CA Fam Code Section 4721

(a)

This chapter applies only to installments of child support that are due on or after January 1, 1992.

(b)

It is the intent of the Legislature that the penalties provided under this chapter shall be applied in egregious instances of noncompliance with child support orders.

(c)

It is the intent of the Legislature that for the purposes of this chapter, payments made through wage assignments are considered timely regardless of the date of receipt by the local child support agency or obligee.