National Confederation of Trade Unions of Greenland

The National Confederation of Trade Unions of Greenland (Greenlandic: Sulinermik Inuussutissarsiuteqartut Kattuffiat or simply SIK) is a trade union centre in Greenland. It was formed in 1956 as 'GAS, Grønlands Arbejder Sammenslutning" until 1978 and has a membership more than 10,000, approximately 40 % of the Greenlandic workforce.

SIK is affiliated with the Council of Nordic Trade Unions.

Presidents

 * 1956: Lars Svendsen
 * 1961: Kaj Johnsen
 * 1963: Ôdâq Olsen
 * 1972: Ulf Olsen
 * 1973: Ôdâq Olsen
 * 1978: Abraham Mikaelsen
 * 1978: Ôdâq Olsen
 * 1980: Jens Lyberth
 * 1987: Finn Heilmann (May-October)
 * 1987: Jonas Fleischer (March)
 * 1987: Jens Johansen (March)
 * 1988: Ole Magnussen
 * 1989: Kristian "Pablo" Poulsen
 * 1990: Jess G. Berthelsen