The Central Organisation of Finnish Trade Unions, usually referred to by the acronym SAK (Finnish: Suomen Ammattiliittojen Keskusjärjestö, Swedish: Finlands Fackförbunds Centralorganisation, FFC) is the largest trade union confederation in Finland. Its member organisations have a total of more than one million members, which makes up about one fifth of the country's population.
The other two Finnish trade unions confederations are the Finnish Confederation of Salaried Employees (STTK) and the Confederation of Unions for Academic Professionals in Finland (AKAVA). The most important negotiating partner of SAK is the Elinkeinoelämän keskusliitto/Finlands Näringsliv (the Confederation of Finnish Industries, EK), which represents the majority of Finnish employers.
SAK has been challenged by Yleinen työttömyyskassa, an independent unemployment insurance institute, which charges lower fees than some of the trade unions, while not providing the other services of a Finnish trade union.
The current SAK was founded in 1969 as the Finnish Federation of Trade Unions (SAK 1930–1969), controlled by SKDL and TPSL, and the Finnish Trade Union Federation (SAJ 1960–1969), controlled by SDP, settled their disputes and merged. The SAK, however, considers itself the continuation of the first Finnish central organisation, the Finnish Trade Union Federation (SAJ 1907–1930).
Construction Trade UnionFinnish Aviation Union IAUFinnish Cabin Crew Union SLSYFinnish Electrical Workers' UnionFinnish Food Workers' Union SELFinnish Locomotivemen's UnionFinnish Musicians' UnionFinnish Post and Logistics UnionFinnish Railwaymen's UnionFinnish Seamen's Union SM-UFinnish Social Democratic Journalists' UnionFinnish Transport Workers' Union AKTGeneral Union of Journalists YLLIndustrial Union TEAMMetalworkers' UnionPaperworkers' UnionRailway Salaried Staff's UnionService Union United PAMTheatre and Media Employees in Finland TeMeTrade Union for the Public and Welfare Sectors JHLCoastguard UnionFinnish Customs Officers' UnionFinnish NCOs' UnionFinnish Prison Officers' UnionUnion of Foremen in CommerceWood and Allied Workers' UnionSuomen Autoalantyöntekijäin Liitto (1969–1970) merged into AKTAuto- ja Konealan Unioni AKU (?–2003) merged into Metalworkers' UnionAuto- ja Kuljetustyöväen Liitto (1969–1970) merged into AKTHotel and Restaurant Workers' Union (1969–2000) merged into PAMIlmakuljetusalan Ammattiliitto (1969) merged into IAUSuomen Ilmakuljetus Unioni (1969) merged into IAUNoble Metal Workers' Union (1969–1974) merged into Metalworkers' UnionJärjestötoimitsijain Liitto JTL (–1996)Finnish Miners' Union (1969) merged into Metalworkers' UnionChemical Workers' Union (1993−2009) merged into TEAMKemian Työntekijäin Liitto (1970–1993) merged into Chemical Workers' UnionKiinteistötyöntekijäin Liitto (1969–2000) merged into PAMRubber and Leather Workers' Union (1969–1993) merged into Chemical Workers' UnionKunnallis- ja sairaala-alojen työntekijäin liitto (1969–?)Municipal Workers' Union KTV (1969–2006) merged into JHLSuomen Laivanpäällystöliitto SLPL (1972–1989) resigned, moved to STTKFinnish Glass and Porcelain Workers' Union (1968–1994) merged into Chemical Workers' UnionLiikealan ammattiliitto (1987–2000) merged into PAMLiiketyöntekijäin Liitto (1969–1987) merged into Liikealan ammattiliittoFinnish Rural Workers' Union (1969–1993) merged into Wood and Allied Workers' UnionMielenterveys- ja kehitysvamma-alan liitto (1941–1981) merged into KTVFinnish Bricklayers' Union (1969–1971) merged into Construction Trade UnionPaperiteollisuuden työntekijäin liitto (1969–?)Finnish Police Union (1945–1984) resigned 1984Postiliitto (1945–2005) merged into PAUWood Workers' Union (1969–1993) merged into Wood and Allied Workers' UnionHarbour Workers' Union (1969–1970) merged into AKTFinnish Divers' Union (1969) merged into Construction Trade UnionTeknisten- ja Erikoisammattien Liitto Tekeri (1969–2000) merged into PAMSuomen Tekstiililaitosmiesten Liitto (1968–1989) merged into TevaTextile Workers' Union (1969–1970) merged into TevaTextile and Clothing Workers' Union Teva (?–2004) merged into Chemical Workers' UnionJournalist Union (1969–?)Finnish Workers' Union (1969–?)Valtion Virkailijain Liitto (1969–?)Valtion Yhteisjärjestö VTY (?–2006) merged into JHLFinnish Media Union (1969–2009) merged into TEAMVirkamiesten Yhteisjärjestö (1969–?)Scandals
SAK has received a lot attention for spending its members' money to mudslinging on behalf of Social Democratic Party. SAK's 2007 television advertisements were found so defaming that SAK had to withdraw the campaign. Even some SDP members expressed "disgust".
SAK has been convicted of sexual discrimination in high court. As of 2008, police is investigating financial fraud committed by SAK's Kiljava school.