basis of the material available to it, after giving reasonable opportunity. But, where the records are produced, the assessment has to be made under Section 75(2)( a ) of the Act. Section 45A(2) provides that the order under Section 45A(1) shall be used as sufficient proof of the claim of the corporation under Section 75 or for recovery of the amount determined by such order as arrears of land revenue under Section 45B. In other words, when there is a failure in production of records and when there is no cooperation, the corporation can determine the amount and recover the same as arrears of land revenue under Section 45B. But, on the other hand, if the records are produced and if there is cooperation, the assessment has to be made and it can be used as a sufficient proof of the claim of the corporation under Section 75 before the ESI Court. So, the limitation of three years for filing an application before the court, introduced by Act 44 of 1966, can only relate to the application under Section 75 read with Section 77(1A). The order under Section 45A need not be executed by the corporation before the ESI Court under Section 77. As such, the amendment to Section 77(1A)( b ) proviso by Act 29 of 1989 providing five-year limitation has no relevance so far as orders passed by the corporation under Section 45A are concerned.