You may lose all or part of the benefits provided by this plan if you:
                   
                       - Previously opted out of CERF and do not purchase the opted-out period of service; 
 
                       - Do not purchase the service during a military leave of absence; 
 
                       - Are a part-time employee and do not purchase the period of service in which you earned your first 1,000 hours in the calendar year before you became a plan participant; 
 
                       - Terminate employment before you become vested in this plan (if you are later rehired, you may purchase this service for service credit); 
 
                       - Have not paid the required contributions; 
 
                       - Choose not to purchase your prior service.