The Superannuation Act 1949 was an Act of Parliament passed in the United Kingdom by the Labour government of Clement Attlee. Amongst other changes, it ensured that pensions on a contributory basis were provided for the widow and dependants of an established civil servant. It also ensure that a civil servant retiring after his 50th birthday could retain accrued pension rights, which would become payable on his sixtieth birthday (although the Treasury could, on compassionate grounds, grant such a pension immediately).
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Superannuation Act 1949 Wikipedia(Text) CC BY-SA