(a) The employees eligible for insurance under the policy shall be all of the employees of the employer, or all of any class or classes thereof determined by conditions pertaining to their employment. The policy may provide that the term "employees" shall include the employees of one or more subsidiary corporations and the employees, individual proprietors and partners of one or more affiliated corporations, proprietors or partnerships if the business of the employer and of such affiliated corporations, proprietors or partnerships is under common control through stock ownership, contract or otherwise. The policy may provide that the term "employees" shall include the individual proprietor or partners if the employer is an individual proprietor or a partnership. The policy may provide that the term "employees" shall include retired employees. No director of a corporate employer shall be eligible for insurance under the policy unless such person is otherwise eligible as a bona fide employee of the corporation by performing services other than the usual duties of a director. No individual proprietor or partner shall be eligible for insurance under the policy unless he is actively engaged in and devotes a substantial part of his time to the conduct of the business of the proprietor or partnership. A policy issued to trustees may provide that the term "employees" shall include the trustees or their employees, or both, if their duties are principally connected with such trusteeship. A policy issued to insure the employees of a public body may provide that the term "employees" shall include elected or appointed officials.
(b) The premium for the policy shall be paid either from the employer's funds or from funds contributed by the insured employees, or both. Except as provided in subdivision (c) of this section, a policy on which no part of the premium is to be derived from funds contributed by the insured employees shall insure all eligible employees, except those who reject coverage in writing.
(c) An insurer may exclude or limit the coverage on any person as to whom evidence of individual insurability is not satisfactory to the insurer.
(d) The policy must cover at least two employees at date of issue.
(e) The amounts of insurance under the policy must be based upon some plan precluding individual selection either by the employees or by the employer or trustees.