Redistribution does not appear to hinder economic growth:
Treating Inequality with Redistribution: Is the Cure Worse than the Disease?, by Jonathan D. Ostry and Andrew Berg: Rising income inequality looms high on the global policy agenda, reflecting not only fears of its pernicious social and political effects, (including questions about the consistency of extreme inequality with democratic governance), but also the economic implications. While positive incentives are surely needed to reward work and innovation, excessive inequality is likely to undercut growth, for example by undermining access to health and education, causing investment-reducing political and economic instability, and thwarting the social consensus required to adjust in the face of major shocks.
Understandably, economists have been trying to understand better the links between rising inequality and the fragility of economic growth. Recent narratives include how inequality intensified the leverage and financial cycle, sowing the seeds of crisis; or how political-economy factors, especially the influence of the rich, allowed financial excess to balloon ahead of the crisis.
But what is the role of policy, and in particular fiscal redistribution to bring about greater equality? Conventional wisdom would seem to suggest that redistribution would in itself be bad for growth but, conceivably, by engendering greater equality, might help growth. Looking at past experience, we find scant evidence that typical efforts to redistribute have on average had an adverse effect on growth. And faster and more durable growth seems to have followed the associated reduction in inequality. ...
To put it simply, we find little evidence of a “big tradeoff” between redistribution and growth. Inaction in the face of high inequality thus seems unlikely to be warranted in many cases.