| Country | Action | Action Date | Effective Date |
|---|---|---|---|
| ALGERIA | Adherence | 01/10/1985 | |
| ARGENTINA | Adherence | 23/09/1954 | |
| AUSTRALIA | Signature | 30/04/1952 | |
| AUSTRALIA | Ratification | 27/08/1952 | |
| AUSTRIA | Signature | 06/12/1951 | |
| AUSTRIA | Ratification | 22/10/1952 | |
| BAHRAIN | Adherence | 29/03/1971 | |
| BANGLADESH | Adherence | 01/01/1978 | |
| BARBADOS | Adherence | 06/12/1976 | |
| BELGIUM | Signature | 06/12/1951 | |
| BELGIUM | Ratification | 22/07/1952 | |
| BELIZE | Adherence | 14/05/1987 | 14/05/1987 |
| BOLIVIA | Adherence | 27/10/1960 | |
| BRAZIL | Signature | 06/12/1951 | |
| BRAZIL | Ratification | 14/09/1961 | |
| CAMBODIA | Adherence | 10/06/1952 | |
| CANADA | Signature | 06/12/1951 | |
| CANADA | Ratification | 10/07/1953 | |
| CAPE VERDE | Adherence | 19/03/1980 | |
| CEYLON | Signature | 06/12/1951 | |
| CEYLON | Ratification | 12/02/1952 | |
| CHILE | Signature | 03/04/1952 | |
| CHILE | Ratification | 03/04/1952 | |
| COLOMBIA | Signature | 29/04/1952 | |
| COLOMBIA | Ratification | 26/01/1970 | |
| Cook Islands | Extension | 16/09/1952 | |
| COSTA RICA | Signature | 28/04/1952 | |
| COSTA RICA | Ratification | 23/07/1973 | |
| CUBA | Signature | 06/12/1951 | |
| CUBA | Ratification | 14/04/1976 | |
| CUBA | Declaration | 14/04/1976 | |
| CUBA | Reservation | 14/04/1976 | |
| CZECHOSLOVAKIA | Adherence | 05/08/1983 | |
| CZECHOSLOVAKIA | Declaration | 05/08/1983 | |
| DENMARK | Signature | 06/12/1951 | |
| DENMARK | Ratification | 13/02/1953 | |
| DOMINICAN REPUBLIC | Adherence | 20/06/1952 | |
| ECUADOR | Signature | 12/03/1952 | |
| ECUADOR | Ratification | 09/05/1956 | |
| EGYPT | Signature | 06/12/1951 | |
| EGYPT | Ratification | 22/07/1953 | |
| EGYPT | Declaration | 09/01/1980 | |
| EL SALVADOR | Signature | 06/12/1951 | |
| EL SALVADOR | Ratification | 12/02/1953 | |
| ETHIOPIA | Adherence | 20/06/1977 | |
| FINLAND | Adherence | 22/06/1960 | |
| FRANCE | Signature | 06/12/1951 | |
| FRANCE | Ratification | 20/08/1957 | |
| GERMAN DEMOCRATIC REPUBLIC | Adherence | 04/12/1974 | 04/12/1974 |
| GERMAN DEMOCRATIC REPUBLIC | Declaration | 04/12/1974 | |
| GERMANY FEDERAL REPUBLIC | Signature | 30/04/1952 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 03/05/1957 | |
| GREECE | Adherence | 09/12/1954 | |
| GRENADA | Adherence | 27/11/1985 | 27/11/1985 |
| GUATEMALA | Signature | 23/04/1952 | |
| GUATEMALA | Ratification | 25/05/1955 | |
| Guernsey, Bailiwick of | Extension | 09/03/1966 | |
| GUYANA | Adherence | 31/08/1970 | |
| HAITI | Adherence | 06/11/1970 | |
| HUNGARY | Adherence | 17/05/1960 | |
| INDIA | Signature | 30/04/1952 | |
| INDIA | Ratification | 09/06/1952 | |
| INDONESIA | Signature | 06/12/1951 | |
| INDONESIA | Ratification | 21/06/1977 | |
| IRAN | Adherence | 18/09/1972 | |
| IRAQ | Adherence | 01/07/1954 | |
| IRELAND, REPUBLIC OF | Signature | 06/12/1951 | |
| IRELAND, REPUBLIC OF | Ratification | 31/03/1955 | |
| Isle of Man | Extension | 01/10/1953 | |
| ISRAEL | Signature | 06/12/1951 | |
| ISRAEL | Ratification | 03/09/1956 | |
| ITALY | Signature | 06/12/1951 | |
| ITALY | Ratification | 03/08/1955 | |
| JAMAICA | Adherence | 24/11/1969 | |
| JAPAN | Signature | 06/12/1951 | |
| JAPAN | Ratification | 11/08/1952 | |
| Jersey | Extension | 01/10/1953 | |
| JORDAN | Adherence | 24/04/1970 | |
| KENYA | Adherence | 07/05/1974 | |
| KOREA REPUBLIC OF | Adherence | 08/12/1953 | |
| Land Berlin | Extension | 03/05/1957 | |
| LAOS | Adherence | 28/02/1955 | |
| LEBANON | Adherence | 18/09/1970 | |
| LIBERIA | Adherence | 02/07/1986 | 02/07/1986 |
| LIBYA | Adherence | 09/07/1970 | |
| LUXEMBOURG | Signature | 16/01/1952 | |
| LUXEMBOURG | Ratification | 13/01/1955 | |
| MALAWI | Adherence | 21/05/1974 | 21/05/1974 |
| MALI | Adherence | 31/08/1987 | 31/08/1987 |
| MALTA | Adherence | 13/05/1975 | 13/05/1975 |
| MAURITIUS | Adherence | 11/06/1971 | |
| MEXICO | Adherence | 26/05/1976 | 26/05/1976 |
| MOROCCO | Adherence | 12/10/1972 | |
| Nauru | Extension | 09/09/1952 | |
| NETHERLANDS THE | Signature | 06/12/1951 | |
| NETHERLANDS THE | Ratification | 29/10/1954 | |
| NEW ZEALAND | Signature | 06/12/1951 | |
| NEW ZEALAND | Ratification | 16/09/1952 | |
| NEW ZEALAND | Declaration | 16/09/1952 | |
| NICARAGUA | Adherence | 02/08/1956 | |
| NIGER | Adherence | 04/06/1985 | |
| Niue Island | Extension | 16/09/1952 | |
| Norfolk Island | Extension | 09/09/1952 | |
| NORWAY | Adherence | 23/04/1956 | |
| OMAN | Adherence | 23/01/1989 | 23/01/1989 |
| PAKISTAN | Adherence | 10/11/1954 | |
| PANAMA | Adherence | 14/02/1968 | |
| Papua New Guinea | Extension | 09/09/1954 | |
| PAPUA NEW GUINEA | Adherence | 01/06/1976 | |
| PARAGUAY | Adherence | 05/04/1968 | |
| PERU | Adherence | 01/07/1975 | |
| PHILIPPINES | Signature | 06/12/1951 | |
| PHILIPPINES | Ratification | 03/12/1953 | |
| PORTUGAL | Signature | 06/12/1951 | |
| PORTUGAL | Ratification | 20/10/1955 | |
| ROMANIA | Adherence | 17/11/1971 | |
| ROMANIA | Statement | 17/11/1971 | |
| SENEGAL | Adherence | 03/03/1975 | |
| SIERRA LEONE | Adherence | 23/06/1981 | 23/06/1981 |
| SOLOMON ISLANDS | Adherence | 18/10/1978 | |
| SOUTH AFRICA | Signature | 06/12/1951 | |
| SOUTH AFRICA | Ratification | 21/09/1956 | |
| SOVIET UNION | Adherence | 24/04/1956 | |
| SPAIN | Signature | 10/12/1951 | |
| SPAIN | Ratification | 18/02/1952 | |
| SUDAN | Adherence | 16/07/1971 | |
| SURINAME | Succession | 22/04/1977 | |
| SWEDEN | Signature | 06/12/1951 | |
| SWEDEN | Ratification | 30/05/1952 | |
| SWITZERLAND | Signature | 06/12/1951 | |
| THAILAND | Signature | 06/12/1951 | |
| THAILAND | Ratification | 16/08/1978 | |
| TOGO | Adherence | 02/04/1986 | 02/04/1986 |
| TRINIDAD AND TOBAGO | Adherence | 30/06/1970 | |
| TUNISIA | Adherence | 22/07/1971 | |
| TURKEY | Adherence | 29/07/1988 | 29/07/1988 |
| UNITED KINGDOM | Signature | 06/12/1951 | |
| UNITED KINGDOM | Ratification | 07/09/1953 | |
| UNITED KINGDOM | Declaration | 09/03/1996 | |
| UNITED STATES OF AMERICA | Signature | 06/12/1951 | |
| UNITED STATES OF AMERICA | Ratification | 18/08/1972 | |
| UNITED STATES OF AMERICA | Declaration | 18/08/1972 | 17/09/1972 |
| URUGUAY | Signature | 30/04/1952 | |
| URUGUAY | Ratification | 15/07/1970 | |
| VENEZUELA | Adherence | 12/05/1966 | |
| Western Samoa | Extension | 16/09/1952 | |
| YUGOSLAVIA | Signature | 06/12/1951 | |
| YUGOSLAVIA | Ratification | 11/02/1955 | |
| ZAMBIA | Adherence | 24/06/1986 | 24/06/1986 |