Seniority by continuous officiation replaced rota-quota after recruitment rules removed the fixed promotee quota.

The SC held that the rota-quota principle governed seniority only until the Customs Appraisers Service Class II Recruitment Rules, 1961 came into force. Because the Rules required at least 50% of cadre posts to be filled by direct recruitment without preserving a fixed promotee quota, the earlier rotational seniority basis lost its foundation thereafter. For Appraisers appointed on and from the 1961 Rules, seniority in the all-India combined list was to be determined by continuous officiation, while pre-1961 appointments remained subject to the earlier rota rule. The Tribunal's approach was therefore sustained with limited modification.

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Issues: (i) whether the rota-quota principle continued to govern seniority between direct recruits and promotees after the Customs Appraisers Service Class II Recruitment Rules, 1961 came into force; (ii) whether the all-India combined seniority list of Appraisers had to be prepared on the basis of continuous officiation from the date of the 1961 Rules.

Issue (i): whether the rota-quota principle continued to govern seniority between direct recruits and promotees after the Customs Appraisers Service Class II Recruitment Rules, 1961 came into force.

Analysis: Prior to the 1961 Rules, seniority was regulated by the rotational system approved in the earlier service circulars and upheld in the earlier constitutional challenge involving direct recruits and promotees. The 1961 Rules, however, altered the scheme by mandating that at least fifty per cent of the cadre posts be filled by direct recruitment, without fixing a corresponding unalterable quota for promotees. Once the quota structure ceased to be fixed, the rota-based method lost its foundation and could no longer continue as the governing principle under the Rules.

Conclusion: The rota-quota principle continued only up to the commencement of the 1961 Rules and did not survive thereafter.

Issue (ii): whether the all-India combined seniority list of Appraisers had to be prepared on the basis of continuous officiation from the date of the 1961 Rules.

Analysis: The service had become an all-India service, and after the 1961 Rules there was no fixed quota for promotees comparable to the earlier regime. Direct recruits were to be arranged according to the order fixed by the selecting authority, while promotees entered the service on promotion from regional feeder cadres. In that setting, the Court approved the Tribunal's approach that seniority for Appraisers appointed on or after the 1961 Rules should be worked out on the basis of continuous officiation, while appointments made before that date remained governed by the earlier rota-based rule.

Conclusion: The combined all-India seniority list was to be prepared on the basis of continuous officiation for Appraisers appointed on and from the 1961 Rules, with the earlier rota rule preserved only for the pre-1961 period.

Final Conclusion: The judgment reconciled the pre-1961 and post-1961 seniority regimes by preserving the earlier rotational rule for the former period and substituting continuous officiation for the latter, thereby sustaining the Tribunal's result with limited modification.

Ratio Decidendi: Where recruitment rules discard a fixed promotee quota and assure only a minimum share for direct recruits, the rota-quota system ceases to govern seniority and seniority must thereafter be determined on the basis of continuous officiation, subject to any earlier period where the quota-rota rule validly operated.

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