Section 4A(3) in The Employee's Compensation Act, 1923
(3)Where any employer is in default in paying the compensation due under this Act within one month from the date it fell due, the Commissioner shall—(a)direct that the employer shall, in addition to the amount of the arrears, pay simple interest thereon at the rate of twelve per cent. per annum or at such higher rate not exceeding the maximum of the lending rates of any scheduled bank as may be specified by the Central Government, by notification in the Official Gazette, on the amount due; and(b)if, in his opinion, there is no justification for the delay, direct that the employer shall, in addition to the amount of the arrears and interest thereon, pay a further sum not exceeding fifty per cent. of such amount by way of penalty:Provided that an order for the payment of penalty shall not be passed under clause (b) without giving a reasonable opportunity to the employer to show cause why it should not be passed.Explanation.— For the purposes of this sub-section, "scheduled bank" means a bank for the time being included in the Second Schedule to the Reserve Bank of India Act, 1934 (2 of 1934).