A Massachusetts Complaint for Modification is a legal document filed in a family court that requests a change in a prior court order regarding matters such as alimony, child support, parenting plans, or division of assets. The Complaint is typically filed by one party in a divorce proceeding, and must include the terms of the original order that is being challenged and the proposed changes. There are two types of Complaints for Modification: Complaint for Modification of Alimony and Complaint for Modification of Child Support. The Complaint must be served to the other party, who must then respond to the Complaint in order for the Court to consider the requested changes.