20. Chapter not to apply to certain establishments.-
(1) This Chapter shall not apply-
(a) to any establishment registered under the Co-operative Societies Act, 1912 (2 of 1912) or under any other law for the time being in force in any State relating to co-operative societies employing less than fifty persons and working without the aid of power; or
(b) to any other establishment belonging to or under the control of the Central Government or a State Government and whose employees are entitled to the benefit of contributory provident fund or old age pension in accordance with any scheme or rule framed by the Central Government or the State Government governing such benefits; or
(c) to any other establishment set up under any Central or State or any other law for the time being in force and whose employees are entitled to the benefits of contributory provident fund or old age pension in accordance with any scheme or rule framed under that law governing such benefits; or
(d) to the employees who, immediately before the commencement of this Code, were receiving benefits of Provident Fund under any Central or State enactment.
(2) If the Central Government is of the opinion that having regard to the financial position of any class of establishment or other circumstances of the case, it is necessary or expedient so to do, it may, by notification and subject to such conditions, as may be specified in the notification, exempt, whether prospectively or retrospectively, that class of establishments from the operation of this Chapter for such period as may be specified in the notification.