A temporary appointment may be made without regard to the rules of sections 124.01 to 124.64 of the Revised Code. Except as otherwise provided in this division, the temporary appointment may not continue longer than one hundred twenty days, and in no case shall successive temporary appointments be made. A temporary appointment longer than one hundred twenty days may be made if necessary by reason of sickness, disability, or other approved leave of absence of regular officers or employees, in which case it may continue during the period of sickness, disability, or other approved leave of absence, subject to the rules of the director.
R.C. § 124.30