The panel affirms the final determination of the Board of Trustees of the Police and Firemen's Retirement System, finding former corrections officer Paul Mattia was not eligible for accidental disability retirement benefits, pursuant to N.J.S.A. 43:16A-7. The panel distinguished Kasper v. Board of Trustees, Teachers' Pension and Annuity Fund, 164 N.J. 564 (2000), where the Supreme Court determined an education media specialist, who was mugged on the steps of the school when she arrived early to distribute materials prior to the official start of classes, had finished her commute for purposes of pension analysis.Mattia suffered a disabling injury when he slipped and fell on ice in the parking lot of the jail where he was employed, before he was able to check in and receive his assignment. Because Mattia had not yet begun performing his regular assigned duties, the Board denied his claim for accidental disability retirement benefits, determining he was still commuting when he was injured. In doing so, the Board rejected the decision of an Administrative Law Judge granting Mattia's petition. The panel affirmed, finding he was still commuting when he fell in the parking lot.