; (ii) an employee of the Government Accountability Office; or (iii) an employee of a covered employer described in paragraph (6)(B)(i)(V) who performs work that has been traditionally performed by employees in a railroad industry craft or class recognized under the Ninth paragraph of section 2 of the Railway Labor Act ( 45 U.S.C. 152 ), including any employee who performs— (I) work with respect to the movement of trains; (II) maintenance of way work; (III) signal work; (IV) work for purposes of the inspection, maintenance, repair, or cleaning of locomotives, rail maintenance facilities, rail-related equipment, or rail cars; (V) dispatching work; (VI) work with respect to the movement of equipment within a rail yard; or (VII) rail clerical or communications work; (B) a State employee described in section 304(a) of the Government Employee Rights Act of 1991 (42 U.S.C. 2000e–16c(a)); (C) a covered employee, as defined in section 101 of the Congressional Accountability Act of 1995 ( 2 U.S.C. 1301 ), other than an applicant for employment; (D) a covered employee, as defined in section 411(c) of title 3, United States Code; or (E) a Federal officer or employee covered under subchapter V of chapter 63 of title 5, United States Code (without regard to the limitation in section 6381(1)(B) of that title). (6) Employer (A) In general The term employer means a person who is— (i) (I) a covered employer who is not described in any other subclause of this clause; (II) an entity employing a State employee described in section 304(a) of the Government Employee Rights Act of 1991; (III) an employing office, as defined in section 101 of the Congressional Accountability Act of 1995; (IV) an employing office, as defined in section 411(c) of title 3, United States Code; or (V) an employing agency covered under subchapter V of chapter 63 of title 5, United States Code