Section 4353 - Duty to report(a) Notice of changes affecting support.--An individual who is a party to a support proceeding shall notify the domestic relations section, the department and the other parties in writing or by personal appearance within seven days of any material change in circumstances relevant to the level of support or the administration of the support order, including, but not limited to: (1) change of employment; and(2) change of personal address or change of address of any child receiving support.(a.1) Delivery.--In any subsequent child support enforcement action between the parties, upon sufficient showing that due diligence has been made to ascertain the location of a party, the court or the department may deem due process requirements for notice and service of process to be met with respect to the party, upon delivery of written notice to the most recent residential address or employer address filed with the domestic relations section or the department pursuant to subsection (a).(a.2) Notice of location information.--Each party to a support proceeding shall file with the domestic relations section and the department, and update as appropriate, information on the location and identity of the party, including Social Security number, residential and mailing addresses, telephone numbers, driver's license number and name, address and telephone number of employer.(b) Failure to give notice.--Willful failure to comply with this section may be adjudged in contempt of court pursuant to section 4345 (relating to contempt for noncompliance with support order). 1985, Oct. 30, P.L. 264, No. 66, § 1, effective in 90 days. Amended 1988, March 25, P.L. 296, No. 35, § 2, imd. effective; 1997, Dec. 16, P.L. 549, No. 58, § 9, effective 1/1/1998.