With the concubine contract, couples might also wish to create powers in the health sector so that each can make decisions about the other`s health care in the event of incapacity for work. If you are in a long-term same-sex relationship, a concubine agreement can ensure that your rights are protected throughout your relationship and beyond. The lawyers at Gimbel, Reilly, Guerin & Brown, LLP can help you draft an agreement that meets your needs. Contact a family law attorney in Milwaukee at 414-271-1440. If the partners share a child or a child, a cohabitation contract cannot fix the amount or waive family allowances. Child support is determined by law. If there have been or are problems of domestic violence in the relationship of the partners, a concubine agreement would not be appropriate and, in the event of separation, most likely unenforceable. Common law marriage was abolished in Wisconsin in 1917. .