The director of administrative services may establish paid leaves and employee benefits for eligible full-time fire fighters employed by the adjutant general’s department that are comparable to paid leaves and employee benefits provided to other full-time permanent employees paid directly by warrant of the director of budget and management. Any paid leaves and employee benefits established under this section shall be limited to fire fighters regularly scheduled to work at least one hundred four hours per biweekly pay period and shall be adjusted so that the ratio between the hours worked and the paid leave hours earned shall be the same as the ratio between the hours worked and the paid leave hours earned by full-time permanent employees with the same amount of accrued service. The director of administrative services shall adopt rules in accordance with Chapter 119. of the Revised Code governing any paid leaves and employee benefits established under this section.