Why do we see large-scale labor protests and strikes under some IMF programs such as in Greece in 2010 and not in others such as in Ireland in the same year? This Element argues that extensive labor market reform conditions in an immobile labor market generate strong opposition to programs. Labor market reform conditions that decentralize and open up an immobile labor market cause workers either to lose in terms of rights and benefits, while being stuck in the same job or to fall into a less protected sector with fewer benefits. Conversely, in more mobile labor markets, wage and benefit differentials are low, and movement across sectors is easier. In such markets, labor groups do not mobilize to the same extent to block programs. The author tests this theory in a global sample and explores the causal mechanism in four case studies on Greece, Ireland, Latvia, and Portugal.