(a) A policy may provide that, during the period of a work stoppage, each individual premium rate shall be increased by an amount not to exceed 20 percent of the amount shown in the policy, or a greater percentage as approved by the commissioner, to provide sufficient compensation to the insurer to cover increased:
(1) administrative costs; and
(2) mortality and morbidity.
(b) If a policy provides for a premium rate increase in accordance with this section, the amount of an employee's contribution must be increased by the same percentage.