The Wohlverhaltensklausel in accordance with § 145b ABGBThe Wohlverhaltensklausel, in accordance with § 145b ABGB, has been introduced with the KindRÄG 2001 and is an example, that government is responding to the changing social structures and their impact on children in family life. The development process and the occurrence of the Wohlverhaltensklausel are shown at the beginning. The work questions, whether the Wohlverhaltensklausel is an efficient legal institution to achieve the goal of the reform, the protection of the welfare of children in all legal matters.Input is the content of the Wohlverhaltensklausel defined, based on the facts of § 145b. Subsequently, the legal consequences of a violation of § 145b ae described. For this, the application areas of the Wohlverhaltensklausel will treated individually. These are the child custody, visitation rights and the rights of information and expression. The link is made by means of examples taken from the jurisdiction. Another chapter in the work is devoted a new development of case law, namely the award of damages as a result of a violation of § 145b.