It is the policy of the University to provide full-time tenured faculty members the opportunity to enter modified service at age 55 or when the combined years of service and age equals 80, regardless of the retirement program, when in the best interest of the University. In modified service, the faculty member shall relinquish full-time status and tenure in exchange for a commitment on the part of UNT to pay a proportion of the salary at the time of retirement commensurate with the workload each academic year. The assignment of workload must conform to the Policy on Academic Workloads (UNT Policy 06.027). The proportion of salary and work load may be up to one-half during both fall and spring semesters or 100 percent during either (but not both) of a fall and spring semester of a single academic year for up to three years.