(A) Precedent - Judicial discipline - Judge confronted with decision of co-ordinate Bench - Not to take contrary view however glorious it may be - But should refer matter to Larger Bench.AIR 1965 SC 1767 and AIR 1991 SC 1893 : 1991 AIR SCW 2124, Rel. on. (Para 14) (B) Constitution of India , Art.16(4), Art.16(4A), Art.16(4B)— Uttar Pradesh Public Services (Reservation for Scheduled Castes, Scheduled Tribes and Other Backward Classes) Act (4 of 1994) , S.3(7)— Uttar Pradesh Government Servants Seniority Rules (1991) , R.8A— @page-SC2729Reservation in promotion and consequential seniority - Art. 16(4A), (4B) are enabling provision - State can provide for reservation only if there exists backwardness of class and inadequacy of representation - S. 3(7) and R. 8A enacted without identifying concepts of efficiency, backwardness and inadequacy of representation - Are invalid.2011 Lab IC 1377 : 2011 (1) ALJ 428, Reversed. Clause (4A) of Article 16 is an enabling provision. It gives freedom to the State to provide for reservation in matters of promotion. Clause (4A) of Article 16 applies only to SCs and STs. The said clause is carved out of Article 16 (4). Therefore, Clause (4A) will be governed by the two compelling reasons "backwardness" and "inadequacy of....