(a) A political subdivision shall notify the division of the method by which its employees will receive benefits, the approximate number of employees covered, and the estimated amount of payroll.
(b) A political subdivision shall notify its employees of the method by which the employees will receive benefits and the effective date of the coverage. Employees of a political subdivision are conclusively considered to have accepted the compensation provisions instead of common-law or statutory liability or cause of action, if any, for injuries received in the course of employment or death resulting from injuries received in the course of employment.