IT‐Based Technical Change and Job Instability

We investigate the impact of IT diffusion on the stability of employment. We document the evolution of different components of job instability over a panel of 348 cities in France, from the mid‐1970s to the early 2000s. The evidence goes against the view that the diffusion of IT has spurred job instability. Yet, analysing long‐term differences in the occupational structure, we find that IT diffusion has increased the share of high‐skill occupations at the expense of low‐skill occupations. This is consistent with French firms' reliance on their internal labour market to meet the new skill requirements associated with IT diffusion.