Why do some countries construct strong systems of social protection, while others leave workers exposed to market forces? In the past three decades, scholars have developed an extensive literature theorizing how hegemonic social democratic parties working in tandem with a closely-allied trade union movement constructed models of welfare capitalism. Indeed, among the most robust findings of the comparative political economy literature is the claim that the more political resources controlled by the left, the more likely a country is to have a generous, universal system of social protection....

Why do some countries construct strong systems of social protection, while others leave workers exposed to market forces? In the past three decades, scholars have developed an extensive literature theorizing how hegemonic social democratic parties working in tandem with a closely-allied trade union movement constructed models of welfare capitalism. Indeed, among the most robust findings of the comparative political economy literature is the claim that the more political resources controlled by the left, the more likely a country is to have a generous, universal system of social protection....