Whoever, having been convicted by a court of an offence punishable under this Code, commits the same offence shall, for second, or every subsequent such offence, be punishable with imprisonment for a term which may extend to two years and with fine of two lakh rupees:
    Provided that where such second or subsequent offence is for failure by the employer to pay any contribution, charges, cess, maternity benefit, gratuity or compensation which under this Code he is liable to pay, he shall, for such second or subsequent offence, be punishable with imprisonment for a term which may extend to three years but which shall not be less than two years and shall also be liable to fine of three lakh rupees.