For the purposes of the calculation of retirement benefits, in the event that any judge of the administrative adjudication court or any judge of the administrative adjudication court who has been reassigned to the traffic tribunal by this chapter participates or acquiesces in a state shutdown or in a reduced salary or salary deferral plan consistent with any plan imposed upon or agreed to by other state employees, his or her annual salary shall be calculated as if she or he had not participated or acquiesced in any shutdown or plan.