A Massachusetts Complaint For Modification is the legal document used in Massachusetts family law to request a change in the terms of an existing court order. It can be used to seek changes to child support, alimony, custody, or visitation orders. The Complaint can be used to ask for an increase or decrease in the amount of money paid for support, to modify the visitation schedule, or to adjust custody arrangements. There are two types of Massachusetts Complaint For Modification: the Complaint for Modification of Child Support and the Complaint for Modification of Alimony. Both documents must be filled out and filed with the court to begin the process of requesting a modification.