Globalization has exacerbated the impact of three Northern-driven forces on Central American unions. Transnational firms have restructured or enhanced their levels of subcontracting. Governments, while weakening labor-code implemention, have launched extensive privatization schemes. And international supporters of unions have espoused new priorities and rechanneled funding. Although all three trends have caused major difficulties for unions, this article assesses whether or not their traditional spirit of “social-movement unionism” has been undermined. Based on extensive interviews and primary and secondary data, the study documents union resilience in the banana and maquila sectors despite problematic corporate behavior and market conditions. Stung by state privatizations, unions that fragmented following the Central American Peace Accords have partially regrouped to resist public-health takeovers and labor-code harmonization. Facing losses in Northern funding, unions have painfully adapted to fresh organizing strategies and sensitivity to women's issues, which they found to be fundamental to successful collaboration with corporate campaigns, trade pressure, and NGOs. Despite losses, unions have tapped a broader solidarity in their struggle against the demons of globalization.