[Code of Federal Regulations] [Title 29, Volume 4] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 29CFR1204.1] [Page 15] TITLE 29--LABOR CHAPTER X--NATIONAL MEDIATION BOARD PART 1204_LABOR CONTRACTS--Table of Contents Sec. 1204.1 Making and maintaining contracts. Sec. 1204.1 Making and maintaining contracts. 1204.2 Arbitrary changing of contracts. 1204.3 Filing of contracts. Authority: 44 Stat. 577, as amended; 45 U.S.C. 151-163. Source: 11 FR 177A-924, Sept. 11, 1946, unless otherwise noted. Redesignated at 13 FR 8740, Dec. 30, 1948. It is the duty of all carriers, their officers, agents, and employees to exert every reasonable effort to make and maintain contracts covering rates of pay, rules, and working conditions.