Maryland Statutes
Part III - Child and Spousal Support -- Earnings Withholding
Section 10-132 - Change of Obligor's Address or Place of Employment

If the address or place of employment of the obligor changes, the obligor, within 10 days after moving to a new address or receiving the first earnings from a new employer, shall send the change of address or new place of employment to:
        (1)    the court:
            (i)    by certified mail, return receipt requested; or
            (ii)    by filing in person at the court and obtaining proof of filing; and
        (2)    (i)    if the recipient receives the support payments, the recipient, by first–class mail; or
            (ii)    if the support enforcement agency receives the support payments, the support enforcement agency:
                1.    by certified mail, return receipt requested;
                2.    if the agency’s website allows parents to update address and employment information, by entering the new address or place of employment on–line;
                3.    by filing in person at the agency and obtaining proof of filing; or
                4.    by telephone or electronic communication to the agency and obtaining proof of change.