ABSTRACT: In the aim to investigate the behaviour of some indicators for the industrial conflict and to detect the relation between such variables and the cost of labour in Italy, this paper suggests the use of Box‐Jenkins’time series analysis. By fitting a different stochastic process for each series, it can be shown that every indicator gives a different kind of information about the industrial conflict, so that they can't be indifferently substituted by each other. In a second step, cross correlation function estimates between cost of labour and each indicator suggest the different role played by 'strike frequency’and strike duration during any contract renewal.
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