Using data for advanced and emerging economies, we show that there is a negative correlation between public debt and corporate investment. Industry-level regressions show that high levels of government debt are particularly damaging for industries that need more external financial resources....

We show that an increase in aggregate uncertainty - measured by stock market volatility - reduces productivity growth more in industries that depend heavily on external finance. The mechanism at play is that during periods of high uncertainty, firms that are credit constrained switch the...