| (Source: ILOLEX - 29. 11. 2009) |
| Country | Ratification date | Status |
| Belgium | 08:05:1963 | ratified |
| Bosnia and Herzegovina | 02:06:1993 | ratified |
| Costa Rica | 29:12:1964 | ratified |
| Cyprus | 20:12:1966 | ratified |
| Ecuador | 05:04:1978 | ratified |
| France | 08:06:1967 | ratified |
| Germany | 01:07:1964 | ratified |
| Guatemala | 02:08:1961 | ratified |
| Guinea | 07:11:1960 | ratified |
| Italy | 10:04:1962 | ratified |
| Liberia | 16:05:1960 | ratified |
| The former Yugoslav Republic of Macedonia | 17:11:1991 | ratified |
| Mauritania | 08:11:1963 | ratified |
| Montenegro | 03:06:2006 | ratified |
| Netherlands | 08:08:1980 | ratified |
| Panama | 19:06:1970 | ratified |
| Peru | 04:04:1962 | ratified |
| Serbia | 24:11:2000 | ratified |
| Slovenia | 29:05:1992 | ratified |
| Spain | 07:08:1961 | ratified |
| Tunisia | 14:01:1963 | ratified |
| United Kingdom | 20:12:1974 | ratified |
| Uruguay | 28:06:1973 | ratified |
| Ratified: 23 | Conditional ratification: 0 | Declared applicable: 0 | Denounced: 0 |
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