| Country | Action | Action Date | Effective Date |
|---|
| ARGENTINA | Signature | 08/06/1925 | |
| ARGENTINA | Ratification | 17/02/1955 | |
| ARGENTINA | Denunciation | 11/03/1981 | 11/03/1982 |
| BOLIVIA | Accession | 15/11/1973 | |
| BULGARIA | Signature | 08/06/1925 | |
| BULGARIA | Ratification | 05/09/1929 | |
| CHILE | Signature | 08/06/1925 | |
| CHILE | Ratification | 31/05/1933 | |
| COLOMBIA | Signature | 08/06/1933 | |
| COLOMBIA | Ratification | 20/06/1933 | |
| CUBA | Signature | 08/06/1925 | |
| CUBA | Ratification | 06/08/1928 | |
| ESTONIA | Signature | 08/06/1925 | |
| ESTONIA | Ratification | 23/12/1929 | |
| FINLAND | Signature | 08/06/1925 | |
| FINLAND | Ratification | 26/05/1928 | |
| FINLAND | Withdrawal | 31/03/1983 | 31/03/1984 |
| IRELAND, REPUBLIC OF | Signature | 08/06/1925 | |
| IRELAND, REPUBLIC OF | Ratification | 15/03/1937 | |
| IRELAND, REPUBLIC OF | Denunciation | 22/12/1980 | 22/12/1981 |
| ISRAEL | Accession | 26/07/1951 | |
| LUXEMBOURG | Signature | 08/06/1925 | |
| LUXEMBOURG | Ratification | 16/04/1928 | |
| LUXEMBOURG | Denunciation | 02/06/1998 | 02/06/1999 |
| NICARAGUA | Signature | 08/06/1925 | |
| NICARAGUA | Ratification | 12/04/1934 | |
| NICARAGUA | Withdrawal | 19/09/1950 | |
| PANAMA | Accession | 19/06/1970 | |
| PERU | Signature | 08/06/1925 | |
| PERU | Ratification | 04/04/1962 | |
| SPAIN | Signature | 08/06/1925 | |
| SPAIN | Ratification | 29/08/1932 | |
| SWEDEN | Accession | 05/01/1940 | |
| SWEDEN | Withdrawal | 12/06/1970 | |
| UNITED KINGDOM | | | |
| URUGUAY | Signature | 08/06/1925 | |
| URUGUAY | Ratification | 06/06/1933 | |
| URUGUAY | Withdrawal | 26/05/1978 | 26/05/1979 |