Douglas East MHK Chris Robertshaw has branded a discrepancy between public sector and state pensions as "wholly unfair".
It relates to the plans that would see the early retirement extended for the general public, but left unaltered for those claiming public sector pensions.
He's written to the President of Tynwald urging a review of the decision.
Mr Robertshaw says it will only lead to more resentment from the Manx public:
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