45 U.S.C. § 156 : US Code - Section 156: Procedure in changing rates of pay, rules, and working conditions

Search 45 U.S.C. § 156 : US Code - Section 156: Procedure in changing rates of pay, rules, and working conditions

Carriers and representatives of the employees shall give at least
thirty days' written notice of an intended change in agreements
affecting rates of pay, rules, or working conditions, and the time
and place for the beginning of conference between the
representatives of the parties interested in such intended changes
shall be agreed upon within ten days after the receipt of said
notice, and said time shall be within the thirty days provided in
the notice. In every case where such notice of intended change has
been given, or conferences are being held with reference thereto,
or the services of the Mediation Board have been requested by
either party, or said Board has proffered its services, rates of
pay, rules, or working conditions shall not be altered by the
carrier until the controversy has been finally acted upon, as
required by section 155 of this title, by the Mediation Board,
unless a period of ten days has elapsed after termination of
conferences without request for or proffer of the services of the
Mediation Board.