In this subdivision—
"associated person" , of an investigator, means any of the following—
(a) if the investigator is a corporation—the corporation’s chief executive, secretary or directors;
(b) the investigator’s employees or partners who are individuals;
(c) a person who is an agent of, or contractor for, the investigator, and engaged in writing for the investigator’s authority;
(d) employees of an agent or contractor mentioned in paragraph (c) ;
(e) if a person mentioned in paragraph (c) is a corporation—the corporation’s chief executive, secretary, directors or employees.