In this title, “part-time employee” means an employee who works an average of 50% or more but less than 100% of the regular workweek. An individual who is a full-time employee who is qualified for or desires to be a full-time employee may not be required to accept part-time employment as a condition of continued or new State employment. An individual who is a part-time employee who is qualified for or desires to be a part-time employee may not be required to accept full-time employment as a condition of continued or new State employment. In accordance with regulations adopted by the Secretary, a part-time employee is entitled to receive all employment rights, privileges, and benefits that are normally available to a full-time employee in a similar position with a similar grade and length of service. Benefits shall be prorated in proportion to the number of hours employed.