The labour unions play a major role in the Dutch economy because, first, they bargain with employers' organizations over wages and working conditions (these deals are binding for all employed people), and second, they advise the government on economic legislation through their membership of the Social and Economic Council (SER).[4]
Traditionally Dutch labour unions were part of the pillarized structure of society. Each social group had a pillar: the Protestants (CNV), the Catholics (NKV, merged into FNV), the social democrats (NVV, merged into FNV) and the syndicalists (NAS).