Conn. Gen. Stat. § 5-239

The Commissioner of Administrative Services shall provide by regulations adopted in accordance with the provisions of chapter 54 for the transfer of employees from a position of a given class to another position in the same or a comparable class either within the same department, agency or institution or from one department, agency or institution to another. The commissioner shall also provide by regulation for the periodical or occasional transfer of employees for a period not exceeding six months, to bring about the better distribution of persons in the service, to effect economies, to make available extra stenographic, clerical, messenger or other service needed for short periods or to provide training sought by employees or required by appointing authorities. When any department, agency or institution needs additional employees for a short period, it shall notify the commissioner, who shall so far as possible arrange for the temporary assignment of such additional employees on the basis of a temporary transfer. No person shall be transferred from a position in the unclassified service to a position in the classified service unless the person is eligible for selection from a candidate list in accordance with the provisions of section 5-215a .