show positive effects on sales, labor productivity and employment; the effects on exports are less clear. … the effects of different types of innovation on four measures of firm performance, viz. sales, labor productivity …, employment and exports. The econometric approach addresses the problems of unobserved firm heterogeneity as well as the potential …

product diversification and the stability of sales and employment. We find that contrary to portfolio theoretic considerations … more diversified firms exhibit a higher variability of sales and employment. However, the effects are negligibly small from …

into different components. We find that the firm-specific component contributes substantially to aggregate sales volatility … heterogeneous firms selling to multiple markets to motivate a theoretically-founded decomposition of firms' annual sales growth rate …

into different components. We find that the firm-specific component contributes substantially to aggregate sales volatility … heterogeneous firms selling to multiple markets to motivate a theoretically-founded decomposition of firms' annual sales growth rate …