Child welfare practice involves competing and often contradictory demands that position frontline workers at the intersection of legislative requirements, organizational accountability, and relational engagement with families. This article reports findings from a constructivist grounded theory study conducted in the Canadian province of Newfoundland and Labrador, examining how frontline child welfare social workers experience and manage these demands in everyday practice. Drawing on in-depth interviews with eighteen practitioners, the study introduces the Tri-Sphere Model, an empirically grounded analytic model that conceptualizes competing demands as enduring structural conditions produced through interaction among the formal child welfare system, professional values and theories, and service recipients’ lived realities. Findings show that workers routinely encounter patterned misalignments, experienced as disconnects, inconsistencies, and conflicts that generate tension, uncertainty, and emotional strain. Participants responded through adaptive strategies, including policy adherence for defensibility, navigating policy boundaries to align institutional requirements with family contexts, and negotiating shared solutions with supervisors and families. By centering frontline perspectives, the study highlights adaptive professionalism as a necessary ethical response to structural constraint and identifies implications for policy, professional education, and organizational support in child welfare systems.