IDA pension computation bars higher CDA dearness relief where retired PSU employees already drew IDA benefits.

Retired employees of a public sector company who had moved to IDA pay scales were held not entitled to dearness relief on pension at Central Government CDA rates as a separate vested benefit. The Court read the pension rules and governing office memoranda together and held that pension had to be computed on the emoluments actually drawn in the IDA scale at retirement. Dearness relief was treated as distinct from pension, and any payment at CDA rates made earlier was characterised as a bona fide mistake that did not create an enforceable right. The claim to a dual benefit therefore failed.

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Issues: Whether retired employees of the public sector company who had been placed on IDA pay scales and IDA dearness relief were entitled to draw dearness relief on pension at Central Government rates and thereby obtain a double benefit.

Analysis: The relevant pension framework treated emoluments for pension purposes with reference to the pension rules, including the special deeming provision for employees transferred to an autonomous body or PSU. The Court read the governing office memoranda and the pension rules together and held that employees who had shifted to IDA scales were to have their pension computed on the basis of the emoluments actually drawn in the IDA scale at retirement. Dearness relief was treated as separate from pension, and the Court held that it could not be claimed as an accrued or vested right at a higher CDA rate where the employee had already moved to the IDA regime. Any earlier payment at CDA rates was characterised as a bona fide mistake that did not create an enforceable entitlement.

Conclusion: The retirees were not entitled to dearness relief on pension at Central Government rates after drawing IDA pay and IDA dearness relief; the claim for dual benefit failed.

Final Conclusion: The appeal succeeded, the writ petition stood dismissed, and the pensionary benefits, if earlier paid by mistake or under the High Court's order, were not directed to be recovered.

Ratio Decidendi: Where transferred employees retire on IDA pay scales, pension must be computed on IDA emoluments and dearness relief cannot be separately claimed at a higher CDA rate as a vested right.

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