Okla. Stat. tit. 43, § 43-136: Mailing of alimony and support payments - Evidence of

support payments - Income assignment fee.

A. If a judicial order, judgment or decree directs that the

payment of child support, alimony, temporary support or any similar

type of payment be made through the office of the court clerk, then

it shall be the duty of the court to transmit such payments to the

payee by first class United States mail, if requested to do so by

the payee. Such payments shall be mailed to the payee at the

address specified in writing by the payee. In the event of a change

in address of the payee it shall be the duty of the payee to furnish

to the court clerk in writing the new address of the payee.

B. A report of child support payments with a certificate of

authenticity executed by the court clerk is admissible into evidence

in court or in an administrative proceeding as self-authenticated.

C. A fee not to exceed Twenty-five Dollars ($25.00) shall be

charged and collected for any post decree application to initiate an

income assignment in addition to any other fees authorized by law.

The fee shall not be charged or collected for income assignments

requested at the time of the filing of the original petition or

entered at the time of a divorce decree. The person entitled to

support is entitled to collect said fees paid pursuant to this

subsection from the person obligated to pay support through civil

proceedings.