Various theories suggest the existence of a negative relationship between the use of atypical employment contracts and productivity growth, arguing that firms’ utilisation of atypical contracts may reduce the incentive to innovate and internal training, inducing firms to follow a ‘low-road’ to competitiveness, based upon cost-cutting strategies. This paper aims to provide new evidence on the occurrence of these effects in the Italian economy, where changes in labour legislation from the mid-Nineties onwards, associated with an ‘institutional’ wage moderation period, have brought about a significant process of job creation, but also an appreciable slowdown in labour productivity. This issue is investigated using a microeconomic approach, taking a rich source of microdata for firms and estimating a dynamic model for labour productivity on a pseudo-panel of firms for the period 2003-2008. The results support the hypothesis of a negative impact of external labour flexibility on labour productivity growth at firm level, such effect proving stronger for small and medium than for large enterprises and of varying magnitude for the different atypical contracts.

In this paper, we study a long-run disaggregated model of consumption following an approach based on an integrated cross-section and time-series demand system. The study consists of three steps. First, a cross-section analysis is performed on data from household budget surveys. At this stage, the problem of 'zero expenditures' is solved. The cross-section results are transformed into variables for use in the time-series system of demand. Then, this demand system is built and estimated. Some results for Italy concerning both the cross-section and the time-series analyses are presented.Demand Systems, Cross-SECTION And Time Series Models, Lon-RUN Disaggregated Models,