employee representative
(f) The term “employee representative” means any officer or official representative of a railway labor organization other than a labor organization included in the term employer as defined in subsection (a) who before or after August 29, 1935 , was in the service of an employer as defined in said subsection and who is duly authorized and designated to represent employees in accordance with the Railway Labor Act [ 45 U.S.C. 151 et seq.], and any individual who is regularly assigned to or regularly employed by such officer or official representative in connection with the duties of his office.