If such a participant resumes service as a judge, he or she shall receive credit for any additional service. Upon subsequent retirement, his or her retirement annuity shall be the amount previously granted, plus the amount earned by the additional judicial service under the provisions in effect during the period of such additional service. However, if the participant was receiving the maximum rate of annuity at the time of re-employment, he or she may elect, in a written direction filed with the board, not to receive any additional service credit during the period of re-employment. In such case, contributions shall not be required during the period of re-employment. Any such election shall be irrevocable.
40 ILCS 5/18-127