On the website of Italian Ministry of Labour and Social Policy: http://www.lavoro.gov.it/notizie/Pagine/Distacco-Ue-al-via-la-nuova-procedura-per-la-comunicazione-di-distacco-dei-lavoratori-in-Italia.aspx info was published that, pursuant to Decree No. 136/23016 the delegated employees must be obligatorily reported.
The delegated employees are to be reported online by means of form available on: http://www.lavoro.gov.it/strumenti-e-servizi/Distacco-transnazionale/Pagine/default.aspx.
The details of reporting employees in the cabotage transport sector in Italy were published at: http://www.lavoro.gov.it/documenti-e-norme/normative/Documents/2016/INL-circolare-n3-comunicazione-preventiva-distacco-transnazionale-e-regime-sanzionatorio.pdf, while the general information on delegating employees to work in Italy is on the website: www.distaccoue.lavoro.gov.it .