(a) be at least 18 years of age;

(b) not have a physical or mental condition that would prevent them from properly performing the essential functions of the certified occupation, or any restricted or limited performance of the occupation, in accordance with a restricted or limited used certification;

(c) have not less than one year of necessary experience in the certified occupation certificate sought, unless another minimum experience period is otherwise required by law or regulation; and

(d) successfully complete training acceptable to the commissioner for occupations whose subparts require training.