Family and marriage are among the most important social institutions that shape the lives of individuals and communities. They influence socialization, emotional development, economic security, identity formation, and social relationships. For social work professionals, understanding the structure, functions, and changing nature of family and marriage is essential because these institutions significantly affect the well-being of individuals across all stages of life. Social workers frequently engage with families facing social, economic, psychological, and legal challenges and therefore require a comprehensive understanding of family dynamics to provide effective interventions. Family serves as the primary agency of socialization where children learn values, norms, customs, responsibilities, and social behavior. Marriage provides the socially accepted framework for forming families and maintaining stable relationships between spouses. Healthy family relationships contribute to emotional security, mental health, and social adjustment, whereas dysfunctional family environments often result in conflict, neglect, abuse, and other social problems. Social workers assess these family conditions to identify risks and strengths before planning suitable interventions. One important implication for social work professionals is family assessment. Social workers must understand family composition, communication patterns, power relations, roles, and support systems. Such assessments help identify the causes of family conflicts, domestic violence, substance abuse, child neglect, elder abuse, or marital discord. Effective assessment enables professionals to design appropriate counselling, rehabilitation, and welfare services. Another implication is counselling and conflict resolution. Marital conflicts, misunderstandings, financial stress, and intergenerational