I estimate the effect of uncertainty on risky innovation using a panel of 11,417 manufacturing firms. I find that an increase in uncertainty has a large negative effect on the risky innovation of entrepreneurial firms, while it does not have any significant impact on other firms. This negative effect is stronger for the less diversified entrepreneurial firms in the sample. The estimation results are consistent with the innovation dynamics generated in a model in which entrepreneurs are risk averse and cannot diversify the risk of their business.

We consider a dynamic multifactor model of investment with financing imperfections, adjustment costs and fixed and variable capital. We use the model to derive a test of financing constraints based on a reduced form variable capital equation. Simulation results show that this test correctly identifies financially constrained firms even when the estimation of firms’ investment opportunities is very noisy. In addition, the test is well specified in the presence of both concave and convex adjustment costs of fixed capital. We confirm empirically the validity of this test on a sample of small Italian manufacturing companies.

Firms consider wages, current and expected productivity, as well as firing and hiring costs when firing a worker. Financing constraints distort this intertemporal trade-off, leading firms to sub-optimally fire short-tenured workers with high future expected productivity. We provide empirical evidence of this distortion using matched employer-employee data from the Swedish population between 2000 and 2010. We propose a new empirical strategy that uses credit ratings to identify financing constraints and uses exchange rates and trade data to identify demand shocks. Our empirical results identify an important new misallocation effect of financial frictions that operates within firms across different types of workers.