(1) Every principal employer of an establishment to which this Act applies shall, within such period as the appropriate Government may, by notification in the Official Gazette, fix in this behalf with respect to establishments generally or with respect to any class of them, make an application to the registering officer in the prescribed manner for registration of the establishment:
Provided that the registering officer may entertain any such application for registration after expiry of the period fixed in this behalf, if the registering officer is satisfied that the applicant was prevented by sufficient cause from making the application in time.
(2) If the application for registration is complete in all respects, the registering officer shall register the establishment and issue to the principal employer of the establishment a certificate of registration containing such particulars as may be prescribed.