An organization doing business on or after June 21, 1934, which establishes, in accordance with paragraph
(a)(1),
(2), or
(3) of this section a right, under
section 3 “First” (a) of the Railway Labor Act, as amended (48 Stat. 1189;
45 U.S.C. 153 “First” (a)), to participate in the selection of labor members of the National Railroad Adjustment Board, will be presumed, in the absence of clear and convincing evidence to the contrary, to be, from and after the date on which such right is thus established, a labor organization, national in scope and organized in accordance with the provisions of the Railway Labor Act, as amended. Such an organization can establish that it is an employer by establishing, in accordance with
paragraph (b) of this section, that, as a labor organization, national in scope and organized in accordance with the provisions of the Railway Labor Act, as amended, it is a “railway” organization. An organization, doing business on or after June 21, 1934, which has not established such a right of participation, will be presumed not to be a labor organization, national in scope and organized in accordance with the provisions of the Railway Labor Act, as amended, and such presumption can be rebutted only by clear and convincing evidence satisfactory to the Board showing that the reasons for the organization's failure to establish such a right have no relation to its being a labor organization, national in scope and organized in accordance with the provisions of the Railway Labor Act, as amended. Only after such presumption has thus been rebutted will further evidence as to whether the organization is an employer be considered. (The establishment or nonestablishment of such a right of participation will not raise any presumption as to whether an organization is, or is not, a “railway” organization. The existence of this qualification shall be determined in accordance with
paragraph (b) of this section.) An organization will have established such a right of participation if: