The diffusion is analyzed of determinate information on the part of a union, in particular, about the opening of a disciplinary report, about the nomination of a police inspector and about the realization of some listenings for a worker of the Town Council. Different requests of access to data of the workers on the part of the union are also analyzed, in particular, the access to information about formation and economic helps, about the identity of a civil servant who issues a report, about the Documents TC1 and TC2, and about the staff of staff, with detailed indication of the contributions to the Social Security for each worker.