Extending prior HCI and CSCW research on invisible challenges that domestic care workers face, we examine how childcare workers, particularly nannies, experience and manage workplace risks. Drawing on interviews with 21 full-time nannies, we identified three interrelated risks—physical, emotional, and financial—arising from structural and relational constraints in employers’ homes. Through the lens of risk work, we show how these multi-dimensional constraints create tensions that hinder nannies' direct risk mitigation strategies. This often compels them to prioritize indirect risk management to avoid tensions, leaving risks themselves unresolved. We underscore that these practices consequently leave risks and tensions invisible. Our study highlights the need for sociotechnical interventions that support both direct and indirect strategies while addressing the underlying constraints through enhanced public awareness, thereby making domestic childcare workers’ workplace risks more visible and better understood.