Abstract
By exploiting firm level balance sheet data from the Cerved database and employment data from the INPS database, we provide a detailed description of the productivity performance of Italian industrial districts firms over the 2003–2017 period. The main structural features of industrial districts are first compared with those of the other types of local labour market areas. The performance of district firms is subsequently analyzed both overall and separately for the firms belonging to the core district industry and the remaining companies. We find evidence of a positive and sizeable district productivity premium, increasing over the period of analysis. However, in order to consolidate their performance, industrial districts had to undergo significant structural changes. Medium-sized and large firms have grown in importance. At the same time, structural adaptation involved the acquisition of a more significant role by firms not operating in the main district industry.
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Data availability
The data utilized for the analyses are not publicly available. We refer the interested researchers to the owners of the databases (CERVED and INPS).
Notes
Large establishments here are those with more than 250 employees.
All the 12 large cities are classified by Istat as non-manufacturing oriented LLMAs, with the exception of Bergamo, that is classified as an ID. The latter was also dropped from the analysis for consistency reasons.
Distinct percentiles were computed for each year-sector stratum in the dataset and separately for firms located in IDs and in the remaining LLMAs.
In what follows we denote as IDs the set including both the LLMAs classified by Istat as Industrial distrincts and the LLMAs classified as Large-firm manufacturing oriented systems with district characteristics. The total number of active manufacturing corporations located in IDs and in the reference LLMAs was about 90.000 in 2012, according to Istat’s data, about equally distributed between the two groups. The coverage ratio of our final sample is thus about 60 per cent of the corresponding population.
We chose to restrict the crisis period to the years when the double-dip recession was more marked. Nonetheless, extending the crisis period to include the two turning point years (2008 and 2013) does not alter the empirical findings presented in the paper in a significant way.
Industry-level price indexes at the 5 digit NACE Rev. 2 breakdown level were employed to deflate the nominal value added figures.
While a finer spatial partition, corresponding to the 20 Italian administrative regions, could have been adopted in order to control for geographical unobserved heterogeneity, this choice raises critical identification issues, because the spatial diffusion of IDs in Italy is strongly concentrated in a few regions and in some cases (Veneto, Tuscany and Marche) IDs account for the vast majority of the local manufacturing activity. At the same time, in Valle d’Aosta and in four Southern regions (Basilicata, Calabria, Molise and Sicily) IDs are entirely absent, making the district productivity differential completely unidentified for these areas. Measuring the productivity performance of IDs within individual regions is thus highly questionable for a substantial fraction of our sample, due to the lack of common support between IDs and the reference LLMAs. Consequently, we choose to rely on geographical controls at the macro-region level for our baseline estimates and to refer to regional controls only in the robustness analysis.
Equal to 0.025, as given in Table 10, Model II.
A different map of IDs is utilized, labour productivity is considered instead of TFP, regression results are weighted by employment and firms with less than 5 five employees are included in the sample.
The statistical significance of the changes in the productivity differentials between periods was assessed by running a pooled regression over the entire 2003–2017 period and interacting the district dummies with separate dummies for the crisis and the recovery periods. In this specification, the coefficients of the interaction terms measure the change of the district productivity differential with respect to the level obtained in pre-crisis period and their statistical significance can be assessed by means of the usual t-test statistics. Results are given in Table 4.
We have about 30,000 observations in the reference set in each period.
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Acknowledgements
We would like to thank Antonio Accetturo, Giovanni Iuzzolino, Marcello Pagnini, Luigi Federico Signorini and two anonymous referees for their helpful comments and suggestions. The views expressed are those of the authors and do not necessarily reflect those of the Bank of Italy.
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Di Giacinto, V., Sechi, A. & Tosoni, A. The performance of Italian Industrial districts in and out of the 2008–2012 crisis. J. Ind. Bus. Econ. 50, 815–848 (2023). https://doi.org/10.1007/s40812-023-00272-2
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DOI: https://doi.org/10.1007/s40812-023-00272-2