The AFL–CIO constitution permits international unions to pay state federation and CLC dues directly, rather than have each local or state federation pay them. This relieves each union's state and local affiliates of the administrative duty of assessing, collecting and paying the dues. International unions assess the AFL–CIO dues themselves, and collect them on top of their own dues-generating mechanisms or simply pay them out of the dues the international collects. But not all international unions pay their required state federation and CLC dues.