No person who is declared, under any provision of the general statutes or the regulations of Connecticut state agencies, to be an unsuitable person to hold a permit to sell alcoholic liquor shall be allowed to have a financial interest in any business that is permitted to sell alcoholic liquor under any provision of the general statutes or the regulations of Connecticut state agencies. Except as provided in section 30-90a, no minor shall be employed in handling any alcoholic liquor upon, delivering any alcoholic liquor to or carrying or conveying any alcoholic liquor from any permit premises.