Ohio Rev. Code Ann. § 3119.302
(A) When the court, with respect to a court child support order, or the child support enforcement agency, with respect to an administrative child support order, determines the person or persons responsible for the health care of the children subject to the order pursuant to section 3119.30 of the Revised Code, all of the following apply:
(2) If the contributing cost of private family health insurance to either parent exceeds five per cent of that parent's annual gross income, that parent shall not be ordered to provide private health insurance for the child except as follows: