If a spouse violates the terms of a parenting agreement in terms of parenting time, for instance, or holiday time, the party should seek an attorney's advice. The party may be asked, is this consistent? Are they always missing holidays? Is the person interfering with the children's best interest? Are they not getting to school on time? How extensive is it? Is it that the party is 15 minutes late because they're sitting in Chicago traffic and it could not have been avoided, or is it every single weekend? What a spouse, or an ex-spouse, can do is call the police; you file a report and they would have to file a separate action to get criminal contempt proceedings underway.