(1) The term “employer” shall include— (i) any carrier by railroad subject to the jurisdiction of the Surface Transportation Board under part A of subtitle IV of title 49; (ii) any company which is directly or indirectly owned or controlled by, or under common control with, one or more employers as defined in paragraph (i) of this subdivision, and which operates any equipment or facility or performs any service (except trucking service, casual service, and the casual operation of equipment or facilities) in connection with the transportation of passengers or property by railroad, or the receipt, delivery, elevation, transfer in transit, refrigeration or icing, storage, or handling of property transported by railroad; (iii) any receiver, trustee, or other individual or body, judicial or otherwise, when in the possession of the property or operating all or any part of the business of any employer as defined in paragraph (i) or (ii) of this subdivision; (iv) any railroad association, traffic association, tariff bureau, demurrage bureau, weighing and inspection bureau, collection agency and any other association, bureau, agency, or organization which is controlled and maintained wholly or principally by two or more employers as defined in paragraph (i), (ii), or (iii) of this subdivision and which is engaged in the performance of services in connection with or incidental to railroad transportation; and (v) any railway labor organization, national in scope, which has been or may be organized in accordance with the provisions of the Railway Labor Act, as amended [ 45 U.S.C. 151 et seq.], and its State and National legislative committees, general committees, insurance departments, and local lodges and divisions, established pursuant to the constitution or bylaws of such organization.


45 USC § 231(a)(1)

Scoping language

For the purposes of this subchapter
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