[Code of Federal Regulations] [Title 29, Volume 4] [Revised as of July 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 29CFR1206.3] [Page 17] TITLE 29--LABOR BOARD PART 1206_HANDLING REPRESENTATION DISPUTES UNDER THE RAILWAY LABOR ACT --Table of Contents Sec. 1206.3 Age of authorization cards. Authorizations must be signed and dated in the employee's own handwriting or witnessed mark. No authorizations will be accepted by the National Mediation Board in any employee representation dispute which bear a date prior to one year before the date of the application for the investigation of such dispute.