Conn. Agencies Regs. § 31-60-8
(a) For the purpose of this regulation, an "apprentice" means a person at least sixteen years of age who is employed to learn a skilled trade in a bona fide apprentice program under an indenture of apprenticeship approved by the Connecticut State Apprenticeship Council of the labor department. "Apprentice program" means an established program for training skilled workers which shall provide (1) training in a skilled trade, ordinarily recognized as apprenticeable for not less than four thousand hours;
(c) In addition to the records required by section 31-66 of the general statutes and section 31-60-13, the employer shall maintain and retain for the period of apprenticeship the following records: