252H.23  Right to request cost-of-living alteration.
  A parent may request a cost-of-living alteration by submitting all of the following to the unit:
  1.  A written request for a cost-of-living alteration to the support order signed by the parent making the request.
  2.  A statement signed by the nonrequesting parent agreeing to the cost-of-living alteration to the support order.
  3.  A statement signed by each parent waiving that parent’s right to personal service and accepting service by regular mail.
  4.  Other documentation specified by rule of the department.
97 Acts, ch 175, §108