Family support encompasses a wide variety of professionals, sectors, and intervention paradigms that make it difficult to systematize and standardize the skills needed by the family support workforce. The present study aimed to describe the relevant skills of professionals, organize the main skills into different categories, and contribute to the development of intervention standardization guidelines in the field of family support. So, a systematic literature review was conducted following the PRISMA guidelines. The search was carried out in five databases and included the analysis of quantitative, qualitative, and mixed-methods studies, and all studies were qualitatively assessed. Of the initial 3334 articles identified, 59 studies were included, and four categories were identified: professionals’ qualities, essential skills common to all professions and contexts, specific knowledge, and theoretical approaches necessary for family support. Most of the studies were from the United Kingdom, qualitative, published in the last 10 years, used small samples, and included a specific group of professionals. The included studies did not specify whether some skills or characteristics were considered more effective in practice, and they had bias issues related to social desirability. The implications for family support practice are discussed, as well as the gaps to be covered in future studies.

Purpose: Skills used in the practice of family support workforce are implemented in different settings and frameworks. The conceptual assumptions and epistemological frameworks of diversity are a challenge. Various paradigms of intervention, different sectors, and disciplinary involvement indicate the need to systematize and clarify knowledge in the field. Method: Using preferred reporting items for systematic reviews and meta-analyses guidelines, a systematic review was conducted, including qualitative, quantitative, and mixed-method studies on skills in the practice of family support. Results: The literature was collected in an exhaustive search of several databases, where a set of 8,489 papers was selected. The workforce skills described were the qualities of the professionals, technical skills, and specific knowledge. Discussion: Most of the studies were literature reviews, did not define specific skills, had very small samples, and had issues with bias. We discuss implications for practice in social work as well as the gaps to be covered in further research of family support.