The General Confederation of Liberal Trade Unions of Belgium (ACLVB or CGSLB) is the smallest of Belgium's three major trade union federations. Unlike the other socialist and catholic federations, the ideology of the ACLVB-CGSLB is explicitly liberal. The federation traces its origins to 1891 and its membership numbered 295,600 in 2016. Most trade unionists belong directly to the federation, but it has one affiliate, the Free Syndicate of the Public Services. This represents all public sector workers. Presidents 1920–1942: Paul Lamborelle 1944–1959: Adolphe Van Glabbeke 1959–1989: Armand Colle 1989–1994: Willy Waldack 1994–2006: Guy Haaze 2006–2015: Jan Vercamst 2015–present: Mario Coppens References Bibliography External links Official site Trade unions in Belgium Trade Union Advisory Committee to the OECD European Trade Union Confederation