The Free German Trade Union Federation (FDGB; German: Freier Deutscher Gewerkschaftsbund) was the sole national trade union centre of the German Democratic Republic (GDR or East Germany) from 1946 to 1990. It was a mass organisation and a constituent member of the National Front. The FDGB was a federation of trade unions that nominally represented all workers in East Germany, but in practice was an agency of the ruling Socialist Unity Party of Germany (SED) to enforce ideological conformity in the workplace. The FDGB was dissolved by the De Maizière government shortly before German reunification.