The Danish General Workers' Union (Danish: Specialarbejderforbundet i Danmark, SID) was a general union representing mostly unskilled and semi-skilled workers, in Denmark.
This sometimes led to conflict, as it argued that the lowest-paid workers should receive the highest wage increases, to reduce pay differentials.
From its formation until 1990, the SID was the largest union in Denmark, but it was then surpassed by the Danish Union of Commercial and Clerical Employees.
By 1997, it had 319,680 members, of whom about 37% worked in production, 31% in construction, 24% in transport, and the remainder in various other sectors.
[1][4] At the end of 2004, the union merged with the Danish Women Workers' Union, to form the United Federation of Danish Workers.