18.3.2015 and relief sought for in the OA, the Tribunal thought valid and proper to issue prior notice to the respondents before passing orders, if any, while admitting the said OA. The principle of audi alteram partem warrants issuance of prior notice when the decisions will have " consequences" on a citizen or a party and, therefore, such a citizen or a party is entitled to an opportunity of prehearing if the circumstances justify a prehearing and the same cannot be excluded on various considerations like delay and other factors that are generally pleaded for the exclusion of the said principle. As to the necessity or a requirement of an opportunity of hearing, the Tribunal has no option, but as to the manner and extent of the opportunity that depends on the circumstances of each case, the nature of enquiry and various other factors, would normally directs issuance of notice. In enunciating the principle, the Supreme Court has pointed out, that the same was in the interest of fair-play, good administration and the rule of law envisaged by our Constitution. In view thereof, having regard to the facts and circumstances pleaded in the OA, the Tribunal rightly ordered notice to the respondents while admitting the OA. In that view of the matter, we do not see any illegality or irregularity in ordering notice while admitting the OA by the Tribunal.