This section applies to all employees, including temporary employees, of all units in the Executive, Judicial, and Legislative branches of State government, including any unit with an independent personnel system. On request, an employee subject to this section may be entitled to organ donation leave with pay. An employee may use: up to 7 days of organ donation leave in any 12–month period to serve as a bone marrow donor; and up to 30 days of organ donation leave in any 12–month period to serve as an organ donor. An employee may use organ donation leave only after obtaining approval from the employee’s appointing authority. The Secretary shall adopt regulations governing organ donation leave, including regulations that establish conditions and procedures for requesting and approving leave and that require medical documentation of the proposed organ or bone marrow donation before leave is approved.