signature | 17/06/1925 | |
| URUGUAY | Ratification | 12/04/1977 | |
| VATICAN CITY | Accession | | 21/10/1966 |
| VENEZUELA | Signature | 17/06/1925 | |
| VENEZUELA | Ratification | 08/02/1928 | |
| VIETNAM | Accession | 15/12/1980 | 28/10/1980 |
| VIETNAM | Reservation | 15/12/1980 | |
| VIETNAM | Statement | 18/08/1983 | |
| YEMEN ARAB REPUBLIC | Accession | 11/03/1971 | 17/03/1971 |
| YEMEN ARAB REPUBLIC | Declaration | 16/09/1973 | |
| YEMEN, PEOPLES'S DEMOCRATIC REPUBLIC OF | Accession | 20/10/1986 | 09/12/1986 |
| YEMEN, PEOPLES'S DEMOCRATIC REPUBLIC OF | Declaration | 20/10/1986 | |