When used in sections 31-22m to 31-22q, inclusive, and 31-22u, “apprentice” means a person who is employed under a written agreement to work at and learn a specific trade and who is registered with the Labor Department; “apprentice agreement” means a written agreement entered into by an apprentice, or on his behalf by his parent or guardian, with an employer, or with an association of employers and an organization of employees acting as a joint apprenticeship committee, which agreement provides for not less than two thousand hours of work experience in approved trade training consistent with recognized requirements established by industry or joint labor-industry practice and for the number of hours of related and supplemental instructions prescribed by the Connecticut State Apprenticeship Council or which agreement meets requirements of the federal government for on-the-job training schedules which are essential, in the opinion of the Labor Commissioner, for the development of manpower in Connecticut industries; “council” means the Connecticut State Apprenticeship Council; and “preapprentice” means a person, student or minor employed under a written agreement with an apprenticeship sponsor for a term of training and employment not exceeding two thousand hours or twenty-four months in duration, and who is registered with the Labor Department.