Engagement of family members is significant for improvement of quality and outcomes of family support and contributes family members to feeling respected, supported, and strengthened. The aim of this article is identification and analysis of factors that contribute engagement of family members and professionals in social welfare in achieving positive changes. The article is based on results of content analysis of relevant scientific and expert literature in this area. In this article, it is indicated on significance of family members engagement. Different theoretical approaches and previous research on factors that could influence provide and maintenance of active engagement of family members in achieving positive change are pointed out as well. It is pointed out the importance of having certain skills of professional workers for the engagement of family members during the provision of support to the family. It is shown that engagement of family members is influenced by family factors, individual characteristics, and needs of family members, so as possession of certain characteristics and skills by professionals for family support. The conclusion is that engagement of family members should be recognized as an integral part of family support in social welfare and that is important to create stimulative conditions for continuous development of skills for engagement of family members with professionals in order to improve quality of family support.