From Master Agreement: Article 6.03
The Employing Department will provide specific bulletin board space for use of the Union at locations on the Employer's premises which are accessible to Employees. Sites of the bulletin boards are to be determined by the Employing Department and the Union. Bulletin board space shall be used for the posting of Union information directed to its members. The text of such information shall be submitted to the Employing Department for approval prior to posting and a decision shall be provided within twenty-four (24) hours.