THE RAILWAYS ACT, 1989: Chapter II(A) – Section 4(G)

4(G) Appointment of Officers and Other Employees of Authority

(1) For the purpose of enabling it efficiently to discharge its functions under this Act, the Central Government shall provide the Authority with such officers and other employees, and the Authority shall, subject to the Rules as may be made by the Central Government in this behalf, appoint, whether on deputation or otherwise, such number of officers and other employees as it may deem necessary.
(2) The salaries and allowances payable to, and the other terms and conditions of service of, the officers and other employees appointed for the purpose of the Authority, shall be such as may be prescribed.

Forward reference⇒Section 4(H)