(8)During the absence of the Chairman the [Working Chairman] [Substituted vide Orissa Gazette Extraordinary No. 1836 dated 27.12.2004 (O.A. 12 of 2004).] shall act as and perform the functions of the Chairman :Provided that the Secretary to the Government in the Law Department shall act as and perform the functions of the Chairman during any period when both the officers of the Chief Minister and the Minister of Law remain vacant.