| Country | Action | Action Date | Effective Date |
|---|
| AUSTRIA | Accession | 09/10/1956 | 09/10/1956 |
| BELGIUM | Signature | 11/12/1953 | |
| BELGIUM | Ratification | 14/06/1955 | 14/06/1955 |
| BOSNIA AND HERZEGOVINA | Accession | 29/12/1994 | 29/12/1994 |
| Cook Islands | Extension | 20/07/1978 | |
| CROATIA | Accession | 27/01/1993 | 27/01/1993 |
| CYPRUS | Signature | 30/11/1967 | |
| CYPRUS | Ratification | 29/10/1968 | 29/10/1968 |
| CZECH REPUBLIC | Succession | 01/01/1993 | 01/01/1993 |
| CZECHOSLOVAKIA | Signature | 26/03/1991 | |
| CZECHOSLOVAKIA | Approval | 26/03/1991 | 26/03/1991 |
| DENMARK | Signature | 11/12/1953 | |
| DENMARK | Ratification | 20/04/1954 | 20/04/1954 |
| FINLAND | Signature | 16/09/1991 | |
| FINLAND | Ratification | 16/09/1991 | 16/09/1991 |
| FRANCE | Signature | 11/12/1953 | |
| FRANCE | Ratification | 11/03/1955 | 11/03/1955 |
| GERMANY FEDERAL REPUBLIC | Signature | 11/12/1953 | |
| GERMANY FEDERAL REPUBLIC | Reservation | 11/12/1953 | |
| GERMANY FEDERAL REPUBLIC | Ratification | 03/03/1955 | 03/03/1955 |
| GERMANY FEDERAL REPUBLIC | Declaration | 03/03/1955 | |
| GERMANY FEDERAL REPUBLIC | Reservation | 03/03/1955 | |
| GREECE | Signature | 11/12/1953 | |
| GREECE | Ratification | 05/12/1955 | 05/12/1955 |
| HUNGARY | Signature | 03/02/1992 | |
| ICELAND | Signature | 11/12/1953 | |
| ICELAND | Ratification | 05/08/1954 | 05/08/1954 |
| IRELAND, REPUBLIC OF | Signature | 11/12/1953 | |
| IRELAND, REPUBLIC OF | Ratification | 31/03/1954 | |
| Isle of Man | Extension | 02/09/1994 | |
| ISRAEL | Accession | 07/10/1971 | 07/10/1971 |
| ITALY | Signature | 11/12/1953 | |
| ITALY | Ratification | 31/10/1956 | 31/10/1956 |
| ITALY | Reservation | 31/10/1956 | |
| LATVIA | Signature | 05/12/1996 | |
| LATVIA | Ratification | 05/12/1996 | 05/12/1996 |
| LIECHTENSTEIN | Signature | 22/05/1991 | |
| LIECHTENSTEIN | Ratification | 22/05/1991 | 22/05/1991 |
| LITHUANIA | Signature | 07/06/1996 | |
| LITHUANIA | Ratification | 07/02/1997 | 07/02/1997 |
| LUXEMBOURG | Signature | 11/12/1953 | |
| LUXEMBOURG | Ratification | 12/01/1955 | 12/01/1955 |
| MACEDONIA THE FYR OF | Accession | 30/03/1994 | 30/03/1994 |
| MALTA | Signature | 07/05/1968 | |
| MALTA | Ratification | 06/05/1969 | 06/05/1969 |
| MOLDOVA REPUBLIC OF | Signature | 02/05/1996 | |
| NETHERLANDS THE | Signature | 11/12/1953 | |
| NETHERLANDS THE | Ratification | 27/08/1956 | |
| NEW ZEALAND | Accession | 20/07/1978 | 20/07/1978 |
| Niue Island | Extension | 20/07/1978 | |
| NORWAY | Signature | 11/12/1953 | |
| NORWAY | Ratification | 21/05/1954 | 21/05/1954 |
| POLAND | Signature | 11/07/1994 | |
| POLAND | Ratification | 10/10/1994 | |
| PORTUGAL | Signature | 27/04/1978 | |
| PORTUGAL | Ratification | 03/11/1981 | 03/11/1981 |
| ROMANIA | Signature | 02/10/1995 | |
| ROMANIA | Ratification | 22/04/1998 | 22/04/1998 |
| RUSSIAN FEDERATION | Signature | 07/11/1996 | |
| RUSSIAN FEDERATION | Ratification | 17/09/1999 | 17/09/1999 |
| SAAR TERRITORY | Signature | 11/12/1953 | |
| SAAR TERRITORY | Ratification | 08/09/1954 | |
| SAN MARINO | Signature | 11/05/1990 | |
| SAN MARINO | Ratification | 20/11/1996 | |
| SLOVAK REPUBLIC | Succession | 08/01/1993 | 01/01/1993 |
| SLOVENIA | Accession | 02/07/1992 | 02/07/1992 |
| SPAIN | Accession | 21/03/1962 | 21/03/1962 |
| SWEDEN | Signature | 11/12/1953 | |
| SWEDEN | Ratification | 27/05/1960 | 27/05/1960 |
| SWITZERLAND | Signature | 25/04/1991 | |
| SWITZERLAND | Declaration | 25/04/1991 | |
| SWITZERLAND | Ratification | 25/04/1991 | |
| Tokelau Islands | Extension | 20/07/1978 | |
| TURKEY | Signature | 11/12/1953 | |
| TURKEY | Ratification | 10/10/1957 | 10/10/1957 |
| UNITED KINGDOM | Signature | 11/12/1953 | |
| UNITED KINGDOM | Ratification | 22/03/1954 | 01/01/1900 |
| YUGOSLAVIA | Accession | 15/09/1977 | 15/09/1977 |