A Complaint for Contempt addresses non-compliance with a court order. That includes not only filing Judgments but also Temporary Orders. Most of the Contempt actions are civil in nature. It is used when a party seeks to enforce a court order or judgment.
If either party violates a court order that may be considered a contempt of court but there is more of an analysis. There can be issues about failure to pay alimony, spousal support, child support, failure to fulfill or deny visitation, refusing to pay expenses such as mortgage, car insurance and the like and other violations of court orders.
