This chapter argues that climate adaptation must become part of everyday social work, not as an optional add-on, but as core preventive practice. Social workers are already working inside a changing climate: we see families skipping meals because of food prices, older adults and children struggling in dangerous heat, and housing that cannot cope with floods, storms, or cold. What has not caught up is our practice. Most social work still assumes that crisis is temporary and systems will stabilize. The emerging reality is that instability is becoming normal. Here, I propose “anticipatory social work”: embedding climate adaptation into existing roles across practice areas. The chapter outlines how this can look in early intervention, family and child support, community work, education and schools, mental health and substance use, housing and shelter, and policy advocacy. It also shows how current legal duties around prevention and wellbeing in many countries can be used to justify proactive climate-focused work.