(1) Payment to 2 or more persons as joint beneficiaries shall be equal unless the participant, employee or annuitant has designated otherwise in the written designation of beneficiary on file with the department.
(2) A beneficiary of a deceased participant, annuitant, alternate payee, beneficiary, or employee may waive absolutely and without right of reconsideration or recovery all or part of any benefit payable under this chapter. The beneficiary shall then be determined as if the waiving beneficiary had died prior to the decedent except that if the person was a beneficiary under group 2 under s. 40.02 (8) (a) 2. , payment shall be made as if at least one child had survived the participant, alternate payee, beneficiary, employee, or annuitant. Unless the department receives the beneficiary's written request to cancel the waiver before the date on which it would otherwise become effective, the waiver shall be effective on the first day of the 2nd month commencing after it is received by the department or the date specified in the waiver, if later. A waiver received after the effective date on which a beneficiary has commenced a monthly annuity under s. 40.73 (2) or (3) shall apply to monthly payments payable after the effective date of the waiver. Payment shall be subject to the restrictions specified in s. 40.73 (2) (b) .
(4) If a participant, employee or annuitant fully terminates all coverage and closes all accounts to which a written beneficiary designation applies, the designation does not apply if the individual again becomes a participant, employee or annuitant.
(5) A designation of a testamentary trust as beneficiary shall satisfy the requirement of s. 40.02 (8) (a) 1. that a person or trust be specifically named in a written designation of beneficiary whether the will establishing the trust is written before or after the designation of beneficiary is received by the department. If, however, a designation specified the date or otherwise identified a specific will, the designation shall not apply if the will is not the last will and testament of the participant, employee or annuitant.