(1) Every member or subscriber to a rating organization shall, as to workers' compensation or employer's liability insurance, adhere to the filings made on its behalf by such organization; except that any such insurer may make written application to the department for permission to file a uniform percentage decrease or increase to be applied to the premiums produced by the rating system so filed for a kind of insurance, for a class of insurance which is found by the department to be a proper rating unit for the application of such uniform percentage decrease or increase, or for a subdivision of workers' compensation or employer's liability insurance:

(a) Comprised of a group of manual classifications which is treated as a separate unit for ratemaking purposes; or

(b) For which separate expense provisions are included in the filings of the rating organization. Such application shall specify the basis for the modification and shall be accompanied by the data upon which the applicant relies. A copy of the application and data shall be sent simultaneously to the rating organization.

(2) Every member or subscriber to a rating organization may, as to workers' compensation and employer's liability insurance, file a plan or plans to use deviations that vary according to factors present in each insured's individual risk. The insurer that files for the deviations provided in this subsection shall file the qualifications for the plans, schedules of rating factors, and the maximum deviation factors which shall be subject to the approval of the department pursuant to s. 627.091. The actual deviation which shall be used for each insured that qualifies under this subsection may not exceed the maximum filed deviation under that plan and shall be based on the merits of each insured's individual risk as determined by using schedules of rating factors which shall be applied uniformly. Insurers shall maintain statistical data in accordance with the schedule of rating factors. Such data shall be available to support the continued use of such varying deviations.

(3) In considering the application for permission to file the deviation, the department shall give consideration to the applicable principles for ratemaking as set forth in ss. 627.062 and 627.072. The department shall approve the deviation if it finds it to be justified. It shall disapprove the deviation if it finds that the resulting premiums would be excessive, inadequate, or unfairly discriminatory. The insurer may not use a deviation unless the deviation is specifically approved by the department.

(4) Each deviation permitted to be filed shall be effective for a period of 1 year unless terminated, extended, or modified with the approval of the department. If at any time after a deviation has been approved the department finds that the deviation no longer meets the requirements of this code, it shall notify the insurer in what respects it finds that the deviation fails to meet such requirements and specify when, within a reasonable period thereafter, the deviation shall be deemed no longer effective. The notice shall not affect any insurance contract or policy made or issued prior to the expiration of the period set forth in the notice. History: s. 431, ch. 59-205; s. 12, ch. 67-9; ss. 13, 35, ch. 69-106; s. 3, ch. 76-168; s. 1, ch. 77-457; s. 21, ch. 78-95; s. 103, ch. 79-40; ss. 2, 3, ch. 81-318; ss. 357, 806, ch. 82-243; s. 49, ch. 82-386; ss. 6, 9, 10, ch. 87-124; s. 17, ch. 90-249; s. 7, ch. 90-366; s. 4, ch. 91-429.