Globalisation poses profound challenges to sector-specific public policies and specialized human services professions because it is associated with co-occurring human needs and multi-faceted, place-based challenges. Innovative collective action strategies are needed, including social networks, formal groups and teams, both single-issue and multi-sector organisational partnerships, and policy bridging and integration mechanisms. Psychologists grounded in social-ecological psychology and related specializations (e.g., community psychology, cultural psychology) can be prepared to provide leadership in service of beneficial social change, while pioneering improvements in their own academic discipline.