454.519.  Lien on rights of action for personal injury or negligence, when, procedure — notice, contents — liability of persons making payment or settlement after notice. — 1.  The director, IV-D agency or the obligee may cause a lien for unpaid and delinquent child or spousal support to be placed upon any and all demands or rights of action for negligence or personal injury which any obligor delinquent in child or spousal support payments may have.

  2.  No such lien shall be effective unless and until a written notice is mailed by certified mail, return receipt requested, to the alleged tort-feasor or the attorney of record, if any.  The notice shall contain the name and address of the delinquent obligor, the Social Security number of the obligor, if known, the name of the obligee, and the amount of delinquent child or spousal support.  The notice shall also instruct the tort-feasor to mail a copy of the notice of lien to the tort-feasor's insurance carrier, if any.

  3.  Notice of this lien shall not be mailed unless the delinquent child or spousal support obligation exceeds one hundred dollars.

  4.  Any person or persons, firm or firms, corporation or corporations, including an insurance carrier, making any payment or settlement in full or partial satisfaction of the demand or right of action, after receipt by the tort-feasor of the notice of lien, shall be liable to the obligee or, if support has been assigned pursuant to subsection 2 of section 208.040, to the state or IV-D agency in an amount equal to the lesser of the payment or settlement, or the delinquent child or spousal support.  In such event, the lien may be enforced by a suit at law against any person or persons, firm or firms, corporation or corporations making the payment or settlement.

  5.  In cases which are not IV-D cases to cause a lien pursuant to the provisions of this section the obligee or the obligee's attorney shall file notice of the lien with the lienholder or payor.  This notice shall have attached a certified copy of the court order with all modifications and a sworn statement by the obligee or a certified statement from the court attesting to or certifying the amount of arrearages.