| Country | Action | Action Date | Effective Date |
|---|
| BELGIUM | Approval | 16/06/1989 | 11/05/1990 |
| DENMARK | Approval | 16/09/1987 | 11/05/1990 |
| DENMARK | Reservation | 16/09/1987 | |
| FINLAND | Approval | 19/03/1986 | 11/05/1990 |
| FRANCE | Approval | 29/04/1987 | 11/05/1990 |
| GERMANY FEDERAL REPUBLIC | Approval | 24/10/1986 | 11/05/1990 |
| ICELAND | Approval | 30/05/1989 | 11/05/1990 |
| IRELAND, REPUBLIC OF | Approval | 27/06/1986 | 11/05/1990 |
| Land Berlin | Extension | 24/10/1986 | 11/05/1990 |
| NETHERLANDS THE | Approval | 05/06/1986 | 11/05/1990 |
| NORWAY | Approval | 24/03/1986 | 11/05/1990 |
| PORTUGAL | Ratification | 11/05/1990 | 11/05/1990 |
| SPAIN | Approval | 20/04/1989 | 11/05/1990 |
| SWEDEN | Approval | 26/03/1986 | 11/05/1990 |
| UNITED KINGDOM | Ratification | 12/03/1986 | |
| UNITED KINGDOM | Approval | 12/03/1986 | 11/05/1990 |