39.1. Unless specific reference to such an employee is made in a government regulation, this division does not apply to an employee hired to work on a farm operated(1) by a natural person, alone or with his consort or a descendant or ascendant of either, with the habitual assistance of not more than three employees;
(2) by a legal person as its principal activity, with the habitual assistance of not more than three employees in addition to the three principal shareholders of the legal person if they work there;
(3) by a partnership or by natural persons acting as co-owners, with the habitual assistance of not more than three employees.