(a) Regardless of the rating plans adopted by any rating organization, the plan shall provide a rating structure with differing rate tiers for insureds too small to qualify for experience rating and for insureds large enough to be experience rated; and
(b) The plan shall seek and be entitled to receive approval for all classification exceptions approved by the director for any insurer.
(2) If any insurer issuing workers’ compensation insurance policies under this chapter refuses to accept its equitable apportionment under such plan, the director shall revoke the insurer’s authority to issue workers’ compensation insurance policies. [1965 c.285 §94a; 1979 c.673 §2; 1990 c.1 §2; 2007 c.241 §18]