Missouri Revised Statutes Title XXX. Domestic Relations § 454.518. Lien on law suits, claims or counterclaims, when, procedure--notice, contents--liability of persons making payment or settlement after notice--duties of clerk

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 claims, counterclaims, or suits at law of any obligor delinquent in child or spousal support payments.

2. No such lien shall be effective unless and until a written notice is filed with the clerk of the court in which the claim, counterclaim or suit at law is pending, and the clerk of the court mails the notices required by subsection 5 of this section. 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.

3. Notice of this lien shall not be filed 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 claim, counterclaim or suit at law, after receipt of such notice, as defined in subsection 5 of this section, 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. Upon the filing of a notice pursuant to this section, the clerk of the court shall mail to the obligor and to all attorneys of record a copy of the notice. The obligor and attorneys of record shall be deemed to have received the notice within five days of the mailing by the clerk. The lien described in this section shall attach to any payment or settlement made more than five days after the clerk mailed the notice.

6. 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.