[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: 29CFR1204.2] [Page 15] TITLE 29--LABOR BOARD PART 1204_LABOR CONTRACTS--Table of Contents Sec. 1204.2 Arbitrary changing of contracts. No carrier, its officers, or agents shall change the rates of pay, rules, or working conditons of its employees, as a class as embodied in agreements except in the manner prescribed in such agreements or in section 6 of the Railway Labor Act.