31.3231(c)-1—Who are employee representatives.
(1)
Any officer or official representative of a railway labor organization which is not included as an employer under section 3231(a) who—
(ii)
Is duly authorized and designated to represent employees in accordance with the Railway Labor Act.
Code of Federal Regulations
(2)
Any individual who is regularly assigned to or regularly employed by an employee representative, as defined in paragraph (a)(1) of this section, in connection with the duties of such employee representative's office.
(b)
In determining whether an individual is an employee representative, his citizenship or residence is material only insofar as those factors may affect the determination of whether he was “in the service of an employer” (see paragraph (a) of § 31.3231(b)-1 ).