Participant	Action	Date of Notification/Deposit	Date of Effect
Argentina	Signature	18/12/1969
Argentina	Ratification	13/10/1972	21/06/1985
Austria	Accession	22/08/1978	21/06/1985
Belarus	Accession	28/08/1997	27/09/1997
Bosnia and Herzegovina	Succession	01/09/1993	06/03/1992
Bulgaria	Accession	14/05/1987	13/06/1987
Chile	Accession	19/10/1979	21/06/1985
Colombia	Accession	29/10/2004	28/11/2004
Croatia	Succession	12/10/1992	08/10/1991
Cuba	Accession	09/06/1976	21/06/1985
Cyprus	Signature	18/09/1970
Cyprus	Ratification	24/01/1972	21/06/1985
Czech Republic	Succession	22/02/1993	01/01/1993
Czechoslovakia	Accession	01/10/1976	21/06/1985
Democratic People's Republic of Korea	Accession	22/05/1985	21/06/1985
El Salvador	Signature	18/12/1970
Estonia	Accession	21/10/1991	20/11/1991
Fiji	Accession	18/10/1972	21/06/1985
Finland	Signature	28/12/1970
Georgia	Accession	22/06/2005	22/07/2005
Guatemala	Accession	12/02/1988	13/03/1988
Indonesia	Accession	04/06/1982	21/06/1985
Iran (Islamic Republic of)	Accession	05/06/1975	21/06/1985
Israel	Signature	09/11/1970
Jamaica	Signature	18/12/1969
Liberia	Accession	16/09/2005	16/10/2005
Liechtenstein	Signature	15/12/1970
Liechtenstein	Ratification	03/08/1977	21/06/1985
Lithuania	Accession	05/08/2004	04/09/2004
Mexico	Accession	31/01/1979	21/06/1985
Montenegro	Succession	23/10/2006	03/06/2006
Nicaragua	Signature	18/09/1970
Paraguay	Accession	19/09/1975	21/06/1985
Philippines	Signature	16/12/1969
Philippines	Ratification	26/11/1976	21/06/1985
Poland	Accession	22/03/1977	21/06/1985
Rwanda	Accession	29/11/1977	21/06/1985
Seychelles	Accession	28/12/1977	21/06/1985
Slovakia	Succession	28/05/1993	01/01/1993
Slovenia	Succession	06/07/1992	25/06/1991
Spain	Accession	31/05/2001	30/06/2001
State of Palestine	Accession	22/03/2018	21/04/2018
Switzerland	Signature	31/07/1970
Switzerland	Ratification	03/11/1977	21/06/1985
The former Yugoslav Republic of Macedonia	Succession	29/12/2005	17/11/1991
Tonga	Accession	18/01/1977	21/06/1985
Tunisia	Signature	19/08/1970
Tunisia	Ratification	02/11/1971	21/06/1985
Ukraine	Accession	27/08/1993	26/09/1993
United Kingdom of Great Britain and Northern Ireland	Signature	17/12/1970
Uruguay	Accession	17/12/1980	21/06/1985
Yugoslavia (Federal Republic of)	Succession	12/03/2001	27/04/1992
Yugoslavia (Socialist Federal Republic of)	Signature	18/12/1969
Yugoslavia (Socialist Federal Republic of)	Ratification	05/03/1974	21/06/1985