Union co-op model
A unionized co-operative is a co-operative which is beholden to active legal involvement by trade unions in the representation of the worker-owners' interests. While they may be considered unnecessary in most cases, trade union involvement and membership may be welcomed by some co-operatives, be it to show voluntary solidarity with the organized labor movement's own history of struggle or to allow workers to negotiate collectively for the furtherance of workers' special interests within the more democratic and representative co-operative.