Kamal Sengupta and another ... Respondents JUDGMENT G.S. Singhvi, J. 1. Whether a Tribunal established under Section 4 of the Administrative Tribunals Act (for short `the Act') can review its decision on the basis of subsequent order/decision/judgment rendered by a coordinate or larger bench or any superior Court or on the basis of subsequent event/development is the question which arises for determination of this appeal filed by the State of West Bengal and others against the judgment of the High Court of Calcutta, whereby the said High Court declined to 2 interfere with order dated 25.9.2001 passed by the West Bengal Administrative Tribunal (for short `the Tribunal') in R.A. No.26 of 1998. 2. The facts necessary for deciding the aforementioned question are as under: (i) Respondents Kamal Sengupta and Narayan Chandra Ghosh appeared in the competitive examination conducted by the West Bengal Public Service Commission in 1973 for recruitment to West Bengal Civil Services (Executive) and other Allied Services. They were declared successful and were allotted to West Bengal Food and Supplies Service (hereinafter described as `the service'). Initially, they were posted as SubDivisional Controller of Food and Supplies. In due course, they were promoted as Assistant Director, Deputy Director and finally as Director and their pay was fixed in the scales prescribed for those posts. They were also given the benefit of revised scales under the West Bengal (Revision of Pay and Allowance) Rules, 1981 (hereinafter referred to as `ROPA 1981') and the West Bengal (Revision of Pay and Allowance) Rules, 1990 (hereinafter referred to as `ROPA 1990'). 3 (ii) After 20 years of joining the service, the respondents filed Writ Petition No.1547 of 1995 for quashing letter dated 6.1.1995 vide which the Finance Department of the State Government rejected their claim for grant of Pay Scale Nos.19 and 21 in terms of the Career Advancement Scheme (for short `the Scheme') framed by the Government of West Bengal, which was circulated vide Memorandum dated 21.6.1990 and for issue of a mandamus to the State Government to take action in accordance with the recommendations made by Secretary, Food and Supplies Department vide his DO No.G5250/FC dated 5.10.1992, G5302/FC dated 16.10.1992 and Con223/FS dated 27.4.1994. They further prayed for issue of direction to the nonpetitioners (the appellants herein) to declare the posts in Scale Nos.19 and 21 under Rule 2(b) of ROPA 1990 to be in the ranks of Joint Secretary and Special Secretary respectively and sanction those posts for members of the service in the same ratio as was done in the case of West Bengal Civil Services Officers. (iii) In the affidavit filed by him in support of the writ petition, Narayan Chandra Ghosh (respondent no.2 herein) referred to the factum of sanction of Pay Scale Nos.17, 18 and 19 to members of the service 4 under ROPA 1981, recommendations made by the Third Pay Commission, the Scheme and averred that they have been subjected to hostile discrimination in the matter of grant of Scale Nos.19 and 21. For the sake of reference, paragraphs 5, 9, 13, 17 and 18 of the affidavit of respondent no.2 are reproduced below : "5. That the petitioners having entered in to W.B.F.& S.S., in the year of 1974/75 after successfully passing the West Bengal Civil Service (Executive) and certain allied service examination held in 1973 were first posted in the basic grade posts of SubDivisional Controller of Food and Supplies and thereafter in recognition to meritorious service since rendered by them were posted in different senior posts and posts with higher responsibilities like Assistant Director, Deputy Director and lastly were posted as Director in the year of 1991 and 19