2.The case of the appellant is that show cause notice was issued to the appellant's company, which were engaged in the manufacture and sale of Diesel Generator Sets, and the respondent is alloted the Code No.55-21200-32 by the ESI Corporation by covering ESI Scheme. A surprised Inspection was carried out on 31.12.1997 and the Inspector pointed out some alleged irregularities for the period from April 1993 to 1997. While searching the office, it was also pointed out that certain deductions were paid by the Company and it was alleged that the contributions in respect of the remuneration paid to some of the employees like production incentives to the tune of Rs.74,575.60 is made by the said officials. The notice dated 13.10.2001 under Form C-18 as well as the order under Section 45-A of the ESI Act dated 10.01.2002 which refer that the claim for a sum of Rs .88,293 /- under the heads of account viz., Labour Charges, Carriage Inwards, Carriage Outwards and Civil Works Construction are defective as they do not contain reasons or basis for the claim made under the above heads. The said notice dated 13.10.2001 was sent to the appellant herein for recovery of a sum of Rs.88,293/-. The assessment when made, an opportunity ought to have been given to the appellant to explain its stand or chance to file a statement giving full particulars of the contributions actually due. Failing to do so, the department will proceed against them and pass order under Section 45-A of the ESI Act, determining the amount of contributions due from the appellant under the provisions of the ESI Act and will be recovered under Section 45-C to 45-I of the Act, along with interest at 6% per annum up to 19.10.1989 and 12% per annum up to 31.08.1994 and thereafter, at 15% per annum under Section 39 (5) of the ESI Act 1948, payable on arrears of contributions for each day of default or delay in payment of dues. Earlier to this notice on 12.09.2001 itself the earlier letter was written by the appellant, from which it could be seen that the respondent have already sent a Letter No.TN/INS I/-55-21306/C18 (ad hoc), for which, the appellant have sent the said letter dated 12.09.2001, stating that they were in receipt of the letter and since the officer concerned has been transferred, they have requested 30 days time to produce the same, which was signed by the authorized signatory.