V. Dhanapalan, J.

1. This writ appeal is directed against the order of a learned single Judge dated 27.09.2010 made in W.P. No: 12350 of 2009 in and by which the learned single Judge allowed the writ petition holding that the writ petitioner is entitled to 18% interest on the principal and seeking to set aside the same.

2. The appellant, Commissioner of Corporation of Chennai, has assailed the order of the writ Court in fixing the interest at 18% on the delayed payment of pension by contending that it is very high, exorbitant and is against the principles and guidelines issued with regard to fixation of interest. He also raised a ground that granting of interest on the principal amount, in the absence of any statutory rules or administrative guidelines, is unsustainable and as per the bye-laws of the respondent passing of Account Test for subordinate officers Part I and District Officers manual Examination are pre-requisite qualification test for the post of Assistant and therefore, the promotion given to the Assistant as Section Manager based on the seniority only upto the year 2000 and for those who were promoted on or after the date of resolution, passing of Account Test f