Ind. Code § 31-16-9-0.3

Sec. 0.3. An employer who makes a deduction from an employee's wages, in accordance with an assignment of wages for the payment of child support ordered by the court before September 1, 1985, under IC 31-1-11.5-13 (before its repeal, now codified in this chapter and at IC 31-16-12), may collect a fee of two dollars ($2) each time the employer makes a deduction. The fee may be deducted by the employer from the employee's wages each time the employer makes the deduction for support.