Article 923 Federal Labor Law

The strike notice brief shall not be processed when it is not formulated in accordance with the requirements of Article 920 or is presented by a union that is not the holder of the collective employment contract, or the administrator of the law-contract, or when it is intended to demand the signing of a collective contract, notwithstanding one already deposited before the Federal Center for Conciliation and Labor Registration, unless said contract has not been reviewed in the last four years. The Court, before initiating the processing of any strike notice, shall ascertain the foregoing and notify the filing party of the resolution in writing.