You are very slim on details in your query. Does it relate to preserved benefits? If so, this 1975 circular may be relevant :
https://circulars.gov.ie/pdf/letter/finance/1975/2.pdf Extract:
"12.(1)An officer who resigns voluntarily after at least 5 years' service will, provided he cannot benefit under paragraph 11 above, or otherwise, have his pension' lump sum and death benefits preserved. Pension and lump sumwill be paid as from age 60 upon application for payment being made. If he dies before age 60 a death gratuity equivalent to the lump sum (i.e. based on actual service only) will be payable. If he was a member of the contributory widows' and children's scheme and leaves a widow whomhemarried before he resigned, she, and any of their children conceived before his resignation, will be eligible for pensions in accordance with the terms of the contributory scheme. Such pensions will, however, be based on actual service only (credit will not be given for potential service). Any contributions due in respect of prior service reckonable under the contributory widows' and children's scheme will be deducted fromthe lump sumor death gratuity.
(2) The preserved benefits will be based or actual reckonable service and on the officer's pensionable remuneration as increased by reference to pensions increases granted in the interim. Any contributions due under the contributory widows' and children's scheme will also be based on such pensionable remuneration.
Example: An Assistant Principal resigns in 1975 having given 20 years' pensionable service; his date of birth is 20 April, 1935. His pension and lump sum will come into payment on 20 April, 1995. Any widows' and children's scheme contribution due in respect of service prior to 1 January 1969 will be deducted from the lump sum. The pension, lump sum and contributions will be based upon the rate of pensionable remuneration which would then be appropriate under the Pensions (Increase) Act, 1964, if the pension had been awarded at the date of resignation.
(3) It should be noted that there is no right to re-employment following voluntary resignation or transfer of service.
(4) Where an officer proposes to resign with preserved benefits hisDepartment should complete a form E Gen 8 in respect of him and advise him of the need to apply for the payment of the preserved benefits when he reaches age 60. In order to enable consideration to be given to the possibility of transferring his service, the officer should let his Department know what employment he is taking up. A copy of the E Gen 8 should be forwarded to this Department."
You will find a list of relevant legislation and circulars on Superannuation up to 2006 in Appendix 1 in this document :
http://www.cspensions.gov.ie/SuperannuationHandbookandGuidanceDec20061.pdf