If your employee has a case open with a local child support agency (LCSA), have them contact our office to report the direct payment. Under state and federal law, employers are required to remit all California child support income withholding payments to the California State Disbursement Unit (SDU). For assistance in redirecting payments from individuals to the State Disbursement Unit (SDU), employers may call the SDU at (866) 901-3212 for assistance.