Dementia care workforce sustainability sits at a quiet crisis point globally — burnout, turnover, and psychological strain among residential care workers directly erode the quality of life for some of the most vulnerable patients. A large-scale synthesis now maps the architecture of that stress in unprecedented structural detail, with implications for how care facilities and health systems should invest in interventions.

This systematic review drew on 52 studies encompassing 1,121 aged care facilities and 16,372 professional caregivers, spanning nearly three decades of research across CINAHL, PsycINFO, PubMed, and MEDLINE. Using framework synthesis methodology, the authors constructed a Conceptual Ecosystem of Professional Dementia Caregivers' Experience of Occupational Stress — a model portraying occupational stress not as a linear cause-and-effect phenomenon but as an interdependent system. Stress manifests across three dimensions: psychological, physical, and relational. Both chronic, low-grade stressors and acute singular events act as activators, while certain workplace and personal factors function as mediators that either amplify or buffer those stressors. Critically, interventions targeting multiple stress factors simultaneously demonstrated superior effectiveness over single-domain approaches.

This finding challenges a long-standing institutional tendency to deploy isolated solutions — mindfulness programs here, caseload adjustments there — rather than redesigning the care environment systemically. The relational dimension of stress deserves particular attention: dementia's behavioral and communication challenges place caregivers in uniquely ambiguous emotional labor situations that most occupational stress frameworks, built around industrial or office settings, fail to capture adequately. The ecosystem model's emphasis on dependent, interacting factors aligns with complexity science approaches gaining traction in healthcare management.

Key limitations include the observational and cross-sectional nature of many constituent studies, heterogeneous outcome measures across the 52 papers, and a publication window that may underrepresent pandemic-era workforce disruptions. Still, the scale and methodological rigor of this synthesis position it as a meaningful policy-relevant anchor for facilities seeking evidence-based workforce wellbeing strategies.