(A) A group meeting all the requirements for group rating shall be considered as a single employing entity for purposes of group experience rating. The eligibility of data for use in the group shall be the same as the eligibility of data for use in the individual employer's rate calculation. Credibility limits and all factors based upon credibility will apply at the group level. For catastrophe claims, the definition of a catastrophe under paragraph (A) of rule 4123-17-12 of the Administrative Code must be satisfied by an individual employer in the group to be eligible for catastrophe claim cost relief, although more than one individual employer in the group may qualify for catastrophe relief from the same catastrophe occurrence. Handicap charges to surplus shall be applied at the group level.
(B) All operations or manuals of a risk electing group rating are subject to group experience rating.
(C) Effective July 1, 2002, except with respect to mergers or transfers of the operations of a business, an employer's experience may be combined once during a policy year to create an experience modification for multiple employers grouped together for experience rating purposes.
(D) Employers participating in a group rating plan may implement the drug free workplace program.
(E) An employer that is in a cancelled coverage status for at least one full rating year as of the date that the experience modification of a group of which it had been a member is recalculated, will not be liable for any obligation nor will such employer receive the benefit of any credit associated the recalculation.