(A) Once an incumbent is appointed to a post according to rule, his seniority has to be counted from the date of his appointment and not according to the date of his confirmation.
(B) If the initial appointment is not made by following the procedure laid down by the rules but the appointee continues in the post uninterruptedly till the regularisation of his service in accordance with the rules, the period of officiating service will be counted.
(C) When appointments are made from more than one source, it is permissible to fix the ratio for recruitment from the different sources, and if rules are framed in this regard they must ordinarily be followed strictly.
(D) If it becomes impossible to adhere to the existing quota rule, it should be substituted by an appropriate rule to meet the needs of the situation.
(E) Where the quota rule has broken down and the appointments are made from one source in excess of the quota, but are made after following the procedure prescribed by the rules for the appointment, the appointees should not be pushed down below the appointees from the other source inducted in the service at a later date.
(F) Where the rules permit the authorities to relax the provisions relating to the quota, ordinarily a presumption should be raised that there was such relaxation when there is a deviation from the quota rule.
(G) The quota for recruitment from the different sources may be prescribed by executive instructions, if the rules are silent on the subject.
(H) If the quota rule is prescribed by an executive instruction, and is not followed continuously for a number of years, the inference is that the executive instruction has ceased to remain operative.
(I) The posts held by the permanent Deputy Engineers as well as the officiating Deputy Engineers under the State of Maharashtra belonged to the single cadre of Deputy Engineers.
(J) The decision dealing with important questions concerning a particular service given after careful consideration should be respected rather than scrutinised for finding out any possible error.
(K) That a dispute raised by an application under article 32 of the Constitution must be held to be barred by principles of res judicata including the rule of constructive res judicata if the same has been earlier decided by a competent court by a judgment which became final.
Source: M A Rashid, Supreme Court Guidelines and Precedents