Brief facts of the case which have led to the filing of the instant appeal are that the appellants had worked on the post of Senior Deputy Advocate General, Haryana, Assistant Advocate General, Haryana and Assistant Advocate General, Haryana respectively in the office of the Advocate General, Haryana. They retired from service on 31.08.1981, 31.12.1981 and 31.01.1995 respectively. It is pertinent to mention that appellant No.1 had sought pre-mature retirement. All of them were getting N.P.A. Appellant No.1 used to get Rs. 700/- as N.P.A. while appellant Nos. 2 and 3 used to be paid Rs. 500/- each. After retirement, N.P.A. was being treated as Special Pay within the meaning of Rule 2.52(b) of the Punjab Civil Service Rules, Volume 1 Part 1. Accordingly, their pension used to be calculated after merging N.P.A. to their basic pay. All the appellants have been drawing pension on that basis since their retirement even after the revision of pension from time to time.