Spain, J.
Petitioner's father, Samuel Ramsey, Jr. (hereinafter decedent), died in September 1989 after designating petitioner as the beneficiary of his State retirement system benefits. Decedent had made an election of benefit payments under "Option Three", as set forth in Retirement and Social Security Law § 90 (a), which resulted in petitioner's receiving a lifetime allowance of $260 per month. Dissatisfied with this arrangement, petitioner applied to respondent for a lump-sum settlement of decedent's entire retirement account, basing his request upon representations of extreme financial hardship. Following an administrative hearing, a Hearing Officer recommended denial of petitioner's application and respondent subsequently adopted that recommendation. Petitioner then commenced this CPLR article 78 proceeding. We confirm.
In general, absent a showing that a decedent was mentally incompetent when he elected the payment option for his retirement benefits or that his election was the result of a mistake, respondent will not change the option chosen by a decedent ( see, Ortelere v Teachers' Retirement Bd., 25 N.Y.2d 196; Matter of Cummings v New York State Local Employees' Retirement Sys., 187 A.D.2d 862, appeal dismissed 81 N.Y.2d 834; Matter of Ward v New York State Local Retirement Sys., 180 A.D.2d 1005). Petitioner has made no such showing, contending only that he would prefer to be paid in a lump sum rather than in the monthly installments selected by decedent. Given petitioner's failure to present a valid ground for the requested change, together with the deference this Court accords to the interpretation given to a statute by the administrative agency charged with its enforcement ( see, Matter of Whitehill v New York State Teachers' Retirement Sys., 142 A.D.2d 902, 903, affd 73 N.Y.2d 944), respondent's denial of petitioner's application is confirmed.
Mikoll, J.P., Crew III, White and Yesawich Jr., JJ., concur. Adjudged that the determination is confirmed, without costs, and petition dismissed.