Conn. Gen. Stat. § 5-216

(b) Where the needs of the service indicate that continuous recruitment is justified, the commissioner may defer announcing a closing date for filing applications for the examination. Announcements of such examinations shall specify that recruitment is continuous and that applications may be filed until further notice. Such examination may be graded on a pass-fail basis in order to expedite certification and appointment.

(c) The commissioner may consolidate, continue or cancel candidate lists and may remove names from such lists for good cause. The commissioner may apply an examination score from one examination to the candidate list established for another examination, provided such examinations are the same or equivalent forms of the same examination, such provision is publicized on appropriate examination notices and the candidate satisfies all other statutory requirements.

(d) Upon written request from a candidate on a form and in a manner prescribed by the Department of Administrative Services, the commissioner shall apply the candidate's most recent score from an examination held for a promotional appointment, in accordance with subsection (b) or (c) of section 5-228 , to the candidate list established for a subsequent examination for the same classification, provided: (1) The subsequent examination is in the same or equivalent form as the previous examination; (2) such provision is publicized on appropriate examination notices; (3) the candidate satisfies all other requirements for the classification and the examination; and (4) not more than seven years have elapsed from the date of the candidate's most recent examination.

(e) Nothing in this section shall prevent the department from applying scores from one examination to the candidate list established for a subsequent examination for the same classification, provided: (1) Such examinations are in the same or equivalent forms; (2) such provision is publicized on appropriate examination notices; and (3) the candidates on the list satisfy all other requirements for the classification and the examination.

(f) The provisions of subsections (d) and (e) of this section shall not apply to any promotional examination held for classifications in the department's police-protective services occupational group.

(g) Notwithstanding any provision of the general statutes, upon a finding by the commissioner that the posting of job openings is warranted to provide regular, updated candidate pools for specific examined and nonexamined positions, the commissioner may place the names of persons on a candidate list for the various classes of positions in the classified service.