Promotion in a selection post must be based on comparative merit where the rules do not give seniority priority.

The Supreme Court decision discussed the limits of res judicata and Article 141, holding that an earlier ruling confined to eligibility did not bar reconsideration of the promotion method under the recruitment rules. Rule 11 was treated as setting eligibility criteria for consideration against the promotional quota, not as creating separate promotion streams for degree-holders and diploma-holders. For a selection post, the Court stated that, absent any rule giving priority to seniority or seniority-cum-merit, promotion must rest on comparative merit among all eligible candidates. The Court also protected promotions already made pending a fresh merit-based exercise.

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Issues: (i) whether the earlier decision precluded reconsideration of the method of promotion under the recruitment rules by operation of res judicata and Article 141; (ii) whether Rule 11 of the Recruitment Rules created separate promotion streams for degree-holders and diploma-holders or only prescribed eligibility; and (iii) whether, for a selection post, seniority in the feeder grade could control promotion in the absence of any rule giving it priority over merit.

Issue (i): whether the earlier decision precluded reconsideration of the method of promotion under the recruitment rules by operation of res judicata and Article 141.

Analysis: The earlier decision had construed the rule only to the extent of eligibility for consideration against the degree-holders quota. It did not decide the distinct question whether, after a candidate became eligible, his past service as a diploma-holder could be counted for seniority or the manner in which eligible candidates were to be considered for promotion. Since that issue had not been directly and substantially decided, neither res judicata nor the binding force of Article 141 barred its examination.

Conclusion: The earlier decision did not preclude adjudication of the promotion procedure issue.

Issue (ii): whether Rule 11 of the Recruitment Rules created separate promotion streams for degree-holders and diploma-holders or only prescribed eligibility.

Analysis: Rule 11 was read as laying down eligibility for consideration against the 50% promotional quota, namely three years' service after acquiring the degree or, failing that, six years' service as a diploma-holder. The rule did not create watertight compartments or separate avenues of promotion. The cases relied upon involving rules with express separate channels were distinguished on that basis.

Conclusion: Rule 11 prescribed eligibility only and did not create separate promotion streams.

Issue (iii): whether, for a selection post, seniority in the feeder grade could control promotion in the absence of any rule giving it priority over merit.

Analysis: The post of Assistant Engineer was a selection post under the recruitment rules. In the absence of any rule providing for seniority-cum-merit or otherwise giving priority to earlier eligibility, seniority in the feeder grade could not override assessment of comparative merit. The Government's practice of counting service only from the date of acquiring the degree, and the High Court's direction to count pre-degree service as well, were both inconsistent with the selection-post framework and with the constitutional requirement of equality of opportunity in public employment.

Conclusion: Promotion had to be made on merit among all eligible candidates, and seniority in the feeder grade was not decisive.

Final Conclusion: The impugned judgment was set aside and the eligible Section Officers or Junior Engineers were directed to be considered for promotion on merit, while already made promotions were protected until the fresh exercise was completed.

Ratio Decidendi: Where the governing rule makes a post a selection post and does not accord priority to seniority or earlier eligibility, promotion among eligible candidates must be made on comparative merit, and an earlier decision confined to eligibility does not bar reconsideration of the promotion method on the basis of res judicata or Article 141.

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