In spite of prevalent views among economists and business management experts in favour of corporate focus development strategies still lack empirical evidence. The concepts of diversification and product refocusing of firms businesses are difficult to express with quantitative indicators, as the...

In this study, we provide an estimation of the average age-productivity profile in the French private sector. The relative productivity of groups of workers is estimated through the relationship between a firms productivity and the age structure of its labour force. We find that productivity...