Statutory service rules control seniority over administrative orders where qualification date conflicts with rule-based appointment seniority.

Statutory service rules framed under Article 309 prevailed over administrative instructions on seniority in Panchayat Development Units. The Court treated earlier decisions as per incuriam because they ignored the governing rules, including Rules 35(q) and 35(r), and held they could not bind the Court. Those rules controlled the service position of protected and later-appointed employees, so seniority had to follow the rule-prescribed basis of appointment and continuous service rather than the mere date of passing the qualifying test. G.O. Ms. No. 783, which fixed seniority by qualification date, was inconsistent with that statutory scheme and could not stand.

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Issues: (i) Whether the earlier decisions fixing seniority by reference to the date of passing the qualifying test were per incuriam and could not bind the Court in view of the governing statutory rules. (ii) Whether G.O. Ms. No. 783, fixing seniority in the Panchayat Development Units with reference to the date of acquiring test qualification, was valid in the face of Rules 35(q) and 35(r) of the Tamil Nadu Ministerial Service Rules.

Issue (i): Whether the earlier decisions fixing seniority by reference to the date of passing the qualifying test were per incuriam and could not bind the Court in view of the governing statutory rules.

Analysis: The earlier view proceeded on the mistaken assumption that G.O. Ms. No. 2155 had statutory force and did not notice the later statutory rules framed under Article 309 of the Constitution. The Court held that a decision rendered in ignorance of relevant statutory provisions can be treated as per incuriam and need not be followed as binding precedent. The existence of Rules 35(q) and 35(r), which directly governed the service conditions and seniority consequences of the concerned employees, made the earlier reasoning unsustainable.

Conclusion: The earlier decisions were held to be per incuriam and were overruled.

Issue (ii): Whether G.O. Ms. No. 783, fixing seniority in the Panchayat Development Units with reference to the date of acquiring test qualification, was valid in the face of Rules 35(q) and 35(r) of the Tamil Nadu Ministerial Service Rules.

Analysis: Rules 35(q) and 35(r), made retrospectively operative from 16-10-1964, were held to be the governing special rules. Rule 35(q) protected persons already holding the posts on that date from reversion and preserved their continuity in service, while Rule 35(r) separately dealt with persons appointed later and provided for reversion if they failed to pass within the prescribed time, subject to the limited proviso for selected Assistants. The Court further held that special rules prevail over administrative instructions and that, for employees protected by these rules, seniority was to be determined by the date of appointment and continuous length of service, not merely by the date of passing the test. G.O. Ms. No. 783, which adopted the qualification-date basis, was therefore inconsistent with the statutory scheme.

Conclusion: G.O. Ms. No. 783 was held invalid and was quashed.

Final Conclusion: The governing special rules under Article 309 controlled seniority and promotional consequences in the Panchayat Development Units, and the contrary administrative basis adopted in the impugned Government Order could not stand.

Ratio Decidendi: Where statutory service rules made under Article 309 specifically govern seniority and the consequences of non-qualification, an administrative order contrary to those rules is invalid, and seniority for protected categories must be determined by the rule-prescribed basis rather than by the mere date of passing the qualifying examination.

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