; (D) a covered employee, as defined in section 411(c) of title 3, United States Code; (E) a Federal officer or employee covered under subchapter V of chapter 63 of title 5, United States Code; or (F) an employee of the Government Accountability Office. (3) Employer The term employer — (A) (i) means any person in commerce that— (I) employs more than 15 employees described in paragraph (2)(A), which shall be calculated by including all employees described in paragraph (2)(A) performing work for compensation on a full-time, part-time, or temporary basis, except that if the number of such employees who perform work for such a person for compensation fluctuates, the number may be determined for a calendar year based upon the average number of such employees who performed work for the person for compensation during the preceding calendar year; or (II) is part of an integrated enterprise, chain of businesses, group of franchises associated with a franchisor, or network of franchises that, in the aggregate, employs more than 15 employees, calculated in accordance with subclause (I); (ii) includes— (I) any person who acts, directly or indirectly, in the interest of such an employer to any of the employees (described in clause (i)) of such employer; and (II) any successor in interest of such an employer; and (iii) includes an agency described in subparagraph (A)(iii) of section 101(4) of the Family and Medical Leave Act of 1993 ( 29 U.S.C. 2611(4) ), to which subparagraph (B) of such section shall apply; (B) is an entity employing a State employee described in section 304(a) of the Government Employee Rights Act of 1991 (42 U.S.C. 2000e–16c(a)); (C) is an employing office, as defined in section 101 of the Congressional Accountability Act of 1995 ( 2 U.S.C. 1301 ); (D) is an employing office, as defined in section 411(c) of title 3, United States Code; (E) is an employing agency covered under subchapter V of chapter 63 of title 5, United States Code