; or (ii) is the immediate supervisor of any employee described in clause (i). (B) Limitation Notwithstanding subparagraph (A), the definition of air traffic controller for purposes of section 8336(e) of chapter 83 of title 5 and section 8412(e) of chapter 84 of such title shall mean only employees actively engaged in the separation of air traffic and the immediate supervisors of such employees, as set forth in section 8331(30) of such title, and section 8401(35) of such title. (3) Authority The term Authority means the Federal Labor Relations Authority, as described in section 7104(a) of title 5. (4) Service The term Service means the Federal Mediation and Conciliation Service established by section 202 of the Labor Management Relations Act, 1947 ( 29 U.S.C. 172 ). 91102. Employee management and benefits election (a) Authority of CEO (1) In general Except as otherwise provided by law, the CEO shall classify and fix the compensation and benefits of employees in the Corporation. (2) Negotiations In developing, making changes to, and implementing wages, hours, and other terms and conditions of employment, including when establishing the compensation and benefits program under section 90316(c), the Corporation shall negotiate with exclusive representatives recognized under section 91105. (3) Before date of transfer For purposes of paragraph (2), before the date of transfer, the term exclusive representatives recognized under section 91105 shall refer to labor organizations recognized under section 7111 of title 5 as exclusive representatives of FAA employees. (b) Former Federal employees (1) Federal retirement benefits (A) Election of retirement benefits At least 90 days before the date of transfer, an employee transferring to the Corporation who will be subject to either the Civil Service Retirement System under chapter 83 of title 5 (in this section referred to as CSRS ) or the Federal Employees Retirement System under chapter 84 of title 5 (in this section referred to as FERS ) on the day immediately preceding