This is Part 2 of my analysis of the way that fundamental ideas in Modern Monetary Theory (MMT) are totally consistent with a reasonable interpretation of Marx’s work. The motivation to clarify these issues came after I spoke at an event last weekend in the UK and shared a panel with a critic who claimed that Marx’s work established that MMT is wrong to assume that unemployment is a monetary phenomenon (insufficient spending) and that government spending can do anything about it. The claim was based on a view that Marx thought that capitalist firms have some unique logic that if they decide not to produce no amount of sales orders will induce them to expand production even if they have massive excess capacity (‘machines lying idle’) and a huge pool of idle labour to draw upon. No reasonable reading of Marx’s work would lead to that conclusion. In this part, we will consider what Marx thought about crisis and some later developments of his reproduction schemes, which make it clear that effective demand drives capitalist output, which conditions their employment decisions.