Employees' State Insurance (Central) Rules, 1950
46. Recovery of amounts certified to be due
(1) Every sum certified to be due from any person by the Standing Committee or if the certificate has been modified by the Central Government, the sum shown to be due from such person in the modified certificate, shall be paid by such person to the Corporation within three months after he has been served with the certificate of the Standing Committee; or within such longer time as may be allowed by the Central Government, any such sum, if not so paid, shall be recovered as if it were an arrear of land revenue.
(2) Any sum or part of a sum so paid or recovered, the certificate in respect of which is set aside or modified, shall, as the case may require, be wholly or partly refunded to the person who paid it.