Normal retirement from the University is available at age 65 with at least five years of service. See Early Retirement. Occurrences "Occurrence" is a term used to identify specific instances of absence under the University's attendance policies which are counted in determining the attendance record of a staff employee. One occurrence of absence under the policy may consist of such instances as a single day, a period of consecutive days or weeks, or a series of tardies or early departures from work. See Attendance Standards.