1.  The persons eligible for insurance shall be all of the employees of the employers or all of the members of the unions or organizations, or all of any class or classes thereof. The policy may provide that the term "employees" includes retired employees, the individual proprietor or partners if an employer is an individual proprietorship or a partnership and directors of a corporate employer. The policy may provide that the term "employees" includes the trustees or their employees, or both, if their duties are principally connected with that trusteeship.  

2.  The premium for the policy shall be paid from funds contributed by the employer or employers of the insured persons or by the union or unions or similar employee organizations, or by both, or from funds contributed by the insured persons or from both the insured persons and the employer or union or similar employee organization. Except as provided in subsection 3, a policy on which no part of the premium is to be derived from funds contributed by the insured persons specifically for their insurance must insure all eligible persons, except those who reject such coverage in writing.  

3.  Except as provided in section 2736‑C, section 2808‑B and chapter 36, an insurer may exclude or limit the coverage on any person as to whom evidence of individual insurability is not satisfactory to the insurer.  

4.